Composition

Abstract

The present invention relates to compositions containing luminescent moieties; and a method for manufacturing the composition.

Description

Field of the Invention

[0001] The present invention relates to a composition containing a light-emitting part; a method for preparing the composition; uses of the composition; a method for forming a layer; a layer; a color conversion device; and an optical device. Background Art

[0002] WO 2021 / 116139 A1 discloses QD inks containing QD and a monomer mixture (such as HDDMA and LA).

[0003] Patent Literature

[0004] 1. WO 2021 / 116139 A1

[0005] Non-Patent Literature

[0006] No literature Summary of the Invention

[0008] However, the inventors have recently found that there are still one or more significant problems that are desired to be improved, as listed below;

[0009] The composition containing a light-emitting part has no color change under air conditions, improved thermal stability of the obtained layer (film), improved thermal stability of the light-emitting part in the layer (film), improved dispersibility of the light-emitting part in the composition, phase separation of the light-emitting part and the matrix material can be achieved after curing, improved haze value of the cured film (cured composition), improved dispersibility of the light-emitting part in the obtained layer, improved long-term quantum yield (QY) stability of the light-emitting part in the composition during longer-term storage with or without external light radiation, improved long-term external quantum efficiency (EQE) stability of the light-emitting part in the composition during longer-term storage with or without external light radiation, improved long-term quantum yield (QY) stability of the light-emitting part in the obtained layer (film) during longer-term storage with or without external light radiation, improved long-term external quantum efficiency (EQE) stability of the light-emitting part in the obtained layer (film) during longer-term storage with or without external light radiation, improved good compatibility between the light-emitting part and the matrix material in the composition and / or the obtained layer (film), and / or easy handling of the composition containing a light-emitting part and a matrix material, making the composition suitable for inkjet printing.

[0010] The inventors aim to solve one or more of the above problems.

[0011] The inventors of the present invention surprisingly found that one or more of the above-described technical problems can be solved by the features defined in the claims.

[0012] That is, a novel composition has been discovered, preferably a photocurable composition, which comprises at least;

[0013] i) a light-emitting part, preferably semiconductor light-emitting nanoparticles,

[0014] ii) at least one reactive monomer or a mixture of two or more reactive monomers, preferably the monomer has one or more functional groups, more preferably it is a (meth)acrylate monomer; and

[0015] iii) a chemical compound represented by the following chemical formula (X a )

[0016]

[0017] wherein

[0018] R xa1 、R xa2 、R xa3 、R xa4 are each independently selected from straight-chain alkyl groups having 1-25 carbon atoms, preferably 1 to 15 carbon atoms; branched or cyclic alkyl groups having 3-25 carbon atoms, preferably 3-15 carbon atoms; straight-chain alkenyl or alkynyl groups having 2 to 25 carbon atoms, preferably 2 to 15 carbon atoms; branched alkenyl or alkynyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; aromatic or heteroaromatic ring systems having 5 to 25 aromatic ring atoms, preferably 5 to 15 aromatic ring atoms; each of which may be substituted by one or more groups R a ;

[0019] R a is the same or different each time it appears and is H, D, a straight-chain alkyl or alkoxy group having 1 to 40 carbon atoms, preferably 1 to 25 carbon atoms, more preferably 1 to 15 carbon atoms; a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, preferably 3 to 25 carbon atoms, more preferably 3 to 15 carbon atoms; a straight-chain alkenyl or alkynyl group having 2 to 40 carbon atoms, preferably 2 to 24 carbon atoms, more preferably 2 to 12 carbon atoms; a branched alkenyl or alkynyl group having 3 to 40 carbon atoms, preferably 3 to 24 carbon atoms, more preferably 3 to 12 carbon atoms; an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, preferably 5 to 25 aromatic ring atoms, more preferably 5 to 18 aromatic ring atoms, wherein in each of the above groups, one or more H atoms may be replaced by D, F, Cl, Br, I, and wherein two or more adjacent substituents R a may optionally form a monocyclic or polycyclic aliphatic ring system with each other;

[0020] Z xa is N, P or As, preferably it is N or P, more preferably N;

[0021] Y xa- is a monovalent anion containing halogen, preferably it is selected from the group consisting of F - , Cl - , Br - , I - , At - , Ts - , BF 4- , PF 6- and the group consisting of, more preferably it is F - , Cl - , Br - , I - , BF 4- , PF 6- , even more preferably it is Br - , F - , Cl - , still preferably it is Br - .

[0022] On the other hand, the present invention further relates to a method for preparing the composition according to any one of the foregoing claims, which at least includes the following steps,

[0023] (a) Mixing a light-emitting part, at least one reactive monomer or a mixture of two or more reactive monomers with a chemical compound represented by the following chemical formula (X a ) to form a composition.

[0024]

[0025] wherein the symbols R xa1 , R xa2 , R xa3 , R xa4 , Z xa , Y xa- are as defined in this specification.

[0026] Optionally, a chemical compound containing thiol and / or a chemical compound as defined in this specification is added in step (a).

[0027] On the other hand, the present invention relates to a composition obtainable or obtained by the method of the present invention.

[0028] On the other hand, the present invention relates to the use of the composition in an electronic device, an optical device, a sensing device or a biomedical device.

[0029] On the other hand, the present invention relates to a method for forming a layer, which includes:

[0030] S1) Provide the composition of the present invention onto a substrate, preferably by inkjet;

[0031] S2) Cure the composition, preferably the curing is photocuring, thermal curing or a combination of photocuring and thermal curing carried out by light radiation.

[0032] In another aspect, the present invention further relates to a layer obtained or obtainable by the method of the present invention.

[0033] In another aspect, the present invention further relates to a layer comprising at least, consisting essentially of or consisting of the following;

[0034] Xi) A light-emitting part, preferably which is a semiconductor light-emitting nanoparticle;

[0035] Xii) A polymer made from at least one reactive monomer or a mixture of two or more reactive monomers, preferably the monomer has one or more functional groups, more preferably it is a (meth)acrylate monomer;

[0036] Xiii) A chemical compound represented by the following chemical formula (X a )

[0037]

[0038] Wherein the symbols R xa1 , R xa2 , R xa3 , R xa4 , Z xa , Y xa- Are as defined in this specification.

[0039] In another aspect, the present invention further relates to a color conversion device (100) comprising at least a first pixel (161) and a dam (150), the first pixel being partially or completely filled with a layer of the present invention comprising at least a matrix material (120), the matrix material containing a light-emitting part (110), the dam comprising at least a polymer material, preferably the color conversion device (100) further comprises a support medium (170).

[0040] In another aspect, the present invention further relates to an optical device (300) comprising at least one functional medium (320, 420, 520) configured to modulate light or configured to emit light and a layer of the present invention or 22 or the color conversion device (100) of the present invention. Description of the Drawings

[0041] Figure 1 ： A cross-sectional view of a schematic diagram showing an embodiment of a color conversion film (100).

[0042] Figure 2 ： Top view of a schematic diagram showing another embodiment of the color conversion film (100) of the present invention.

[0043] Figure 3 ： Cross-sectional view of a schematic diagram showing an embodiment of the optical device (300) of the present invention.

[0044] Figure 4 ： Cross-sectional view of a schematic diagram showing another embodiment of the optical device (300) of the present invention.

[0045] Figure 5 ： Cross-sectional view of a schematic diagram showing another embodiment of the optical device (300) of the present invention.

[0046] Figure 1 List of reference signs in

[0047] 100. Color conversion device

[0048] 110. Light-emitting part

[0049] 110R. Light-emitting part (red)

[0050] 110G. Light-emitting part (green)

[0051] 120. Matrix material

[0052] 130. Light-scattering particles (optional)

[0053] 140. Colorant (optional)

[0054] 140R. Colorant (red) (optional)

[0055] 140G. Colorant (green) (optional)

[0056] 140B. Colorant (blue) (optional)

[0057] 150. Dam

[0058] 161. First pixel

[0059] 162. Second pixel

[0060] 163. Third pixel

[0061] 170. Support medium (substrate) (optional) Figure 2 List of reference signs

[0062] 200. Color conversion film

[0063] 210R. Pixel (red)

[0064] 210G. Pixel (green)

[0065] 210B. Pixel (blue)

[0066] 220. Dike

[0067] Figure 3 List of the reference signs in

[0068] 300. Optical device

[0069] 100. Color conversion device

[0070] 110. Light emitting part

[0071] 110R. Light emitting part (red)

[0072] 110G. Light emitting part (green)

[0073] 120. Matrix material

[0074] 130. Light scattering particles (optional)

[0075] 140. Colorant (optional)

[0076] 140R. Colorant (red) (optional)

[0077] 140G. Colorant (green) (optional)

[0078] 140B. Colorant (blue) (optional)

[0079] 150. Dike

[0080] 310. Substrate

[0081] 320. Light modulator

[0082] 321. Polarizer

[0083] 322. Electrode

[0084] 323. Liquid crystal layer

[0085] 330. Light source

[0086] 331. LED light source

[0087] 332. Light guide plate (optional)

[0088] 333. Light emission from light source (330) Figure 4 List of reference signs in

[0089] 400. Optical device

[0090] 100. Color conversion device

[0091] 110. Light emitting part

[0092] 110R. Light-emitting part (red)

[0093] 110G. Light-emitting part (green)

[0094] 120. Matrix material

[0095] 130. Light-scattering particles (optional)

[0096] 140. Colorant (optional)

[0097] 140R. Colorant (red) (optional)

[0098] 140G. Colorant (green) (optional)

[0099] 140B. Colorant (blue) (optional)

[0100] 150. Dam

[0101] 410. Substrate

[0102] 420. Light modulator

[0103] 421. Polarizer

[0104] 422. Electrode

[0105] 423. Liquid crystal layer

[0106] 430. Light source

[0107] 431. LED light source

[0108] 432. Light guide plate (optional)

[0109] 440. Color filter

[0110] 433. Light emission from light source (330)

[0111] Figure 5 List of reference signs in

[0112] 500. Optical device

[0113] 100. Color conversion device

[0114] 110. Light-emitting part

[0115] 110R. Light-emitting part (red)

[0116] 110G. Light-emitting part (green)

[0117] 120. Matrix material

[0118] 130. Light-scattering particles (optional)

[0119] 140. Colorant (optional)

[0120] 140R. Colorant (red) (optional)

[0121] 140G. Colorant (green) (optional)

[0122] 140B. Colorant (blue) (optional)

[0123] 150. Dam

[0124] 510. Substrate

[0125] 520. Light-emitting device (e.g., OLED)

[0126] 521. TFT

[0127] 522. Electrode (anode)

[0128] 523. Substrate

[0129] 524. Electrode (cathode)

[0130] 525. Light-emitting layer (e.g., one or more OLED layers)

[0131] 526. Light emission from the light-emitting device (520)

[0132] 530. Optical layer (e.g., polarizer) (optional)

[0133] 540. Color filter Detailed Description of the Invention

[0135] According to the present invention, the composition, preferably a photocurable composition, comprises at least, consists essentially of, or consists of the following;

[0136] i) A light-emitting part, preferably semiconductor light-emitting nanoparticles,

[0137] ii) At least one reactive monomer or a mixture of two or more reactive monomers, preferably the monomer has one or more functional groups, more preferably it is a (meth)acrylate monomer; and

[0138] iii) A chemical compound represented by the following chemical formula (X a )

[0139]

[0140] Wherein

[0141] R xa1 、R xa2 、R xa3 、Rxa4 Each independently of the others is selected from straight-chain alkyl groups having 1 to 25 carbon atoms, preferably 1 to 15 carbon atoms; branched or cyclic alkyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; straight-chain alkenyl or alkynyl groups having 2 to 25 carbon atoms, preferably 2 to 15 carbon atoms; branched alkenyl or alkynyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; aromatic or heteroaromatic ring systems having 5 to 25 aromatic ring atoms, preferably 5 to 15 aromatic ring atoms; where each may be substituted by one or more groups R a substituted,

[0142] R a which, in each occurrence, is the same or different and is H, D, a straight-chain alkyl or alkoxy group having 1 to 40 carbon atoms, preferably 1 to 25 carbon atoms, more preferably 1 to 15 carbon atoms; a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, preferably 3 to 25 carbon atoms, more preferably 3 to 15 carbon atoms; a straight-chain alkenyl or alkynyl group having 2 to 40 carbon atoms, preferably 2 to 24 carbon atoms, more preferably 2 to 12 carbon atoms; a branched alkenyl or alkynyl group having 3 to 40 carbon atoms, preferably 3 to 24 carbon atoms, more preferably 3 to 12 carbon atoms; an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, preferably 5 to 25 aromatic ring atoms, more preferably 5 to 18 aromatic ring atoms, where in each of the above groups, one or more H atoms may be replaced by D, F, Cl, Br, I, and where two or more adjacent substituents R a may optionally form a monocyclic or polycyclic aliphatic ring system with each other;

[0143] Z xa is N, P or As, preferably it is N or P, more preferably N;

[0144] Y xa- is a monovalent anion containing a halogen, preferably it is selected from the group consisting of F - 、Cl - 、Br - 、I - 、At - 、Ts - 、BF 4- 、PF 6- ; more preferably it is F - 、Cl - 、Br - 、I - 、BF 4- 、PF 6- ; even more preferably it is Br - 、F - 、Cl -, and also preferably it is Br - .

[0145] - a chemical compound of formula (X a )

[0146] According to the present invention, the composition comprises a chemical compound represented by the following chemical formula (X a ) as indicated above. As the chemical compound of formula (X a ), publicly available chemical compounds (quaternary salts containing halogens) can be used.

[0147] It is considered that the chemical compound of formula (X a ) reduces / prevents color change of the composition and / or reduces / prevents sedimentation of the light-emitting part.

[0148] In a preferred embodiment of the present invention, from the viewpoint of reducing / preventing color change of the composition and / or reducing / preventing sedimentation of the light-emitting part, R a , R xa1 , R xa2 , R xa3 , R xa4 of the chemical formula (X a ) are each independently selected from straight-chain alkyl groups having 1-25 carbon atoms, preferably 1 to 15 carbon atoms; branched-chain or cyclic alkyl groups having 3-25 carbon atoms, preferably 3-15 carbon atoms; straight-chain alkenyl or alkynyl groups having 2 to 25 carbon atoms, preferably 2 to 15 carbon atoms; branched-chain alkenyl or alkynyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; each of which may be substituted by one or more groups R a , more preferably R xa1 , R xa2 , R xa3 , R xa4 are each independently selected from straight-chain alkyl groups having 1-25 carbon atoms, preferably 1 to 15 carbon atoms; branched-chain alkyl groups having 3-25 carbon atoms, preferably 3-15 carbon atoms; each of which may be substituted by one or more groups R a ;

[0149] Z xa is N, P or As, preferably it is N or P, more preferably N;

[0150] Y xa- is a monovalent anion containing a halogen, preferably it is selected from the group consisting of F - , Cl - , Br - , I - , At - , Ts - , BF 4- , PF 6-A group, more preferably it is F - , Cl - , Br - , I - , BF 4- , PF 6- , and even more preferably it is Br - , F - , Cl - , and still preferably it is Br - .

[0151] In addition, from the viewpoint of reducing / preventing color change of the composition and / or reducing / preventing sedimentation of the light-emitting part, preferably, based on the total amount of the composition in the absence of a solvent, the total amount of the chemical compound of the chemical formula (X a ) is in the range of 0.001 wt% to 2.0 wt%, preferably it is in the range of 0.01 wt% to 1.9 wt%, more preferably 0.02 wt% to 1.8 wt%, even more preferably 0.03 wt% to 1.6 wt%, still preferably 0.04 wt% to 1.4 wt%.

[0152] According to the present invention, the chemical compound of the chemical formula (X a ) can be added to the composition only as an additive, and it can be introduced onto the surface of the light-emitting part (such as QD) as a ligand material by a known ligand exchange method.

[0153] As the chemical compound of the chemical formula (X a ), any known quaternary salt material containing a halogen group falling under the definition of the chemical formula (X a ) can be used.

[0154] For example, ammonium bromide, ammonium fluoride, ammonium chloride, ammonium iodide, other ammonium salts having a halide ion, such as those disclosed in the manual of quaternary ammonium salts regarding TCI number Q6003E 20191018 (e.g., available at www.TCIchemicals.com), such as hexamethonium bromide, dimethyldioctylammonium bromide, tetrabutylammonium bromide, trimethylpropylammonium bromide, n-octyltrimethylammonium bromide, tetramethylammonium bromide, didodecyldimethylammonium bromide, heptadecyltrimethylammonium bromide, butyltrimethylammonium bromide, trimethylstearylammonium bromide, decamethonium bromide, ethylhexadecyldimethylammonium bromide, di-dodecyldimethylammonium bromide, cetyltrimethylammonium bromide (CTAB), tetrabutylammonium bromide (TBAB), tetrabutylammonium iodide, tetrapropylammonium iodide, tetrabutylammonium fluoride, tetrapropylammonium chloride, tetrabutylammonium perchlorate, tetrabutylammonium hexafluorophosphate, tetrabutylammonium tetrafluoroborate. Among them, hexamethonium bromide is more preferred. Preferably, didodecyldimethylammonium bromide, cetyltrimethylammonium bromide (CTAB), tetrabutylammonium bromide (TBAB) can also be used to prevent the color change of the composition under air conditions.

[0155] - Chemical compounds containing thiol

[0156] In a preferred embodiment of the present invention, the composition further comprises a chemical compound containing thiol. Preferably, based on the total amount of the composition in the absence of solvent, the total amount of the chemical compound containing thiol is in the range of 0.1 wt% to 20 wt%, more preferably it is 1 wt% to 15 wt%, and even more preferably it is 5 wt% to 10 wt%. Preferably, it is represented by the following chemical formula (P XA )

[0157] R xa1 -SH (P XA )

[0158] where

[0159] R xa1 is selected from a straight-chain alkyl having 1 - 40 carbon atoms, preferably 5 - 30 carbon atoms; a branched or cyclic alkyl having 3 - 40 carbon atoms, preferably 5 - 30 carbon atoms;

[0160] a straight-chain alkenyl or alkynyl having 2 - 40 carbon atoms, preferably 5 - 30 carbon atoms;

[0161] a branched alkenyl or alkynyl having 3 - 40 carbon atoms, preferably 5 - 30 carbon atoms;

[0162] an aromatic or heteroaromatic ring system having 5 - 40 aromatic ring atoms, preferably 5 - 30 aromatic ring atoms; where each can be substituted by one or more groups R a substituted,

[0163] R a is, each time it appears, the same or different and is H, D, a straight-chain alkyl or alkoxy group having 1 to 40 carbon atoms, preferably 1 to 25 carbon atoms, more preferably 1 to 15 carbon atoms; a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, preferably 3 to 25 carbon atoms, more preferably 3 to 15 carbon atoms; a straight-chain alkenyl or alkynyl group having 2 to 40 carbon atoms, preferably 2 to 24 carbon atoms, more preferably 2 to 12 carbon atoms; a branched alkenyl or alkynyl group having 3 to 40 carbon atoms, preferably 3 to 24 carbon atoms, more preferably 3 to 12 carbon atoms; an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, preferably 5 to 25 aromatic ring atoms, more preferably 5 to 18 aromatic ring atoms, wherein in each of the above groups, one or more H atoms may be replaced by D, F, Cl, Br, I, and wherein two or more adjacent substituents R a may optionally form a monocyclic or polycyclic aliphatic ring system with each other. The thiol-containing chemical compound may be added to the composition only as a ligand additive, and it may be introduced onto the surface of the light-emitting part (e.g., QD) as a ligand material by a known ligand exchange method or it may be introduced onto the surface of the light-emitting part by crystal binding as described in WO2020 / 216813A1.

[0164] Preferably, based on the total amount of the composition in the absence of solvent, the sum of the total amount of the chemical compound of formula (X a ) and the total amount of the thiol-containing chemical compound of claim 4 is in the range of 0.1 wt% to 20 wt%, more preferably it is 1 wt% to 15 wt%, and even more preferably it is 5 wt% to 10 wt%.

[0165] As the thiol-containing chemical compound, a known thiol-containing chemical compound that conforms to the definition of the thiol-containing chemical compound of the present invention may be used.

[0166] For example,

[0167] HS-(CH2) 7- CH3

[0168] HS-(CH2) 11- CH3

[0169] HS-(CH2) 17- CH3

[0170] 1-octadecanethiol

[0171] dodecanethiol

[0172] -mPEG thiol chemical compounds

[0173] In a preferred embodiment of the present invention, the composition further comprises a chemical compound comprising at least one group selected from the group consisting of: a straight-chain alkyl group having 1 to 80 carbon atoms or a branched-chain alkyl group having 3 to 80 carbon atoms, a straight-chain aryl-alkyl group having 5 to 45 carbon atoms, a branched-chain aryl-alkyl group having 6 to 45 carbon atoms, a straight-chain cycloalkyl group having 4 to 45 carbon atoms; and a branched-chain cycloalkyl group having 6 to 45 carbon atoms, wherein one or more of the non-adjacent CH2 groups in the above-mentioned groups are replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; preferably the molecular weight of the chemical compound is 2000 or less, more preferably 1000 or less, even more preferably 500 or less, and the molecular weight of the chemical compound is preferably 100 or more, more preferably 200 or more, even more preferably 300 or more, preferably the chemical compound further comprises at least one group selected from one or more members of the group consisting of: a phosphine group, a phosphine oxide group, a phosphate group, a phosphonate group, a thiol group, a tertiary amine, a carboxyl group, a heterocyclic group, a silyl group, a sulfonic acid, a hydroxyl group, a phosphonic acid.

[0174] The chemical compound can be added to the composition only as a ligand additive, which can be introduced onto the surface of the light-emitting part (e.g., QD) as a ligand material by a known ligand exchange method or which can be introduced onto the surface of the light-emitting part by crystal binding as described in WO2020 / 216813A1.

[0175] For example, the chemical compound can be preferably described as follows.

[0176] HS-CH2-(OCH2CH2)4-O-CH3

[0177] HS-CH2-(OCH2CH2)6-O-CH3

[0178] HS-CH2-(OCH2CH2)8-O-CH3

[0179] HS-(CH2)2-(OCH2CH2)2-O-CH3

[0180] HS-(CH2)2-(OCH2CH2)6-O-CH3

[0181] HS-(CH2)2-(OCH2CH2)8-O-CH3

[0182] HS-(CH2)2-(OCH2CH2) 16 -O-CH3

[0183] HS-(CH2)2-(OCH2CH2) 17 -O-CH3

[0184] HS-(CH2)2-(OCH2CH2)6-CH3

[0185] HS-(CH2)2-(OCH2CH2)6-O-(CH2)2-SH

[0186] HS-(CH2) 7- CH3

[0187] HSe-(CH2) 7- CH3

[0188] HS-(CH2) 11- CH3

[0189] HSe-(CH2) 11- CH3

[0190] HS-(CH2) 17- CH3

[0191] HSe-(CH2) 17- CH3

[0192] Other thiolated ligand materials such as polypropylene glycol and polypropylene glycol monomethyl ether can also be used. The thiolated ligand materials of Formula (I) and Formula (II) described in US11021651 B2, columns 17-18, line 28 of column 25 to line 16 of column 26, M1000-SH of Example 1. In the case of crystal binding as described in WO2020 / 216813A1, the above-mentioned materials are used as the source of the organic moiety, and the resulting covalently bonded organic moiety is included in this patent application as a chemical compound.

[0193] It is believed that the chemical compound prevents the aggregation of nanoparticles or nano-sized materials, and the organic moiety allows the nanoparticles to be dispersed in an organic medium and / or an aqueous medium.

[0194] - Luminescent moiety

[0195] According to the present invention, the luminescent moiety can be an organic luminescent material and / or an inorganic luminescent material. Preferably, it is an organic dye, an inorganic phosphor, and / or a semiconductor luminescent nanoparticle, such as a quantum material. As the organic dye, inorganic phosphor, and semiconductor luminescent nanoparticle, known materials can be used.

[0196] Such suitable inorganic luminescent materials as described above can be well-known phosphors, including nanosized phosphors, such as quantum-sized materials mentioned on pages 155 - 338 (W.M. Yen, S. Shionoya and H. Yamamoto) of the Phosphor Handbook, 2nd Edition (CRC Press, 2006), WO2011 / 147517A, WO2012 / 034625A and WO2010 / 095140A.

[0197] As the organic dye, for example, rhodamine, coumarin, pyrromethene, DCM, fluorescein, umbelliferone, BDHorizon Brilliant TM series can be used.

[0198] Preferably, the luminescent part is an inorganic luminescent material. More preferably, it is a semiconductor luminescent nanoparticle. The semiconductor luminescent nanoparticle preferably comprises, consists essentially of, or consists of: a core; optionally one or more shell layers; and optionally an outer layer covering at least a part of the core, the outer layer containing a metal cation and a divalent anion; and

[0199] an organic part, preferably one or more types of organic parts directly attached to the anion of the outer layer by a covalent bond,

[0200] wherein the divalent anion is selected from Se 2- 、S 2- 、Te 2- 、O 2- or a combination of any of these, preferably the metal cation is a monovalent cation, divalent cation, trivalent cation or tetravalent cation, more preferably the metal cation is a divalent cation selected from the group consisting of Zn 2+ 、Ni 2+ 、Co 2+ 、Ca 2+ 、Sr 2+ 、Hg 2+ 、Mg 2+ and Pb 2+ or a tetravalent cation selected from the group consisting of Ti 4 + 、Ge 4+ 、Si 4+ 、Zr 4+ 、Hf 4+ and Sn 4+ In some embodiments, the metal cation is a transition metal of Group 12 or Group 14, preferably selected from Zn 2+ 、Hg 2+ or Pb 2+One or more members of the group formed.

[0201] The outer layer covers at least a portion of the core. If there are no other layers between the outer layer and the core, the outer layer can have direct physical contact with the core.

[0202] The outer layer can cover the core via one or more of additional layers disposed between the outer layer and the core.

[0203] The terms "cover" and "coat" do not necessarily mean that there is always physical contact between the core and the outer layer. Preferably the core is completely covered by the outer layer and / or one or more shell layers.

[0204] Most preferably, the nanoparticle comprises a core, one or more shell layers and an outer layer, wherein the outermost shell layer of the one or more shell layers comprises Zn and S atoms.

[0205] In a preferred embodiment of the present invention, the outer layer of the luminescent portion comprises at least two or three different metal cations, such as Cu from the viewpoint of obtaining improved covalent bonds between the organic portion and the anion of the outer layer 1+ and In 3+ 、Cu 1+ and Ga 3+ 、Ag 1+ and Ga 3+ combinations or Cu +1 / In +3 / Zn +2 combinations.

[0206] According to the present invention, the term "nanosized" means a size in the range of 0.1 nm to 150 nm, preferably 0.5 nm to 100 nm, more preferably 1 nm to 50 nm.

[0207] According to the present invention, the term "semiconductor" means a material having at room temperature a conductivity to some extent between the conductivity of a conductor (such as copper) and the conductivity of an insulator (such as glass), preferably, the semiconductor is a material whose conductivity increases with temperature.

[0208] Thus, according to the present invention, the term "semiconductor nanoparticle" is employed to mean a material having at room temperature a conductivity to some extent between the conductivity of a conductor (such as copper) and the conductivity of an insulator (such as glass), preferably, the semiconductor is a material whose conductivity increases with temperature, and the size is 0.1 nm to 999 nm, preferably 0.5 nm to 150 nm, more preferably 1 nm to 50 nm.

[0209] According to the present invention, the term "size" means the average diameter of a circle having an area equal to the measured TEM projection of the semiconductor nano-sized luminescent particles.

[0210] In a preferred embodiment of the present invention, the semiconductor luminescent nanoparticles of the present invention are quantum-sized materials.

[0211] According to the present invention, the term "quantum sized" means the size of the first semiconductor nanoparticles themselves without ligands or another surface modification, which may exhibit quantum confinement effects as described, for example, in ISBN: 978-3-662-44822-9.

[0212] Generally, it is said that quantum-sized materials can emit tunable, sharp, and brightly colored light due to the "quantum confinement" effect.

[0213] In some embodiments of the present invention, the size of the overall structure of the quantum-sized material is from 1 nm to 50 nm.

[0214] In a preferred embodiment of the present invention, the average diameter of the first semiconductor nanoparticles (core) is in the range of 1 to 20 nm, preferably in the range of 1.5 to 12 nm.

[0215] The average diameter of the semiconductor luminescent nanoparticles (core) is calculated based on 100 semiconductor luminescent nanoparticles in a TEM image taken by a Tecnai G2 Spirit Twin T-12 transmission electron microscope. The average diameter of the semiconductor luminescent nanoparticles is calculated using the Fiji_ImageJ program.

[0216] According to the present invention, the semiconductor luminescent nanoparticles may have a core-shell structure. In the case where the semiconductor luminescent nanoparticles do not have any shell layer, the term "core" means the semiconductor luminescent nanoparticles themselves.

[0217] In some embodiments of the present invention, the core contains at least one element of Group 12 or Group 13 of the periodic table and one element of Group 15 or Group 16 of the periodic table.

[0218] In a preferred embodiment of the present invention, the first semiconductor material (the "core" of the semiconductor luminescent nanoparticles hereinafter) contains at least one element of Group 13 of the periodic table and one element of Group 15 of the periodic table. Preferably, the element of Group 13 is In, and the element of Group 15 is P.

[0219] In a preferred embodiment of the present invention, the first core may further contain additional elements selected from one or more members of the group consisting of Ga, Zn, S, and Se.

[0220] In some embodiments, the core is a metal oxide, which includes, for example, ZnO, FeO, Fe2O3, ZrO2, CuO, SnO, Cu2O, TiO2, WO3, HfO2, In2O3, MgO, Al2O3, and any combination thereof.

[0221] In some embodiments, the core includes a metal, such as Au, Ag, W, Pd, Pt, Cu, In, Ti, Zn, Pb, Al, Cd, Zn, and any combination of any one of these.

[0222] In a more preferred embodiment, the core is selected from the group consisting of InP, InPZn, InPZnS, InPZnSe, InPZnSeS, InPZnGa, InPGaS, InPGaSe, InPGaSeS, InPZnGaSeS, and InPGa.

[0223] According to the present invention, the shape of the core of the semiconductor luminescent nanoparticles and the type of the shape of the semiconductor luminescent nanoparticles to be synthesized are not particularly limited.

[0224] For example, spherical, elongated, star-shaped, polyhedral, pyramidal, tetrahedral, four-legged, tetrahedral, flake-shaped, conical, and irregular-shaped cores and / or semiconductor luminescent nanoparticles can be synthesized.

[0225] - Shell

[0226] According to the present invention, in a preferred embodiment, the core is at least partially embedded in the first shell, and more preferably, the core is completely embedded in one or more shells. In a preferred embodiment of the present invention, the one or more shells are disposed between the core and the outer layer. In other words, the semiconductor luminescent nanoparticles of the present invention may optionally include the following items, consist essentially of the following items, or consist of the following items in this sequence: a core, one or more shells covering the core, and an outer layer covering the shell.

[0227] - First shell

[0228] In some embodiments of the present invention, the shell includes at least one metal cation and at least one divalent anion as described in the outer layer portion and / or at least one Group 1 element of Group 12 of the periodic table and a Se atom or an S atom. Preferably, the Group 1 element is Zn.

[0229] For example, the first shell layer is selected from the group consisting of: Cs2S, Cs2Se, Cs2Te, Cs2O, Ag2S, Ag2Se, Ag2Te, Ag2O, Au2S, Au2Se, Au2Te, Au2O, Cu2S, Cu2Se, Cu2Te, Cu2O, ZnS, ZnSe, ZnTe, ZnO, CdS, CdSe, CdTe, CdO, CaS, CaSe, CaTe, CaO, NiS, NiSe, NiTe, NiO, MgS, MgSe, MgTe, MgO, HgS, HgSe, HgTe, HgO, PbS, PbSe, PbTe, PbO, CuS, CuSe, CuTe, CuO, CoS, CoSe, CoTe, CoO, SrO, SrS, SrSe, CoTe, SrO, FeS, FeSe, FeO, FeTe, In2S3, In2Se3, In2Te3, In2O3, Ga2S3, Ga2Se3, Ga2Te3, Ga2O3, Bi2S3, Bi2Se3, Bi2Te3, Bi2O3, Fe2S3, Fe2Se3, Fe2Te3, Fe2O3, TiS2, TiSe2, TiTe2, TiO2, SiS2, SiSe2, SiTe2, SiO2, ZrS2, ZrSe2, ZrTe2, ZrO2, HfS2, HfSe2, HfTe2, HfO2, SnS2, SnSe2, SnTe2, SnO2, GeS2, GeSe2, GeTe2, GeO, CuInZnS, CuInS2, CuInZnSe, CuInSe2, AgInZnS, AgInZnSe, CuGaZnS, CuGaZnSe, CuFeS2, CuFeSe2, and combinations of any one of these.

[0230] Preferably, it is selected from the group consisting of: ZnS, ZnSe, ZnTe, ZnO, CdS, CdSe, CdTe, CdO, CaS, CaSe, CaTe, CaO, NiS, NiSe, NiTe, NiO, MgS, MgSe, MgTe, MgO, HgS, HgSe, HgTe, HgO, PbS, PbSe, PbTe, PbO, CuS, CuSe, CuTe, CuO, CoS, CoSe, CoTe, CoO, SrO, SrS, SrSe, CoTe, SrO, FeS, FeSe, FeO, FeTe, and combinations of any one of these materials.

[0231] More preferably: ZnS, ZnSe, ZnTe, ZnO, or combinations of any one of these materials.

[0232] In some embodiments of the present invention, at least one (first) shell comprises or consists of a first element of Group 12 of the periodic table and a second element of Group 16 of the periodic table. Preferably, the first element is Zn, and the second element is S, Se, or Te; preferably, the first shell directly covering the core comprises or consists of a first element of Group 12 of the periodic table and a second element of Group 16 of the periodic table. Preferably, the first element is Zn, and the second element is S, Se, or Te.

[0233] In a preferred embodiment of the present invention, at least one shell (the first shell) is represented by the following formula (XI). Preferably, the shell directly covering the core is represented by the chemical formula (XI);

[0234] ZnS x Se y Te z -(XI)

[0235] where 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, 0 ≤ z ≤ 1, and x + y + z = 1. Preferably, 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, z = 0, and x + y = 1. Preferably, the shell is ZnSe, ZnS x Se y 、ZnS、ZnSe y Te z or ZnS x Te z 。

[0236] In some embodiments of the present invention, the shell is an alloy shell or a gradient shell. Preferably, the gradient shell is ZnS x Se y 、ZnSe y Te z 、or ZnS x Te z ,more preferably it is ZnS x Se y 。

[0237] In some embodiments of the present invention, the semiconductor light-emitting nanoparticles further comprise a second shell on the shell. Preferably, the second shell comprises or consists of a third element of Group 12 of the periodic table and a fourth element of Group 16 of the periodic table. More preferably, the third element is Zn, and the fourth element is S, Se, or Te, provided that the fourth element and the second element are different.

[0238] In some embodiments of the present invention, optionally, the first semiconductor nanoparticle as the core and the first shell can be at least partially embedded in the second shell. Preferably, the first semiconductor nanoparticle is completely embedded in the shell.

[0239] For example, the second shell layer is selected from the group consisting of: Cs2S, Cs2Se, Cs2Te, Cs2O, Ag2S, Ag2Se, Ag2Te, Ag2O, Au2S, Au2Se, Au2Te, Au2O, Cu2S, Cu2Se, Cu2Te, Cu2O, ZnS, ZnSe, ZnTe, ZnO, CdS, CdSe, CdTe, CdO, CaS, CaSe, CaTe, CaO, NiS, NiSe, NiTe, NiO, MgS, MgSe, MgTe, MgO, HgS, HgSe, HgTe, HgO, PbS, PbSe, PbTe, PbO, CuS, CuSe, CuTe, CuO, CoS, CoSe, CoTe, CoO, SrO, SrS, SrSe, CoTe, SrO, FeS, FeSe, FeO, FeTe, In2S3, In2Se3, In2Te3, In2O3, Ga2S3, Ga2Se3, Ga2Te3, Ga2O3, Bi2S3, Bi2Se3, Bi2Te3, Bi2O3, Fe2S3, Fe2Se3, Fe2Te3, Fe2O3, TiS2, TiSe2, TiTe2, TiO2, SiS2, SiSe2, SiTe2, SiO2, ZrS2, ZrSe2, ZrTe2, ZrO2, HfS2, HfSe2, HfTe2, HfO2, SnS2, SnSe2, SnTe2, SnO2, GeS2, GeSe2, GeTe2, GeO, CuInZnS, CuInS2, CuInZnSe, CuInSe2, AgInZnS, AgInZnSe, CuGaZnS, CuGaZnSe, CuFeS2, CuFeSe2, and combinations of any one of these.

[0240] Preferably, it is selected from the group consisting of: ZnS, ZnSe, ZnTe, ZnO, CdS, CdSe, CdTe, CdO, CaS, CaSe, CaTe, CaO, NiS, NiSe, NiTe, NiO, MgS, MgSe, MgTe, MgO, HgS, HgSe, HgTe, HgO, PbS, PbSe, PbTe, PbO, CuS, CuSe, CuTe, CuO, CoS, CoSe, CoTe, CoO, SrO, SrS, SrSe, CoTe, SrO, FeS, FeSe, FeO, FeTe, and combinations of any one of these materials.

[0241] More preferably: ZnS, ZnSe, ZnTe, ZnO, or combinations of any one of these materials.

[0242] In some embodiments of the present invention, the second shell layer comprises at least a first element of Group 12 of the periodic table and a second element of Group 16 of the periodic table. Preferably, the first element is Zn, and the second element is S, Se, O, or Te.

[0243] In a preferred embodiment of the present invention, the second shell layer is represented by the following formula (XI′):

[0244] ZnS x Se y Te z -(XI′)

[0245] where 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, 0 ≤ z ≤ 1, and x + y + z = 1. Preferably, the shell layer is ZnSe, ZnS x Se y 、ZnSe y Te z 、or ZnS x Te z , provided that the shell layer and the second shell layer are different.

[0246] In some embodiments of the present invention, the second shell layer may be an alloy shell layer.

[0247] In some embodiments of the present invention, the semiconductor light-emitting nanoparticles may further comprise one or more additional shell layers on the second shell layer as a multiple shell.

[0248] According to the present invention, the term "multiple shell" represents a stacked shell layer composed of three or more shell layers.

[0249] For example, as the shell layer, CdS, CdZnS, CdS / ZnS, CdS, ZnS, ZnS / ZnSe, ZnSe / ZnS, or a combination of any of these may be used. Preferably, ZnS, ZnSe, or ZnSe / ZnS.

[0250] For example, as the semiconductor light-emitting material having a core / shell structure, CdSe / CdS, CdSeS / CdZnS, CdSeS / CdS / ZnS, ZnSe / CdS, CdSe / ZnS, InP / ZnS, InP / ZnSe, InP / ZnSe / ZnS, InZnP / ZnS, InZnP / ZnSe, InZnP / ZnSe / ZnS, InGaP / ZnS, InGaP / ZnSe, InGaP / ZnSe / ZnS, InZnPS / ZnS, InZnPS / ZnSe, InZnPS / ZnSe / ZnS, ZnSe / CdS, ZnSe / ZnS, or a combination of any one of these can be used. Preferably, InP / ZnS, InP / ZnSe, InP / ZnSe / ZnS, InZnP / ZnS, InZnP / ZnSe, InZnP / ZnSe / ZnS, InGaP / ZnS, InGaP / ZnSe, InGaP / ZnSe / ZnS.

[0251] Such semiconductor light-emitting nanoparticles are publicly available (e.g., from Sigma Aldrich) and / or can be synthesized by methods described, for example, in US 7,588,828 B, US 8,679,543 B, and Chem. Mater. 2015, 27, pages 4893 - 4898.

[0252] - Organic moiety

[0253] In a preferred embodiment of the present invention, the organic moiety is represented by the following chemical formula (I);

[0254] A - B - * (I)

[0255] Where

[0256] A is an organic group, preferably the organic group is a hydrocarbon group (alkyl, aryl, aralkyl, and alkylaryl), a heteroaromatic group (including aryl, alkaryl, alkyl, or aralkyl), an alkylamine, a fluoroaryl, a fluoroalkaryl, a fluoroalkyl, a fluoroaralkyl, a heteroaromatic group (including fluoroaryl, fluoroalkaryl, fluoroalkyl, or fluoroaralkyl);

[0257] B is a linking unit, preferably B is ** - (U) o - (Y) m - (CR IIa R IIb ) n , where "**" represents the connection point with "A"; and

[0258] "*" represents the connection point with the anion in the outer layer.

[0259] More preferably, the organic moiety is represented by the following chemical formula (II), (III) or (III');

[0260] L-(U) o -(Y) m -(CR IIa R IIb ) n -*(II)

[0261] wherein

[0262] L is an organic group, preferably the organic group is a hydrocarbon group (alkyl, aryl, aralkyl and alkaryl), a heteroaromatic group (including aryl, alkaryl, alkyl or aralkyl), an alkylamine, a fluoroaryl, a fluoroalkaryl, a fluoroalkyl, a fluoroaralkyl, a heteroaromatic group (including fluoroaryl, fluoroalkaryl, fluoroalkyl or fluoroaralkyl);

[0263] U is O, CH2 or C=O;

[0264] Y is O, CH2 or C=O;

[0265] R IIa and R IIb each independently of one another, in each occurrence, are selected from a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 10 carbon atoms, a branched-chain alkyl group having 3 to 10 carbon atoms; preferably a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 5 carbon atoms, a branched-chain alkyl group having 3 to 5 carbon atoms; preferably R IIa and R IIb are hydrogen atoms;

[0266] n is an integer of 1 or greater;

[0267] m is 0 or 1 or an integer greater than 1, preferably m is 1;

[0268] o is 0 or 1 or an integer greater than 1, preferably o is 1;

[0269] "*" represents the point of attachment to the anion in the outer layer;

[0270] *-(CR IIIe R IIIf ) a -(OCR IIIa R IIIb CR IIIc R IIId ) p -(V) r -(CR IIIg R IIIh ) q -Z(III)

[0271] *-(CR IIIgR IIIh ) q -(V) r -(OCR IIIa R IIIb CR IIIc R IIId ) p -Z(III′)

[0272] wherein

[0273] R IIIa 、R IIIb 、R IIIc 、R IIId 、R IIIe 、R IIIf 、R IIIg and R IIIh are each independently selected, each time they appear, from a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 10 carbon atoms, and a branched-chain alkyl group having 3 to 10 carbon atoms; preferably a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 5 carbon atoms, and a branched-chain alkyl group having 3 to 5 carbon atoms; preferably R IIIg and R IIIh are hydrogen atoms, preferably R IIIe and R IIIf are hydrogen atoms; V is O, CH2 or C═O;

[0274] Z is a hydrogen atom or an organic group, preferably Z is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, a branched-chain alkyl group having 3 to 25 carbon atoms, -COOH, -SH, or -NH2, alkylamine, fluoroaryl, fluoroalkylaryl, fluoroalkyl, fluoroarylalkyl, heteroaromatic group (including fluoroaryl, fluoroalkylaryl, fluoroalkyl or fluoroarylalkyl), preferably Z is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, a branched-chain alkyl group having 3 to 25 carbon atoms, more preferably it is a hydrogen atom, a straight-chain alkyl group having 1-15 carbon atoms, a branched-chain alkyl group having 3-15 carbon atoms, even more preferably it is a hydrogen atom, or a straight-chain alkyl group having 1-10 carbon atoms;

[0275] a is 0 or 1 or an integer greater than 1, preferably 0 ≤ a ≤ 25, more preferably 0 ≤ a ≤ 15, even more preferably 1 ≤ a ≤ 10;

[0276] p is 0 or 1 or an integer greater than 1, preferably 0 ≤ p ≤ 45, more preferably 0 ≤ p ≤ 25, even more preferably 1 ≤ p ≤ 20, also preferably 4 ≤ p ≤ 18;

[0277] q is 0 or 1 or an integer greater than 1, preferably 0 ≤ q ≤ 25, more preferably 0 ≤ q ≤ 15, even more preferably 0 ≤ q ≤ 10, also preferably it is 1 ≤ q ≤ 5;

[0278] r is 0 or the integer 1;

[0279] "*" represents the point of attachment to the anion in the outer layer.

[0280] Even more preferably, the organic moiety is represented by the following chemical formula (IV):

[0281] *-(CR IIIe R IIIf ) a -(OCR IIIa R IIIb CR IIIc R IIId ) p -(V) r -(CR IIIg R IIIh ) q -Z′(IV)

[0282] where

[0283] R IIIa 、R IIIb 、R IIIc 、R IIId 、R IIIe 、R IIIf 、R IIIg and R IIIh are each independently of one another, at each occurrence, selected from a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 10 carbon atoms, and a branched-chain alkyl group having 3 to 10 carbon atoms; preferably a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 5 carbon atoms, and a branched-chain alkyl group having 3 to 5 carbon atoms; preferably R IIIg and R IIIh are hydrogen atoms, preferably R IIIe and R IIIf are hydrogen atoms;

[0284] a is 0 or 1 or an integer greater than 1, preferably 0≤a≤25, more preferably 0≤a≤15, even more preferably 1≤a≤10;

[0285] p is 0 or 1 or an integer greater than 1, preferably 0≤p≤45, more preferably 0≤p≤25, even more preferably 1≤p≤20, also preferably 4≤p≤18;

[0286] q is 0 or 1 or an integer greater than 1, preferably 0≤q≤25, more preferably 0≤q≤15, even more preferably 0≤q≤10, also preferably it is 1;

[0287] V is O, CH2 or C=O;

[0288] Z′ is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, a branched-chain alkyl group having 3 to 25 carbon atoms, an alkylamine, a fluoroaryl group, a fluoroalkylaryl group, a fluoroalkyl group, a fluoroarylalkyl group, a heteroaromatic group (including a fluoroaryl group, a fluoroalkylaryl group, a fluoroalkyl group or a fluoroarylalkyl group), preferably Z′ is a straight-chain alkyl group having 1 to 25 carbon atoms, a branched-chain alkyl group having 3 to 25 carbon atoms or a hydrogen atom, more preferably it is a straight-chain alkyl group having 1-15 carbon atoms, a branched-chain alkyl group having 3-15 carbon atoms or a hydrogen atom, and even more preferably it is a hydrogen atom;

[0289] r is 0 or the integer 1;

[0290] “*” represents the point of attachment to the anion in the outer layer, preferably it is attached to an S or Se atom in the outer layer.

[0291] In some of the preferred embodiments, the organic moiety is CH3-(CH2) 7<n<18 -* and is attached to an S or Se atom in the outer layer.

[0292] In a preferred embodiment of the present invention, the organic moiety selected from formula (I), (II), (III), (III`) or (IV) is covalently bonded to the anion in the inorganic lattice of the outer layer, preferably it is not removed by ligand exchange.

[0293] The crystal-binding ligand (covalently binding ligand) can be characterized as described in Working Example 7 of WO2020 / 216813A1 and Figure 4 therein.

[0294] For example, the organic moiety can be preferably described as follows.

[0295] *-CH2-(OCH2CH2)4-O-CH3

[0296] *-CH2-(OCH2CH2)6-O-CH3

[0297] *-CH2-(OCH2CH2)8-O-CH3

[0298] *-(CH2)2-(OCH2CH2)2-O-CH3

[0299] *-(CH2)2-(OCH2CH2)6-O-CH3

[0300] *-(CH2)2-(OCH2CH2)8-O-CH3

[0301] *-(CH2)2-(OCH2CH2)6-CH3

[0302] *-(CH2)2-(OCH2CH2)6-O-(CH2)2-SH

[0303] *-(CH2) 7- CH3

[0304] *-(CH2) 11- CH3

[0305] *-(CH2) 17- CH3

[0306] *-(CH2)2-(OCH2CH2) 16 -O-CH3

[0307] *-(CH2)2-(OCH2CH2) 17 -O-CH3

[0308] “*” represents the connection point to the S atom or Se atom in the outer layer; or

[0309] *-(CH2) 11- CH3

[0310] “*” represents the connection point to the Se atom or S atom in the outer layer.

[0311] Other thiolated ligand materials such as polypropylene glycol and polypropylene glycol monomethyl ether can also be used, the thiolated ligand materials of Formula (I) and Formula (II) described in US11021651 B2, columns 17-18, line 28 of column 25 to line 16 of column 26, and M1000-SH of Example 1 as the source of the organic moiety, and the resulting covalently bonded organic moiety is included in this patent application.

[0312] It is believed that the organic moiety prevents the aggregation of nanoparticles or nano-sized materials, and the organic moiety allows the nanoparticles to be dispersed in an organic medium and / or an aqueous medium.

[0313] In particular, it is believed that when mixed with the reactive monomer of the present invention or a mixture of two or more reactive monomers, the organic moiety of the anion directly attached to the outer layer of the light-emitting portion through a covalent bond can achieve one or more of the technical effects of the present invention. Preferably, two or more of the reactive monomers of the reactive monomer or monomer mixture are one or more (meth)acrylate monomers. More preferably, it is a specific (meth)acrylate monomer as defined in the following reactive monomer moiety. It is believed that such a specific combination of a light-emitting portion having a covalently bonded organic moiety directly attached to the outer layer thereof and one or more specific (meth)acrylate monomers can unexpectedly improve the thermal stability of the obtained layer (film), the thermal stability of the light-emitting portion in the layer (film), the dispersibility of the light-emitting portion in the composition, the ability to achieve phase separation of the light-emitting portion from the matrix material after curing, achieve an improved haze value of the cured film (cured composition), the long-term quantum yield (QY) stability of the light-emitting portion in the composition during longer-term storage with or without light irradiation, the long-term external quantum efficiency (EQE) stability of the light-emitting portion in the composition during longer-term storage with or without light irradiation, the long-term quantum yield (QY) stability of the light-emitting portion in the obtained layer (film) during longer-term storage with or without light irradiation, the long-term external quantum efficiency (EQE) stability of the light-emitting portion in the obtained layer (film) during longer-term storage with or without light irradiation, the good compatibility of the light-emitting portion with the matrix material in the composition and / or the obtained layer (film), and / or achieve easy handling of the composition containing the light-emitting portion and the matrix material.

[0314] In some embodiments, the organic moiety may comprise a zwitterionic group.

[0315] - outer layer

[0316] According to the present invention, the semiconductor nanoparticles comprise an outer layer covering at least a portion of the core, the outer layer comprising at least one metal cation and at least one divalent anion,

[0317] wherein the divalent anion is selected from Se 2- , S 2- , Te 2- , O 2- or a combination of any of these, preferably the metal cation is a monovalent cation, divalent cation, trivalent cation or tetravalent cation, more preferably the metal cation is selected from the group consisting of Zn 2+ , Ni 2+ , Co 2+ , Ca 2+ , Sr 2+ , Fe 2+ , Hg 2+ , Mg2+ and Pb 2+ a divalent cation of a group consisting of, or selected from the group consisting of Ti 4+ , Ge 4+ , Si 4+ , Zr 4+ , Hf 4+ and Sn 4+ a tetravalent cation of a group consisting of,

[0318] In some embodiments, the cation is selected from the group consisting of Cs + , Ag + , Au + , Cu +1 a monovalent cation of a group consisting of, or selected from the group consisting of Zn 2+ , Fe +2 , Ni 2+ , Co 2+ , Ca 2+ , Sr 2+ , Hg 2+ , Mg 2+ and Pb 2+ , Cu +2 a divalent cation of a group consisting of, or selected from the group consisting of Fe +3 , In +3 , Bi +3 , Ga +3 a trivalent cation of a group consisting of, or selected from the group consisting of Ti 4+ , Ge 4+ , Si 4+ , Zr 4+ , Hf 4+ and Sn 4+ , Si +4 a tetravalent cation of a group consisting of,

[0319] In some embodiments of the present invention, the outer layer comprises at least two or three different metal cations, such as Cu 1+ and In 3+ , Cu 1+ and Ga 3+ , Ag 1+ and Ga 3+ a combination of, or Cu +1 / In +3 / Zn +2 a combination of, or Cu +1 / Ga +3 / Zn +2 a combination of, or Cu +1 / In +3 / Ga +3 / Zn +2 a combination of, or Cu +1 / In +3 / Ga+3 combination

[0320] In a preferred embodiment, the metal cation is selected from the group consisting of Fe +2 , Zn 2+ , Ni 2+ , Co 2+ , Ca 2+ , Sr 2+ , Hg 2+ , Mg 2+ and Pb 2+ , Cu +2 and is a divalent cation of the group consisting of

[0321] In a preferred embodiment of the present invention, the outer layer comprises, consists essentially of, or consists of the following: a material represented by the following chemical formula (VI),

[0322] QP 1-2h A h (VI)

[0323] wherein Q is a divalent anion selected from one or more members of the group consisting of Se 2- , S 2- , Te 2- and O 2- ;

[0324] P is a divalent metal cation, preferably P is selected from one or more members of the group consisting of Zn 2+ , Ni 2+ , Co 2+ , Ca 2+ , Sr 2+ , Hg 2+ , Mg 2+ and Pb 2+ ;

[0325] A is a tetravalent cation, preferably A is selected from one or more members of the group consisting of Ti 4+ , Ge 4+ , Si 4+ and Sn 4+ ; and

[0326] 0 ≤ h ≤ 0.5.

[0327] For example, ZnS, ZnSe, ZnSeS, ZnTe, ZnO, ZnNiS, ZnNiSe, ZnGeS, ZnGeO, ZnCaS, NiSe, TiGeSeS, ZnTiS, CuInZnS, CuInZnSe, AgInZnS, and / or AgInZnSe can be used.

[0328] According to the present invention, preferably, the outer layer is a single layer.

[0329] More preferably, it is the outermost single layer covering the core semiconductor nanoparticles. In the case where there are one or more shell layers covering the core, the outer layer covers these shell layers.

[0330] In some embodiments of the present invention, the concentration of Se in the shell layer varies from a high concentration on the side of the first semiconductor nanoparticles in the shell layer to a low concentration on the opposite side of the shell layer. More preferably, the concentration of S in the shell layer varies from a low concentration on the side of the first semiconductor nanoparticles in the shell layer to a higher concentration on the opposite side of the shell layer, and the concentration of Te in the shell layer varies from a high concentration on the side of the first semiconductor nanoparticles in the shell layer to a lower concentration on the opposite side of the shell layer.

[0331] In some embodiments of the present invention, in addition to the organic part of the present invention, the surface of the light-emitting part (i.e., semiconductor light-emitting nanoparticles) can also be coated with one or more surface ligands.

[0332] Without wishing to be bound by theory, it is believed that such surface ligands can more easily cause the nanosized fluorescent material to be dispersed in a solvent.

[0333] Commonly used surface ligands include phosphines and phosphine oxides, such as trioctylphosphine oxide (TOPO), trioctylphosphine (TOP), and tributylphosphine (TBP); phosphonic acids, such as dodecylphosphonic acid (DDPA), tridecylphosphonic acid (TDPA); amines, such as oleylamine, dodecylamine (DDA), tetradecylamine (TDA), hexadecylamine (I), and octadecylamine (ODA), oleylamine (OLA), 1-octadecene (ODE); thiols, which can be saturated or include one or more unsaturated carbon bonds and / or aromatic rings when the organic part of the thiol can include a straight-chain or branched alkyl chain, such as octadecanethiol, hexadecanethiol, dodecanethiol, hexanethiol, and polyethylene glycol thiol; selenols, which can be saturated or include one or more unsaturated carbon bonds and / or aromatic rings when the organic part of the selenol can include a straight-chain or branched alkyl chain; mercaptocarboxylic acids, such as mercaptopropionic acid and mercaptoundecanoic acid; carboxylic acids, such as oleic acid, stearic acid, myristic acid, isostearic acid; acetic acid and combinations of any of these. In addition, the ligands can include zinc oleate, zinc acetate, zinc myristate, zinc stearate, zinc laurate, and other zinc carboxylates, zinc isostearate, sulfonic acids, halides, and carbamates.

[0334] Examples of surface ligands have been described, for example, in International Publication Patent Application No. WO 2012 / 059931A.

[0335] - Measurement of quantum yield

[0336] According to the present invention, the quantum yield (QY) of the quantum dots is measured using a Hamamatsu absolute quantum yield spectrometer (Model: Quantaurus C11347).

[0337] Preferably, the nanoparticles emit light having a peak maximum optical emission wavelength in the range of 350 nm to 3500 nm, preferably 350 nm to 2000 nm, more preferably 400 nm to 800 nm, and even more preferably 430 nm to 700 nm.

[0338] In a preferred embodiment, the total amount of the light-emitting portion is in the range of 0.1 wt.% to 90 wt.%, preferably 10 wt.% to 70 wt.%, and more preferably 30 wt.% to 50 wt.% based on the total amount of the composition.

[0339] - Reactive monomer

[0340] It is considered that a lower viscosity is important for preparing a low-viscosity composition suitable for inkjet printing. Therefore, (meth)acrylate monomers having a viscosity value within the above parameter range are particularly suitable for preparing a composition for inkjet printing. By using these (meth)acrylate monomers in the composition, when mixed with another material such as semiconductor light-emitting nanoparticles at a high loading amount, the composition can still maintain a lower viscosity within the range suitable for inkjet printing.

[0341] Furthermore, it is considered that a combination of the reactive monomer or a mixture of two or more reactive monomers of the present invention, preferably a (meth)acrylate monomer or a mixture of two or more (meth)acrylate monomers, and a light-emitting portion having an outer layer containing a metal cation and a divalent anion, and one or more types of organic moieties of anions directly attached to the outer layer by covalent bonds; can specifically improve the optical properties of the light-emitting portion in the obtained layer (film).

[0342] It is also considered that the combination can also lead to improvements in the thermal stability of the obtained layer (film), the thermal stability of the light-emitting part in the layer (film), the dispersibility of the light-emitting part in the composition, the ability to achieve phase separation of the light-emitting part and the matrix material after curing, the improvement of the haze value of the cured film (cured composition), the long-term quantum yield (QY) stability of the light-emitting part in the composition during longer-term storage with or without light radiation, the long-term external quantum efficiency (EQE) stability of the light-emitting part in the composition during longer-term storage with or without light radiation, the long-term quantum yield (QY) stability of the light-emitting part in the obtained layer (film) during longer-term storage with or without light radiation, the long-term external quantum efficiency (EQE) stability of the light-emitting part in the obtained layer (film) during longer-term storage with or without light radiation, the good compatibility of the light-emitting part and the matrix material in the composition and / or the obtained layer (film), and / or the easy handling of the composition containing the light-emitting part and the matrix material.

[0343] In a preferred embodiment of the present invention, the boiling point (B.P.) of the reactive monomer is 95 °C or higher, preferably in the range of 95 °C to 350 °C, for large-area uniform inkjet printing.

[0344] It is considered that the high boiling point is also important for preparing a composition with a lower vapor pressure, preferably less than 0.001 mmHg, for large-area uniform printing. Preferably, a reactive monomer is used, preferably a (meth)acrylate monomer, more preferably a (meth)acrylate monomer of formula (I), (II) and / or (III) having a viscosity value of 25 cP or less at 25 °C and a boiling point of at least 95 °C or higher (preferably in the range of 95 °C to 350 °C), to prepare a composition suitable for large-area uniform inkjet printing, even when it is mixed with a high loading amount of other materials such as high loading amounts of semiconductor light-emitting nanoparticles.

[0345] Here, the term “(meth)acrylate” is a general term for acrylate and methacrylate. Thus, according to the present invention, the term “(meth)acrylate monomer” means a methacrylate monomer and / or an acrylate monomer.

[0346] According to the present invention, the B.P. can be estimated by known methods, such as those described in Science of Petroleum, Volume II, page 1281 (1398).

[0347] According to the present invention, any type of publicly available acrylate and / or methacrylate represented by chemical formula (I) or (II) can be preferably used.

[0348] Particularly for the first aspect, any type of publicly available acrylate and / or methacrylate having a viscosity value of 25 cP or less at 25 °C represented by chemical formula (I), (II) and / or (III) can be used.

[0349] Thus, according to the present invention, the reactive monomer of the composition is preferably a (meth)acrylate monomer selected from mono-(meth)acrylate monomers, di-(meth)acrylate monomers and / or tri-(meth)acrylate monomers.

[0350] Preferably, the reactive monomers of the monomer mixture are each independently selected from mono-(meth)acrylate monomers, di-(meth)acrylate monomers and / or tri-(meth)acrylate monomers.

[0351] Preferably, the di-(meth)acrylate monomer is represented by the following chemical formula (I b ), the monoacrylate monomer is represented by the following chemical formula (II b ), and / or the tri-(meth)acrylate monomer is represented by the following chemical formula (III b );

[0352]

[0353] wherein

[0354] X 1 is an ester group, an alkyl group or an aryl group, wherein one or more non-adjacent CH2 groups, alkyl groups or aryl groups of the ester can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2;

[0355] Preferably, the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms;

[0356] Preferably, the ester group is represented by the following formula (I bs1 );

[0357]

[0358] wherein R Ib1 is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms;

[0359] R Ib2is a single bond, an unsubstituted or substituted straight-chain alkylene chain having 1 to 5 carbon atoms, an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein one or more non-adjacent CH2 groups can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; preferably R Ib2 is an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein at least one of the non-adjacent CH2 groups can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2;

[0360] X 2 is an ester group, an alkyl group or an aryl group, wherein one or more non-adjacent CH2 groups, alkyl groups or aryl groups of the ester can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; preferably the alkyl group has 1 to 45 carbon atoms, preferably the aryl group has 3 to 45 carbon atoms;

[0361] Preferably the ester group is represented by the following formula (I bs2 )

[0362]

[0363] wherein R Ibs1 is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms;

[0364] R Ibs2 is a single bond, an unsubstituted or substituted straight-chain alkylene chain having 1 to 5 carbon atoms, an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein one or more non-adjacent CH2 groups can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; preferably R Ib2 is an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein at least one of the non-adjacent CH2 groups can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2;

[0365] R 1 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, wherein one or more non-adjacent CH2 groups of the alkyl or aryl group may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; or X 1 is an ester group; preferably the ester group is a carboxylic acid group; preferably the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms;

[0366] R 2 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, wherein one or more non-adjacent CH2 groups of the alkyl or aryl group may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; or X 1 is an ester group; preferably the ester group is a carboxylic acid group; preferably the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms;

[0367]

[0368] R 5 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, an alkoxy group, an ester group, or a carboxylic acid group;

[0369] X 3 is an ester group, an alkyl group, a cycloalkyl group, an aryl group or an alkoxy group, in the case of X 3 is an ester group, the ester group is represented by the following formula (II bs )

[0370]

[0371] wherein R IIb1 is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms;

[0372] R IIb2 is a substituted or unsubstituted alkyl group, a ring group, a cycloalkyl group, an aryl group or an alkoxy group; preferably the symbol X 3 is

[0373] wherein the "*" on the left side of the formula represents the connection point with the terminal C=CR of the formula (I 5 ;

[0374] l is 0 or 1;

[0375] R 6 is a straight-chain alkylene chain or alkoxy chain having 1 to 25 carbon atoms, preferably R 6 is a straight-chain alkylene chain or alkoxy chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms,

[0376] which may be substituted by one or more groups R a wherein one or more non-adjacent CH2 groups may be replaced by R a C═CR a 、C≡C、Si(R a )2、Ge(R a )2、Sn(R a )2、C═O、C═S、C═Se、C═NR a 、P(═O)(R a )、SO、SO2、NR a 、OS、or CONR a and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0377] R 7 is a straight-chain alkylene chain or alkoxy chain having 1 to 25 carbon atoms, preferably R 7 is a straight-chain alkylene chain or alkoxy chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms,

[0378] which may be substituted by one or more groups R a wherein one or more non-adjacent CH2 groups may be replaced by R a C═CR a 、C≡C、Si(R a )2、Ge(R a )2、Sn(R a )2、C═O、C═S、C═Se、C═NR a 、P(═O)(R a )、SO、SO2、NR a 、OS、or CONR a and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0379] R aIdentically or differently at each occurrence is H, D, or an alkyl group having 1 to 20 carbon atoms, a cycloalkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a heteroaromatic ring system having 5 to 60 carbon atoms, where the H atom can be replaced by D, F, Cl, Br, I; here two or more adjacent substituents R a can also form a monocyclic or polycyclic, aliphatic, aromatic, or heteroaromatic ring system with each other.

[0380]

[0381] wherein R 9 is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, or a (meth)acryloyl group represented by the chemical formula (IV b )

[0382]

[0383] R 10 is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, or a (meth)acryloyl group represented by the chemical formula (V b )

[0384]

[0385] R 11 is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, or a (meth)acryloyl group represented by the chemical formula (VI b )

[0386]

[0387] wherein R 8 , R 8a , R 8b and R 8c are each independently or dependently of each other at each occurrence H, CH3, or CH2CH3;

[0388] wherein at least one of R 9 , R 10 and R 11 is a (meth)acryloyl group, preferably two of R 9 , R 10 and R 11 are (meth)acryloyl groups, and the other is a hydrogen atom or a straight-chain alkyl group having 1 to 25 carbon atoms, preferably the conductivity (S / cm) of the (meth)acrylate monomer of formula (III) is 1.0*10 -10 or less, preferably it is 5.0*10 -11 or less, more preferably it is at 5.0*10 -11to 1.0*10 -15 within the range of, and even more preferably it is in the range of 5.0*10 -12 to 1.0*10 -15 .

[0389] More preferably, the reactive monomer is represented by Chemical Formula (II).

[0390] In a preferred embodiment, the monomer mixture of the composition comprises a (meth)acrylate monomer of Chemical Formula (II) and another (meth)acrylate monomer selected from Chemical Formula (I) and / or a (meth)acrylate monomer of Chemical Formula (III).

[0391] In a preferred embodiment of the present invention, the (meth)acrylate monomer of Chemical Formula (II) is present in the composition, and the mixing ratio of the (meth)acrylate monomer of Chemical Formula (I) to the (meth)acrylate monomer of Chemical Formula (II) is in the range of 1:99 to 99:1 (Formula (I): Formula (II)), preferably 5:95 to 50:50, more preferably 10:90 to 40:60, and even more preferably it is 15:85 to 40:60. Preferably, at least one purified (meth)acrylate monomer of Chemical Formula (I) and (II) is used in the composition, and more preferably both the (meth)acrylate monomer of Chemical Formula (I) and the (meth)acrylate monomer of Chemical Formula (II) are obtained or obtainable by a purification method.

[0392] In a preferred embodiment, the boiling point (B.P.) of the (meth)acrylate monomer of Chemical Formula (I) and / or Chemical Formula (II) is 95°C or higher, preferably both the (meth)acrylate monomers of Chemical Formula (I) and Chemical Formula (II) are 100°C or higher, more preferably it is in the range of 100°C to 350°C, and even more preferably the boiling point (B.P.) of the (meth)acrylate monomer of Chemical Formula (I) is in the range of 100°C to 300°C, and the boiling point (B.P.) of the (meth)acrylate monomer of Chemical Formula (II) is in the range of 150°C to 320°C.

[0393] In a preferred embodiment of the present invention, the viscosity of the composition at room temperature is 35 cP or less, preferably in the range of 1 to 35 cP, more preferably 2 to 30 cP, and even more preferably 2 to 25 cP.

[0394] According to the present invention, the viscosity can be measured at room temperature by a vibration-type viscometer VM-10A (SEKONIC).

[0395] https: / / www.sekonic.co.jp / english / product / viscometer / vm / vm_series.html

[0396] -(Meth)acrylate monomer represented by chemical formula (I) as a matrix material

[0397] Also preferably, in (I bs1 ) R Ib1 is a single bond, in (I bs2 ) R Ibs1 is a single bond, in (I bs1 ) R Ib2 is an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, R Ibs2 is a single bond, an unsubstituted straight-chain alkylene chain having 1 to 5 carbon atoms, an unsubstituted branched alkylene chain having 3 to 7 carbon atoms, where one or more non-adjacent CH2 groups may be replaced by an oxygen atom; or the R 3 of formula (I) and the R 4 of formula (I) are each independently selected from the following groups.

[0398]

[0399]

[0400] Particularly preferably, the R 3 and R 4 of formula (I) are independently or differently selected from the following groups each time they appear.

[0401]

[0402] wherein in the case of R 3 "*" represents the point of attachment to the oxygen atom of the formula or the point of attachment to the X 2 of the formula, and wherein in the case of R 4 "*" represents the point of attachment to the oxygen atom of the formula or the point of attachment to the X 1 of the formula.

[0403] Particularly preferably, the formula (I) is NDDA (nonanediol diacrylate), HDDMA (hexanediol dimethacrylate), HDDA (hexanediol diacrylate) or DPGDA (dipropylene glycol diacrylate).

[0404] -(Meth)acrylate monomer represented by chemical formula (II)

[0405] It is considered that the (meth)acrylate monomer represented by the following chemical formula (II) exhibits a much lower viscosity value than the (meth)acrylate monomer of formula (I). Therefore, by using a combination of the (meth)acrylate monomer represented by chemical formula (II) and the (meth)acrylate monomer of formula (I), a composition having a much lower viscosity desirable for stable inkjet printing can be preferably achieved without reducing the external quantum efficiency (EQE) value.

[0406] It is considered that the combination can achieve a low-viscosity composition containing a high amount of other materials (such as a high loading amount of a light-emitting part, especially semiconductor light-emitting nanoparticles). Therefore, when the composition contains a higher amount of the light-emitting part, it is particularly suitable for inkjet printing.

[0407] Also preferably, the R bs of (II IIb1 ) is a single bond, and the R bs of (II IIb2 ) is a substituted or unsubstituted alkyl group, a cyclic group, a cycloalkyl group; the R bs of (II IIb2 ) can be selected from the following groups.

[0408]

[0409] Or the R 7 of formula (II) is independently or differently selected from the following groups each time it appears, and these groups can be substituted by R a , and preferably they are not substituted by R a .

[0410] <![CDATA[*-(CH2)6-CH3]]> <![CDATA[*-(CH2)7-CH3]]> <![CDATA[*-(CH2)8-CH3]]> <![CDATA[*-(CH2)9-CH3]]> <![CDATA[*-(CH2) 10 -CH3]]> <![CDATA[*-(CH2) 11 -CH3]]> <![CDATA[*-(CH2) 12 -CH3]]> <![CDATA[*-(CH2)4-OH]]> <![CDATA[*-(CH2)2-OH]]> <![CDATA[*-(CH2)6-OH]]> <![CDATA[*-(CH2)3-OH]]> <![CDATA[*-(CH2)5-OH]]>

[0411] Wherein "*" represents the connection point with the R 3 of X 6 when l is 1, and it represents the connection point with the oxygen atom of X 3 of formula (II) when n is 0.

[0412] Particularly preferably, the formula (II) is lauryl methacrylate (LM, viscosity 6 cP) or lauryl acrylate (LA, viscosity: 4.0 cP) or isobornyl acrylate (IBOA).

[0413] It is considered that a higher amount of the (meth)acrylate monomer of Chemical Formula (II) compared to the total amount of the (meth)acrylate monomer of Chemical Formula (I) results in improved EQE of the composition, and from the viewpoints of the viscosity of the composition and better inkjet characteristics of the composition, a mixing weight ratio of the (meth)acrylate monomer of Chemical Formula (II) to the total amount of the (meth)acrylate monomer of Chemical Formula (I) greater than 50 wt.% is preferred.

[0414] Preferably, a (meth)acrylate monomer purified by using a silica column is used.

[0415] It is considered that removing impurities from the (meth)acrylate monomer by purification with a silica column results in improved QY of the semiconductor light-emitting nanoparticles in the composition.

[0416] - The (meth)acrylate monomer of Chemical Formula (III)

[0417] It is considered that the (meth)acrylate monomer of Chemical Formula (III) can be used to improve the curability of the resultant product made from the composition after inkjet printing.

[0418] According to the present invention, a known (meth)acrylate monomer represented by the following Chemical Formula (III) can be used to improve the curability of the layer after inkjet printing and crosslinking.

[0419] Very preferably, trimethylolpropane triacrylate (TMPTA) is used as the (meth)acrylate monomer of Chemical Formula (III).

[0420] In a preferred embodiment of the present invention, based on the total amount of the (meth)acrylate monomer in the composition, the amount of the (meth)acrylate monomer of Chemical Formula (III) is in the range of 0.001 wt.% to 25 wt.%, more preferably in the range of 0.1 wt.% to 15 wt.%, and even more preferably 1 wt.% to 10 wt.%.

[0421] Preferably, these (meth)acrylate monomers purified by using a silica column are used.

[0422] It is considered that removing impurities from the (meth)acrylate monomer by purification with a silica column results in improved QY of the semiconductor light-emitting nanoparticles in the composition.

[0423] - Further embodiments of the composition

[0424] - Other materials

[0425] According to the present invention, preferably, other materials including one or more members selected from the group consisting of;

[0426] Other light-emitting parts different from the light-emitting part of the present invention; scattering particles, antioxidants,

[0427] radical quenchers, photoinitiators, and surfactants. As the other materials, known materials can be used.

[0428] - Solvent

[0429] In a preferred embodiment of the present invention, the composition contains 10 wt% or less of a solvent based on the total amount of the composition, more preferably 5 wt% or less, and more preferably a solvent-free composition. Preferably, the composition does not contain any of the following solvents that are one or more members selected from the group consisting of: ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether; diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, and diethylene glycol dibutyl ether; propylene glycol monoalkyl ethers such as propylene glycol monomethyl ether (PGME), propylene glycol monoethyl ether, and propylene glycol monopropyl ether; ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; propylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate (PGMEA), propylene glycol monoethyl ether acetate, and propylene glycol monopropyl ether acetate; ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, triethylene glycol, and glycerol; esters such as ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, and ethyl lactate; and cyclic lactones (aster) such as γ-butyrolactone; chlorinated hydrocarbons such as chloroform, dichloromethane, chlorobenzene, trimethylbenzenes (such as 1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,3-trimethylbenzene), dodecylbenzene, cyclohexylbenzene, 1,2,3,4-tetramethylbenzene, 1,2,3,5-tetramethylbenzene, 3-isopropylbiphenyl, 3-methylbiphenyl, 4-methylbiphenyl, and dichlorobenzene. Preferably, the solvent is propylene glycol alkyl ether acetate, alkyl acetate, ethylene glycol monoalkyl ether, propylene glycol, and propylene glycol monoalkyl ether.

[0430] - Method for preparing the composition

[0431] On the other hand, the present invention also relates to a method for preparing a composition, which at least includes the following steps, consists essentially of the following steps, or consists of the following steps.

[0432] (a) Mixing a light-emitting part, at least one reactive monomer, or a mixture of two or more reactive monomers with a chemical compound represented by the following chemical formula (X a ) to form a composition.

[0433]

[0434] wherein the symbol R xa1 、R xa2 、R xa3 、R xa4 、Z xa 、Y xa- as defined in part “chemical compounds represented by the following chemical formula (X a ).”

[0435] Optionally, a thiol-containing chemical compound and / or a chemical compound as defined in the above parts “thiol-containing chemical compounds” and “mPEG thiol chemical compounds” are added in step (a). Optionally, one or more other materials as defined in the above part “other materials” may be added.

[0436] - The composition made by this method

[0437] In another aspect, the present invention further relates to a composition obtainable or obtained by the above method.

[0438] - Use

[0439] In another aspect, the present invention also relates to the use of the composition in an electronic device, an optical device, a sensing device, or in a biomedical device.

[0440] - Method for forming a layer

[0441] In another aspect, the present invention also relates to a method for forming a layer, which includes:

[0442] S1) Providing the composition onto a substrate, preferably by inkjet;

[0443] S2) Curing the composition, preferably the curing is photocuring, thermal curing, or a combination of photocuring and thermal curing carried out by light radiation.

[0444] - Layer

[0445] In another aspect, the present invention also relates to a layer obtainable or obtained by the method of the present invention.

[0446] In another aspect, the present invention also relates to a layer that at least contains, consists essentially of, or consists of the following items;

[0447] Xi) A light-emitting part, preferably a semiconductor light-emitting nanoparticle; details of the light-emitting part have been described above.

[0448] Xii) A polymer made of at least one reactive monomer or a mixture of two or more reactive monomers, preferably the monomer has one or more functional groups, and more preferably it is a (meth)acrylate monomer;

[0449] Xiii) A chemical compound represented by the following chemical formula (X a )

[0450] wherein the symbols R xa1 , R xa2 , R xa3 , R xa4 , Z xa , Y xa- are as defined in the section "Chemical compound represented by the following chemical formula (X a )".

[0451] Optionally, it includes a thiol-containing chemical compound and / or a chemical compound as defined in the above sections "Thiol-containing chemical compound" and "mPEG thiol chemical compound". Optionally, it includes one or more other materials as defined in the above section "Other materials".

[0452] - Color conversion device (100)

[0453] On the other hand, the present invention also relates to a color conversion device (100) which at least comprises the following items, consists essentially of the following items or consists of the following items; a first pixel (161) and a bank (150), the first pixel being partially or completely filled with a layer containing at least a matrix material (120) which contains a light-emitting part (110), the bank containing at least a polymer material, preferably the color conversion device (100) further contains a supporting medium (170).

[0454] - First pixel (161)

[0455] According to the present invention, the first pixel (161) at least comprises a matrix material (120) containing a light-emitting part (110). In a preferred embodiment, the first pixel (161) is a solid layer obtained or obtainable by curing a composition of the present invention containing at least one acrylate monomer together with at least one light-emitting part (110), preferably the curing is by photocuring, thermal curing or a combination of photocuring and thermal curing by light radiation.

[0456] In some embodiments of the present invention, the layer thickness of the pixel (161) is in the range of 0.1 to 100 μm, preferably it is 1 to 50 μm, more preferably 5 to 25 μm.

[0457] In some embodiments of the present invention, the color conversion device (100) further comprises a second pixel (162). Preferably, the device (100) comprises at least the first pixel (161), the second pixel (162) and the third pixel (163). More preferably, the first pixel (161) is a red pixel, the second pixel (162) is a green pixel and the third pixel (163) is a blue pixel. Even more preferably, the first pixel (161) comprises a red light-emitting portion (110R), the second color pixel (162) comprises a green light-emitting portion (110G) and the third pixel (163) does not comprise any light-emitting portion.

[0458] In some embodiments, at least one pixel (160) further comprises at least one light-scattering particle (130) in a matrix material (120). Preferably, the pixel (160) comprises a plurality of light-scattering particles (130).

[0459] In a preferred embodiment, the first pixel (161) consists of one pixel or two or more sub-pixels configured to emit red when irradiated with excitation light. More preferably, the sub-pixels comprise the same light-emitting portion (110).

[0460] - Matrix material (120)

[0461] In a preferred embodiment, the matrix material (120) comprises a (meth)acrylate polymer. Preferably, it is a methacrylate polymer, an acrylate polymer or a combination thereof. More preferably, it is an acrylate polymer. Even more preferably, the matrix material (120) is obtained or obtainable from the composition of the present invention containing at least one acrylate monomer. Further more preferably, the matrix material (120) is obtained or obtainable from the composition of the present invention containing at least one diacrylate monomer. Particularly preferably, the matrix material (120) is obtained or obtainable from the composition of the present invention containing at least one diacrylate monomer and one acrylate monomer. Preferably, the composition is a photosensitive composition.

[0462] - Dam (150)

[0463] In some embodiments of the present invention, the height of the dam (150) is in the range of 0.1 to 100 μm. Preferably, it is 1 to 50 μm, more preferably 1 to 25 μm, still more preferably 5 to 20 μm.

[0464] In a preferred embodiment of the present invention, the dam (150) is configured to define the area of the first pixel (161), and at least a part of the dam (150) is in direct contact with at least a part of the first pixel (161). Preferably, the second polymer of the dam (150) is in direct contact with at least a part of the first polymer of the first pixel (161).

[0465] More preferably, the dam (150) is lithographically patterned, and the first pixel (161) is surrounded by the dam (150). Preferably, the first pixel (161), the second pixel (162), and the third pixel (163) are all surrounded by the lithographically patterned dam (150).

[0466] - Method for manufacturing a color conversion device (100)

[0467] On the other hand, the present invention also relates to a method for manufacturing the color conversion device (100) of the present invention, which at least preferably comprises the following steps in this sequence;

[0468] Xi) Providing a dam composition onto the surface of a support medium

[0469] Xii) Curing the dam composition

[0470] Xiii) Applying lithographic patterning to the cured composition to produce dams and patterned pixel regions

[0471] Xiv) Providing the composition of the present invention to at least one pixel region, preferably by inkjet

[0472] Xv) Curing the composition. Preferably, the color conversion device (100) further comprises a support medium (170).

[0473] On the other hand, the present invention further relates to a color conversion device (100) obtainable or obtained by the method of the present invention.

[0474] On the other hand, the present invention further relates to the use of the color conversion device (100) of the present invention in an optical device (300), which optical device comprises at least one functional medium (320, 420, 520) configured to modulate light or configured to emit light.

[0475] - Optical device

[0476] Furthermore, on the other hand, the present invention further relates to an optical device (300) which at least comprises, consists essentially of, or consists of the following; a functional medium (320, 420, 520) configured to modulate light or configured to emit light, and a layer or color conversion device (100) of the present invention.

[0477] In some embodiments of the present invention, the optical device may be a liquid crystal display device (LCD), an organic light emitting diode (OLED), a light emitting diode device (LED), a micro-LED, a microelectromechanical system (hereinafter "MEMS"), an electrowetting display, or an electrophoretic display.

[0478] Thus, in a preferred embodiment, the functional medium may be an LC layer, an OLED layer, an LED layer, a micro-LED layer, a MEMS layer, an electro-wetting layer, and / or an electrophoretic layer. More preferably, it is an LC layer, a micro-LED layer, or an OLED layer.

[0479] - a light-emitting part having a semiconductor light-emitting material with a ligand derived from formula (X a )

[0480] In another aspect, the present invention may further relate to a light-emitting part, preferably a semiconductor light-emitting material as defined in this specification, which comprises a first ligand derived from a chemical compound represented by the following chemical formula (X a ) as defined in this specification. Optionally, the light-emitting part further contains a second ligand derived from a thiol-containing chemical compound represented by the chemical formula (P XA ) as defined in this specification. Also preferably, the light-emitting part further contains a chemical compound that comprises at least one group selected from the group consisting of: a straight-chain alkyl group having 1 to 80 carbon atoms or a branched-chain alkyl group having 3 to 80 carbon atoms, a straight-chain aryl-alkyl group having 5 to 45 carbon atoms, a branched-chain aryl-alkyl group having 6 to 45 carbon atoms, a straight-chain cycloalkyl group having 4 to 45 carbon atoms; and a branched-chain cycloalkyl group having 6 to 45 carbon atoms, wherein one or more non-adjacent CH2 groups in the above-mentioned groups are replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN, or NO2; preferably the molecular weight of the chemical compound is 2000 or less, more preferably 1000 or less, even more preferably 500 or less, and the molecular weight of the chemical compound is preferably 100 or more, more preferably 200 or more, even more preferably 300 or more, preferably the chemical compound further comprises one or more groups selected from the group consisting of: a phosphine group, a phosphine oxide group, a phosphate group, a phosphonate group, a thiol group, a tertiary amine, a carboxyl group, a heterocyclic group, a silyl group, a sulfonic acid, a hydroxyl group, a phosphonic acid, as defined in this specification. Optionally, the light-emitting part further comprises an outer layer containing a metal cation and a divalent anion; and

[0481] one or more types of organic moieties of an anion directly attached to the outer layer by a covalent bond,

[0482] wherein the divalent anion of the outer layer is selected from Se 2- , S 2- , Te 2- , O 2-or a combination of any of these, preferably the metal cation of the outer layer is a monovalent, divalent, trivalent or tetravalent cation, more preferably the metal cation is selected from the group consisting of Zn 2+ , Ni 2+ , Co 2+ , Ca 2+ , Sr 2+ , Hg 2+ , Mg 2+ and Pb 2+ and divalent cations of the group consisting of, or selected from the group consisting of Ti 4+ , Ge 4+ , Si 4+ , Zr 4+ , Hf 4+ and Sn 4+ and tetravalent cations of the group consisting of, as already defined in this specification. More details of the outer layer and the organic part are defined in this specification. The luminescent part can be used in the composition of the present invention and can also be included in the layer of the present invention in addition to or instead of the luminescent part of the composition of the present invention.

[0483] Preferred Embodiment

[0484] 1. A composition, preferably a photocurable composition, which at least comprises;

[0485] i) A luminescent part, preferably semiconductor luminescent nanoparticles,

[0486] ii) At least one reactive monomer or a mixture of two or more reactive monomers, preferably the monomer has one or more functional groups, more preferably it is a (meth)acrylate monomer; and

[0487] iii) A chemical compound represented by the following chemical formula (X a ).

[0488]

[0489] Where

[0490] R xa1 , R xa2 , R xa3 , R xa4Each independently selected from straight-chain alkyl groups having 1 to 25 carbon atoms, preferably 1 to 15 carbon atoms; branched or cyclic alkyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; straight-chain alkenyl or alkynyl groups having 2 to 25 carbon atoms, preferably 2 to 15 carbon atoms; branched alkenyl or alkynyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; aromatic or heteroaromatic ring systems having 5 to 25 aromatic ring atoms, preferably 5 to 15 aromatic ring atoms; each of which may be substituted by one or more groups R a substituted,

[0491] R a is, each time it appears, the same or different, H, D, a straight-chain alkyl or alkoxy group having 1 to 40 carbon atoms, preferably 1 to 25 carbon atoms, more preferably 1 to 15 carbon atoms; a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, preferably 3 to 25 carbon atoms, more preferably 3 to 15 carbon atoms; a straight-chain alkenyl or alkynyl group having 2 to 40 carbon atoms, preferably 2 to 24 carbon atoms, more preferably 2 to 12 carbon atoms; a branched alkenyl or alkynyl group having 3 to 40 carbon atoms, preferably 3 to 24 carbon atoms, more preferably 3 to 12 carbon atoms; an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, preferably 5 to 25 aromatic ring atoms, more preferably 5 to 18 aromatic ring atoms, wherein in each of the above groups, one or more H atoms may be replaced by D, F, Cl, Br, I, and wherein two or more adjacent substituents R a may optionally form a monocyclic or polycyclic aliphatic ring system with each other;

[0492] Z xa is N, P or As, preferably it is N or P, more preferably N;

[0493] Y xa- is a monovalent anion containing a halogen, preferably selected from the group consisting of F - , Cl - , Br - , I - , At - , Ts - , BF 4- , PF 6- ; more preferably it is F - , Cl - , Br - , I - , BF 4- , PF 6- ; even more preferably it is Br - , F - , Cl - ; still preferably it is Br- 。

[0494] 2. The composition according to embodiment 1, wherein in the chemical formula (X a ), R xa1 , R xa2 , R xa3 , R xa4 are each independently selected from straight-chain alkyl groups having 1-25 carbon atoms, preferably 1 to 15 carbon atoms; branched-chain or cyclic alkyl groups having 3-25 carbon atoms, preferably 3-15 carbon atoms; straight-chain alkenyl or alkynyl groups having 2 to 25 carbon atoms, preferably 2 to 15 carbon atoms; branched-chain alkenyl or alkynyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; each of which may be substituted by one or more groups R a , more preferably R xa1 , R xa2 , R xa3 , R xa4 are each independently selected from straight-chain alkyl groups having 1-25 carbon atoms, preferably 1 to 15 carbon atoms; branched-chain alkyl groups having 3-25 carbon atoms, preferably 3-15 carbon atoms; each of which may be substituted by one or more groups R a ;

[0495] Z xa is N, P or As, preferably it is N or P, more preferably N;

[0496] Y xa- is a monovalent anion containing a halogen, preferably it is selected from the group consisting of F - , Cl - , Br - , I - , At - , Ts - , BF 4- , PF 6- , more preferably it is F - , Cl - , Br - , I - , BF 4- , PF 6- , even more preferably it is Br - , F - , Cl - , still preferably it is Br - 。

[0497] 3. The composition according to embodiment 1 or 2, wherein, based on the total amount of the composition in the absence of solvent, the chemical formula (X aThe total amount of the chemical compound is in the range of 0.001 wt% to 2.0 wt%, preferably in the range of 0.01 wt% to 1.9 wt%, more preferably 0.02 wt% to 1.8 wt%, even more preferably 0.03 wt% to 1.6 wt%, still preferably 0.04 wt% to 1.4 wt%.

[0498] 4. The composition according to any one of embodiments 1 to 3, which further comprises a thiol-containing chemical compound. Preferably, based on the total amount of the composition in the absence of solvent, the total amount of the thiol-containing chemical compound is in the range of 0.1 wt% to 20 wt%, more preferably it is 1 wt% to 15 wt%, even more preferably it is 5 wt% to 10 wt%. Preferably, it is represented by the following chemical formula (P XA )

[0499] R xa1 -SH (P XA )

[0500] where

[0501] R xa1 is selected from straight-chain alkyl groups having 1 to 40 carbon atoms, preferably 5 to 30 carbon atoms; branched or cyclic alkyl groups having 3 to 40 carbon atoms, preferably 5 to 30 carbon atoms; straight-chain alkenyl or alkynyl groups having 2 to 40 carbon atoms, preferably 5 to 30 carbon atoms; branched alkenyl or alkynyl groups having 3 to 40 carbon atoms, preferably 5 to 30 carbon atoms; aromatic or heteroaromatic ring systems having 5 to 40 aromatic ring atoms, preferably 5 to 30 aromatic ring atoms; where each may be substituted by one or more groups R a substituted,

[0502] R a is the same or different each time it appears and is H, D, a straight-chain alkyl or alkoxy group having 1 to 40 carbon atoms, preferably 1 to 25 carbon atoms, more preferably 1 to 15 carbon atoms; a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, preferably 3 to 25 carbon atoms, more preferably 3 to 15 carbon atoms; a straight-chain alkenyl or alkynyl group having 2 to 40 carbon atoms, preferably 2 to 24 carbon atoms, more preferably 2 to 12 carbon atoms; a branched alkenyl or alkynyl group having 3 to 40 carbon atoms, preferably 3 to 24 carbon atoms, more preferably 3 to 12 carbon atoms; an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, preferably 5 to 25 aromatic ring atoms, more preferably 5 to 18 aromatic ring atoms, where in each of the above groups, one or more H atoms may be replaced by D, F, Cl, Br, I, and where two or more adjacent substituents R aOptionally, they can form a single-ring or multi-ring aliphatic ring system with each other. Preferably, based on the total amount of the composition in the absence of solvent, the total amount of the chemical compound of formula (X a ) in Embodiment 3 and the total amount of the thiol-containing chemical compound in Embodiment 4 are in the range of 0.1 wt% to 20 wt%, more preferably it is 1 wt% to 15 wt%, and even more preferably it is 5 wt% to 10 wt%.

[0503] 5. The composition according to any one of Embodiments 1 to 4, further comprising a chemical compound comprising at least one group selected from the group consisting of: a straight-chain alkyl group having 1 to 80 carbon atoms or a branched-chain alkyl group having 3 to 80 carbon atoms, a straight-chain aryl-alkyl group having 5 to 45 carbon atoms, a branched-chain aryl-alkyl group having 6 to 45 carbon atoms, a straight-chain cycloalkyl group having 4 to 45 carbon atoms; and a branched-chain cycloalkyl group having 6 to 45 carbon atoms, wherein one or more non-adjacent CH2 groups in the above-mentioned groups are replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; preferably the molecular weight of the chemical compound is 2000 or less, more preferably 1000 or less, even more preferably 500 or less, and the molecular weight of the chemical compound is preferably 100 or more, more preferably 200 or more, even more preferably 300 or more, preferably the chemical compound further comprises at least one group selected from one or more members of the group consisting of: a phosphine group, a phosphine oxide group, a phosphate group, a phosphonate group, a thiol group, a tertiary amine, a carboxyl group, a heterocyclic group, a silyl group, a sulfonic acid, a hydroxyl group, a phosphonic acid.

[0504] 6. The composition according to any one of Embodiments 1 to 5, wherein the light-emitting part comprises an outer layer containing a metal cation and a divalent anion; and

[0505] one or more types of organic moieties of anions directly attached to the outer layer by covalent bonds,

[0506] wherein the divalent anion of the outer layer is selected from Se 2- , S 2- , Te 2- , O 2- or a combination of any of these, preferably the metal cation of the outer layer is a monovalent, divalent, trivalent or tetravalent cation, more preferably the metal cation is selected from the group consisting of Zn 2+ , Ni 2+ , Co 2+ , Ca 2+, Sr 2+ , Hg 2+ , Mg 2+ and Pb 2+ divalent cations of the group consisting of, or selected from Ti 4+ , Ge 4+ , Si 4+ , Zr 4+ , Hf 4+ and Sn 4+ tetravalent cations of the group consisting of.

[0507] 7. The composition according to embodiment 6, wherein the organic part is represented by the following chemical formula (I);

[0508] A - B - *(I)

[0509] wherein

[0510] A is an organic group, preferably the organic group is a hydrocarbon group (alkyl, aryl, aralkyl and alkylaryl), a heteroaromatic group (including aryl, alkaryl, alkyl or aralkyl), an alkylamine, a fluoroaryl, a fluoroalkaryl, a fluoroalkyl, a fluoroaralkyl, a heteroaromatic group (including fluoroaryl, fluoroalkaryl, fluoroalkyl or fluoroaralkyl);

[0511] B is a linking unit, preferably B is **-(U) o -(Y) m -(CR IIa R IIb ) n , where "**" represents the point of attachment to "A"; and

[0512] "*" represents the point of attachment to the anion in the outer layer.

[0513] 8. The composition according to embodiment 6 or 7, wherein the organic part is represented by the following chemical formula (II), (III) or (III');

[0514] L-(U) o -(Y) m -(CR IIa R IIb ) n -*(II)

[0515] wherein

[0516] L is an organic group, preferably the organic group is a hydrocarbon group (alkyl, aryl, aralkyl and alkylaryl), a heteroaromatic group (including aryl, alkaryl, alkyl or aralkyl), an alkylamine, a fluoroaryl, a fluoroalkaryl, a fluoroalkyl, a fluoroaralkyl, a heteroaromatic group (including fluoroaryl, fluoroalkaryl, fluoroalkyl or fluoroaralkyl);

[0517] U is O, CH2 or C=O;

[0518] Y is O, CH2 or C=O;

[0519] R IIa and R IIb are each independently selected from a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 10 carbon atoms, and a branched-chain alkyl group having 3 to 10 carbon atoms each time they appear; preferably a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 5 carbon atoms, and a branched-chain alkyl group having 3 to 5 carbon atoms; preferably R IIa and R IIb are hydrogen atoms;

[0520] n is an integer of 1 or greater;

[0521] m is 0 or 1 or an integer greater than 1, preferably m is 1;

[0522] o is 0 or 1 or an integer greater than 1, preferably o is 1;

[0523] "*" represents the point of attachment to the anion in the outer layer;

[0524] *-(CR IIIe R IIIf ) a -(OCR IIIa R IIIb CR IIIc R IIId p -(V) r -(CR IIIg R IIIh ) q -Z (III)

[0525] *-(CR IIIg R IIIh ) q -(V) r -(OCR IIIa R IIIb CR IIIc R IIId ) p -Z (III′)

[0526] wherein

[0527] R IIIa 、R IIIb 、R IIIc 、R IIId 、R IIIe 、R IIIf 、R IIIg and R IIIhEach independently selected from a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 10 carbon atoms, and a branched-chain alkyl group having 3 to 10 carbon atoms each time it appears; preferably a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 5 carbon atoms, and a branched-chain alkyl group having 3 to 5 carbon atoms; preferably R IIIg and R IIIh is a hydrogen atom, preferably R IIIe and R IIIf is a hydrogen atom; V is O, CH2 or C=O;

[0528] Z is a hydrogen atom or an organic group, preferably Z is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, a branched-chain alkyl group having 3 to 25 carbon atoms, -COOH, -SH, or -NH2, an alkylamine, a fluoroaryl group, a fluoroalkylaryl group, a fluoroalkyl group, a fluoroarylalkyl group, a heteroaromatic group (including a fluoroaryl group, a fluoroalkylaryl group, a fluoroalkyl group or a fluoroarylalkyl group), preferably Z is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, a branched-chain alkyl group having 3 to 25 carbon atoms, more preferably it is a hydrogen atom, a straight-chain alkyl group having 1-15 carbon atoms, a branched-chain alkyl group having 3-15 carbon atoms, even more preferably it is a hydrogen atom, or a straight-chain alkyl group having 1-10 carbon atoms;

[0529] a is an integer of 0 or 1 or greater, preferably 0≤a≤25, more preferably 0≤a≤15, even more preferably 1≤a≤10;

[0530] p is an integer of 0 or 1 or greater, preferably 0≤p≤45, more preferably 0≤p≤25, even more preferably 1≤p≤20, also preferably 4≤p≤18;

[0531] q is an integer of 0 or 1 or greater, preferably 0≤q≤25, more preferably 0≤q≤15, even more preferably 0≤q≤10, also preferably it is 1≤q≤5;

[0532] r is 0 or the integer 1;

[0533] "*" represents the connection point with the anion in the outer layer.

[0534] 9. The composition according to any one of embodiments 6 to 8, wherein the organic part is represented by the following chemical formula (IV):

[0535] *-(CR IIIe R IIIf ) a -(OCR IIIa R IIIb CR IIIc R IIId p -(V) r -(CR IIIgR IIIh ) q -Z′(IV)

[0536] wherein

[0537] R IIIa 、R IIIb 、R IIIc 、R IIId 、R IIIe 、R IIIf 、R IIIg and R IIIh are each independently selected from a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 10 carbon atoms, and a branched-chain alkyl group having 3 to 10 carbon atoms each time they appear; preferably a hydrogen atom, a hydroxyl group, a straight-chain alkyl group having 1 to 5 carbon atoms, and a branched-chain alkyl group having 3 to 5 carbon atoms; preferably R IIIg and R IIIh are hydrogen atoms, preferably R IIIe and R IIIf are hydrogen atoms;

[0538] a is an integer of 0 or 1 or greater, preferably 0 ≤ a ≤ 25, more preferably 0 ≤ a ≤ 15, even more preferably 1 ≤ a ≤ 10;

[0539] p is an integer of 0 or 1 or greater, preferably 0 ≤ p ≤ 45, more preferably 0 ≤ p ≤ 25, even more preferably 1 ≤ p ≤ 20, still preferably 4 ≤ p ≤ 18;

[0540] q is an integer of 0 or 1 or greater, preferably 0 ≤ q ≤ 25, more preferably 0 ≤ q ≤ 15, even more preferably 0 ≤ q ≤ 10, still preferably it is 1;

[0541] V is O, CH2 or C=O;

[0542] Z′ is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, a branched-chain alkyl group having 3 to 25 carbon atoms, an alkylamine, a fluoroaryl group, a fluoroalkylaryl group, a fluoroalkyl group, a fluoroarylalkyl group, a heteroaromatic group (including a fluoroaryl group, a fluoroalkylaryl group, a fluoroalkyl group or a fluoroarylalkyl group), preferably Z′ is a straight-chain alkyl group having 1 to 25 carbon atoms, a branched-chain alkyl group having 3 to 25 carbon atoms or a hydrogen atom, more preferably it is a straight-chain alkyl group having 1-15 carbon atoms, a branched-chain alkyl group having 3-15 carbon atoms or a hydrogen atom, even more preferably it is a hydrogen atom;

[0543] r is 0 or the integer 1;

[0544] “*” represents the point of attachment to the anion in the outer layer, preferably it is attached to the S or Se atom in the outer layer.

[0545] 10. A composition as described in any one of the foregoing embodiments, wherein the organic moiety is covalently bonded to an anion in the outer layer of the inorganic lattice, preferably it is not removed by ligand exchange.

[0546] 11. A composition as described in any one of the foregoing embodiments, wherein the metal cation is a transition metal of Group 12 or Group 14, preferably selected from one or more members of the group consisting of 2+ Zn 2+ Hg 2+ or Pb.

[0547] 12. A composition as described in any one of the foregoing embodiments, wherein the reactive monomer is a (meth)acrylate monomer selected from mono-(meth)acrylate monomers, di-(meth)acrylate monomers and / or tri-(meth)acrylate monomers.

[0548] Preferably, the two or more reactive monomers of the mixture are each independently selected from mono-(meth)acrylate monomers, di-(meth)acrylate monomers and / or tri-(meth)acrylate monomers.

[0549] 13. The composition according to embodiment 12, wherein the di-(meth)acrylate monomer is represented by the following chemical formula (I b ), the monoacrylate monomer is represented by the following chemical formula (II b ) and / or the tri-(meth)acrylate monomer is represented by the following chemical formula (III b );

[0550]

[0551] wherein

[0552] X 1 is an ester group, an alkyl group or an aryl group, wherein one or more non-adjacent CH2 groups, alkyl groups or aryl groups of the ester can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2;

[0553] Preferably, the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms;

[0554] Preferably, the ester group is represented by the following formula (I bs1 );

[0555]

[0556] wherein R Ib1is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms;

[0557] R Ib2 is a single bond, an unsubstituted or substituted straight-chain alkylene chain having 1 to 5 carbon atoms, an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein one or more non-adjacent CH2 groups may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; preferably R Ib2 is an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein at least one of the non-adjacent CH2 groups may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0558] X 2 is an ester group, an alkyl or an aryl, wherein one or more non-adjacent CH2 groups of the ester, the alkyl or the aryl may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; preferably the alkyl has 1 to 45 carbon atoms, preferably the aryl has 3 to 45 carbon atoms;

[0559] Preferably the ester group is represented by the following formula (I bs2 );

[0560]

[0561] wherein R Ibs1 is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms;

[0562] R Ibs2 is a single bond, an unsubstituted or substituted straight-chain alkylene chain having 1 to 5 carbon atoms, an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein one or more non-adjacent CH2 groups may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; preferably R Ib2is an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein at least one of the non-adjacent CH2 groups can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2;

[0563] R 1 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, wherein one or more non-adjacent CH2 groups of the alkyl or aryl group can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; or X 1 is an ester group; preferably the ester group is a carboxylic acid group; preferably the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms;

[0564] R 2 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, wherein one or more non-adjacent CH2 groups of the alkyl or aryl group can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; or X 1 is an ester group; preferably the ester group is a carboxylic acid group; preferably the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms;

[0565]

[0566] R 5 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, an alkoxy group, an ester group, or a carboxylic acid group;

[0567] X 3 is an ester group, an alkyl group, a cycloalkyl group, an aryl group or an alkoxy group, in the case of X 3 is an ester group, the ester group is represented by the following formula (II bs );

[0568]

[0569] wherein R IIb1 is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms;

[0570] R IIb2is a substituted or unsubstituted alkyl, cyclo group, cycloalkyl, aryl or alkoxy group;

[0571] Preferably the symbol X 3 is

[0572] wherein the "*" on the left side of the formula represents the point of attachment to the terminal C═CR of formula (I) 5 ;

[0573] l is 0 or 1;

[0574] R 6 is a straight-chain alkylene chain or alkoxy chain having 1 to 25 carbon atoms, preferably R 6 is a straight-chain alkylene chain or alkoxy chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms,

[0575] which may be substituted by one or more groups R a wherein one or more non-adjacent CH2 groups may be replaced by R a C═CR a 、C≡C、Si(R a )2、Ge(R a )2、Sn(R a )2、C═O、C═S、C═Se、C═NR a 、P(═O)(R a )、SO、SO2、NR a 、OS、 or CONR a ; and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0576] R 7 is a straight-chain alkylene chain or alkoxy chain having 1 to 25 carbon atoms, preferably R 7 is a straight-chain alkylene chain or alkoxy chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms,

[0577] which may be substituted by one or more groups R a wherein one or more non-adjacent CH2 groups may be replaced by R a C═CR a 、C≡C、Si(R a )2、Ge(R a )2、Sn(R a )2、C═O、C═S、C═Se、C═NR a 、P(═O)(R a )、SO、SO2、NR a 、OS、 or CONR aAlternatively, one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2;

[0578] R a is, each time it appears, the same or different and is H, D or an alkyl group having 1 to 20 carbon atoms, a cycloalkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a heteroaromatic ring system having 5 to 60 carbon atoms, where the H atoms may be replaced by D, F, Cl, Br, I; here two or more adjacent substituents R a may also form a monocyclic or polycyclic, aliphatic, aromatic or heteroaromatic ring system with each other;

[0579]

[0580] wherein R 9 is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms or a (meth)acryloyl group represented by the chemical formula (IV b )

[0581]

[0582] R 10 is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms or a (meth)acryloyl group represented by the chemical formula (V b )

[0583]

[0584] R 11 is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms or a (meth)acryloyl group represented by the chemical formula (VI b )

[0585]

[0586] wherein R 8 , R 8a , R 8b and R 8c are, each time they appear, each independently of or dependently on one another, H, CH2CH3 or CH3;

[0587] wherein at least one of R 9 , R 10 and R 11 is a (meth)acryloyl group, preferably R 9 , R 10 and R 11Two of them are (meth)acryloyl groups, and the other is a hydrogen atom or a linear alkyl group having 1 to 25 carbon atoms. Preferably, the conductivity (S / cm) of the (meth)acrylate monomer of formula (III) is 1.0*10 -10 or less, preferably it is 5.0*10 -11 or less, more preferably it is in the range of 5.0*10 -11 to 1.0*10 -15 and even more preferably it is in the range of 5.0*10 -12 to 1.0*10 -15 .

[0588] 14. The composition according to any one of the foregoing embodiments, wherein the total amount of the light-emitting portion is in the range of 0.1 wt.% to 90 wt.%, preferably 10 wt.% to 70 wt.%, more preferably 30 wt.% to 50 wt.%, based on the total amount of the composition.

[0589] 15. The composition according to any one of the foregoing embodiments, which comprises one or more members selected from the group consisting of;

[0590] other light-emitting portions different from the light-emitting portion as described in Embodiment 1; scattering particles, antioxidants, radical quenchers, photoinitiators, and surfactants.

[0591] 16. A composition according to any one of the foregoing embodiments, wherein the composition comprises 10 wt% or less of a solvent, based on the total amount of the composition, more preferably 5 wt% or less, more preferably a solvent-free composition, preferably the composition does not contain any of the following solvents selected from one or more members of the group consisting of: ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether and ethylene glycol monobutyl ether; diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether and diethylene glycol dibutyl ether; propylene glycol monoalkyl ethers such as propylene glycol monomethyl ether (PGME), propylene glycol monoethyl ether and propylene glycol monopropyl ether; ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; propylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate (PGMEA), propylene glycol monoethyl ether acetate and propylene glycol monopropyl ether acetate; ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone and cyclohexanone; alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, triethylene glycol and glycerol; esters such as ethyl 3-ethoxypropionate, methyl 3-methoxypropionate and ethyl lactate; and cyclic lactones such as γ-butyrolactone; chlorinated hydrocarbons such as chloroform, dichloromethane, chlorobenzene, trimethylbenzenes (such as 1,3,5-trimethylbenzene, 1,2,4-trimethylbenzene, 1,2,3-trimethylbenzene), dodecylbenzene, cyclohexylbenzene, 1,2,3,4-tetramethylbenzene, 1,2,3,5-tetramethylbenzene, 3-isopropylbiphenyl, 3-methylbiphenyl, 4-methylbiphenyl and dichlorobenzene, preferably the solvent is propylene glycol alkyl ether acetate, alkyl acetate, ethylene glycol monoalkyl ether, propylene glycol and propylene glycol monoalkyl ether.

[0592] 17. A method for preparing a composition according to any one of the foregoing embodiments, which at least comprises the following steps,

[0593] (a) Mixing a light-emitting part, at least one reactive monomer or a mixture of two or more reactive monomers with a chemical compound represented by the following chemical formula (X a ) to form a composition.

[0594]

[0595] wherein the symbols R xa1 , R xa2 , R xa3 , R xa4 , Z xa , Y xa- are as defined in Embodiment 1.

[0596] Optionally, a thiol-containing chemical compound and / or a chemical compound as defined in any one of embodiments 4 to 6 is added in step (a), preferably the thiol-containing chemical compound is represented by the chemical formula (P XA ) as defined in embodiment 4.

[0597] 18. A composition obtainable or obtained by the method as described in embodiment 17.

[0598] 19. Use of the composition as described in any one of embodiments 1 to 16, 18 in an electronic device, an optical device, a sensing device or in a biomedical device.

[0599] 20. A method for forming a layer, comprising:

[0600] S1) Providing the composition as described in any one of embodiments 1 to 16 or 18 onto a substrate, preferably by inkjet;

[0601] S2) Curing the composition or the formulation, preferably the curing is photocuring, thermocuring or a combination of photocuring and thermocuring carried out by light radiation.

[0602] 21. A layer obtainable or obtained by the method as described in embodiment 20.

[0603] 22. A layer containing at least;

[0604] Xi) A light-emitting part, preferably which is semiconductor light-emitting nanoparticles;

[0605] Xii) A polymer made of at least one reactive monomer or a mixture of two or more reactive monomers, preferably the monomer has one or more functional groups, more preferably it is a (meth)acrylate monomer;

[0606] Xiii) A chemical compound represented by the following chemical formula (X a )

[0607] wherein the symbols R xa1 , R xa2 , R xa3 , R xa4 , Z xa , Y xa- are as defined in embodiment 1 or 2.

[0608] 23. A color conversion device (100) comprising at least a first pixel (161) and a dam (150), said first pixel being partially or completely filled with a layer as described in embodiment 21 or 22 comprising at least a matrix material (120), said matrix material containing a light-emitting part (110), said dam comprising at least a polymer material, preferably said color conversion device (100) further comprising a support medium (170).

[0609] 24. An optical device (300) comprising at least one functional medium (320, 420, 520) configured to modulate light or configured to emit light; and a layer as described in embodiment 21 or 22 or a color conversion device (100) as described in embodiment 23.

[0610] 25. A light-emitting part, preferably a semiconductor light-emitting part as defined in this specification, comprising a first ligand derived from a chemical compound represented by the following chemical formula (X a ) as defined in this specification. Optionally, said light-emitting part further contains a second ligand derived from a thiol-containing chemical compound represented by the chemical formula (P XA ) as defined in this specification. More preferably, said light-emitting part further contains a chemical compound, said chemical compound comprising at least one group selected from the group consisting of: a straight-chain alkyl group having 1 to 80 carbon atoms or a branched-chain alkyl group having 3 to 80 carbon atoms, a straight-chain aryl-alkyl group having 5 to 45 carbon atoms, a branched-chain aryl-alkyl group having 6 to 45 carbon atoms, a straight-chain cycloalkyl group having 4 to 45 carbon atoms; and a branched-chain cycloalkyl group having 6 to 45 carbon atoms, wherein one or more non-adjacent CH2 groups in the above-mentioned groups are replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; preferably the molecular weight of said chemical compound is 2000 or less, more preferably 1000 or less, even more preferably 500 or less, and the molecular weight of said chemical compound is preferably 100 or more, more preferably 200 or more, even more preferably 300 or more, preferably said chemical compound further comprises at least one group selected from the group consisting of one or more members of the following: a phosphine group, a phosphine oxide group, a phosphate group, a phosphonate group, a thiol group, a tertiary amine, a carboxyl group, a heterocyclic group, a silyl group, a sulfonic acid, a hydroxyl group, a phosphonic acid, as defined in this specification. Optionally, said light-emitting part further comprises an outer layer containing a metal cation and a divalent anion; and

[0611] one or more types of organic moieties of anions directly attached to said outer layer by covalent bonds,

[0612] wherein the divalent anion of the outer layer is selected from Se 2- , S 2- , Te 2- , O 2- or a combination of any of these, preferably the metal cation of the outer layer is a monovalent, divalent, trivalent or tetravalent cation, more preferably the metal cation is a divalent cation selected from the group consisting of Zn 2+ , Ni 2+ , Co 2+ , Ca 2+ , Sr 2+ , Hg 2+ , Mg 2+ and Pb 2+ , or a tetravalent cation selected from the group consisting of Ti 4+ , Ge 4+ , Si 4+ , Zr 4+ , Hf 4+ and Sn 4+ , as already defined in this specification. More details of the outer layer and the organic part are defined in this specification.

[0613] Technical Effect

[0614] The present invention provides one or more of the following effects;

[0615] The composition containing the light-emitting part has no color change under air conditions, improved thermal stability of the obtained layer (film), improved thermal stability of the light-emitting part in the layer (film), improved dispersibility of the light-emitting part in the composition, the ability to achieve phase separation of the light-emitting part and the matrix material after curing, improved haze value of the cured film (cured composition), improved dispersibility of the light-emitting part in the obtained layer, improved long-term quantum yield (QY) stability of the light-emitting part in the composition during longer-term storage with or without external light radiation, improved long-term external quantum efficiency (EQE) stability of the light-emitting part in the composition during longer-term storage with or without external light radiation, improved long-term quantum yield (QY) stability of the light-emitting part in the obtained layer (film) during longer-term storage with or without external light radiation, improved long-term external quantum efficiency (EQE) stability of the light-emitting part in the obtained layer (film) during longer-term storage with or without external light radiation, improved good compatibility between the light-emitting part and the matrix material in the composition and / or the obtained layer (film), and / or the ease of handling of the composition containing the light-emitting part and the matrix material, making the composition suitable for inkjet printing.

[0616] The following core and shell synthesis examples, reference examples, and working examples provide a description of the present invention, as well as a detailed description of their manufacture. However, the present invention need not be limited to the working examples.

[0617] Working Example

[0618] ODT = 1-octadecanethiol

[0619] TBAB = tetrabutylammonium bromide

[0620] LA = lauryl acrylate

[0621] HDDA = 1,6-hexanediol diacrylate

[0622] QD = quantum dot

[0623] PI = photoinitiator

[0624] AO = antioxidant

[0625] Working Example 1: Preparation of Red QD Ink 1

[0626] The red-emitting InP / ZnSe / ZnS QD (PWL628nm) with mPEG thiol as a ligand dispersed in PGMEA was mixed with ODT and TBAB at 80 °C in reflux for about 90 min.

[0627] Then, the monomer mixture of LA and HDDA, as well as PI and AO, were added as shown in Table 1.

[0628] The formulation was shaken for 10 minutes and the volatiles were evaporated on a rotary evaporator under vacuum at 25 °C. The remaining volatiles were removed under a vacuum of 60 mTorr on a Schlenk line. Then, Red QD Ink 1 was obtained.

[0629] Table 1:

[0630]

[0631]

[0632] Comparative Example 1: Preparation of Comparative Red QD Ink 1

[0633] The Comparative Red QD Ink 1 was manufactured in the same manner as described in Working Example 1, except that the following materials shown in Table 2 were used instead of the materials used in Working Example 1.

[0634] Table 2:

[0635]

[0636] Working Examples 2 - 4: Preparation of Red QD Inks 2 to 4

[0637] The red QD inks 2 to 4 (corresponding to Working Examples 2 to 4) were obtained in the same manner as described in Working Example 4, except that ODT and TBAB were added at different ratios as shown in Table 3.

[0638] Table 3:

[0639]

[0640]

[0641] Working Example 5: Film Formation:

[0642] The films were formed by filling a glass sandwich cell (gap approximately 10 μm) with the QD ink described in the previous examples. The films were cured by exposure to UV light (300 mW / cm 2 , for 10 s). The cells were then opened, yielding open films deposited in one of the glasses of the cells.

[0643] The open films were heated (thermal annealing) at 180 °C for 30 minutes in an inert atmosphere. After thermal annealing, the films were stored in a humidity control chamber at 25 °C and 45% relative humidity (RH).

[0644] Working Example 6: EQE Measurement, BL Calculation and PWL, FWHM Measurement The EQE values were measured 1 h after thermal annealing, as indicated in Table 4 below.

[0645] EQE = photons [emitted light] / photons [excitation light measured with the sample not in place];

[0646] According to the present invention, the EQE is measured at room temperature by the following EQE measurement method, which is based on the use of an integrating sphere equipped with a 450 nm excitation light source coupled via an optical fiber and a spectrometer (Compass X, BWTEK), and which consists of: a first measurement using air as a reference to detect the incident photons of the excitation light, and a second measurement placing the sample or test cell in front of the integrating sphere between the integrating sphere opening and the optical fiber exit to detect the incident photons transmitted through the sample from the excitation light source and the photons emitted from the sample or test cell. However, for both cases, the photons leaving the integrating sphere are counted by the spectrometer, and the EQE and BL calculations are performed with the following equations, and the photon numbers of the excitation light and the emitted light are calculated by integrating over the following wavelength ranges;

[0647] EQE = photons [emitted light] / photons [excitation light measured with the sample not in place];

[0648] BL = Photon [excitation light measured with the sample in place] / Photon [excitation light measured with the sample not in place];

[0649] If the red light-emitting part is used, the emitted light: 580 nm - 780 nm

[0650] Excitation light: 390 nm - 490 nm. At the same time, the PWL and FWHM values of the test chamber were also measured. Table 4 shows these results.

[0651] Table 4:

[0652] Comparison QD Ink 1 QD Ink 2 QD Ink 3 QD Ink 4 EQE 36.4％ 36.0％ 36.2％ 36.3％ 36.4％ BL 8.3％ 11.2％ 10.3％ 10.1％ 9.3％ PWL 638.3 nm 638.3 nm 638.3 nm 638.3 nm 638.6 nm FWHM 35.6 nm 35.5 nm 35.5 nm 35.5 nm 35.4 nm

[0653] Working Example 7: Observation Results of Color Change of QD Ink under Air

[0654] The obtained QD inks 1 to 4 and the comparative QD ink 1 were each separately dropped onto different glass plates. The color changes of the dropped QD inks were examined by the human eye at 0 min, 5 min, and 20 min under air conditions at room temperature. Table 5 shows these results.

[0655] Table 5:

[0656] Comparison QD Ink 1 QD Ink 2 QD Ink 3 QD Ink 4 Color Change NG OK OK OK OK

[0657] In the table, "NG" means that a color change of the dropped QD ink was observed under air conditions, and "OK" means that no color change of the dropped QD ink was observed.

[0658] Results

[0659] The red QD inks of Working Examples 1 to 4 did not show a color change, while the comparative red QD ink from Comparative Example 1 showed a significant color change from red to light pink. Therefore, the color change was solved by adding TBAB.

[0660] Working Example 8: Preparation of Red QD Ink 5

[0661] Red QD ink 5 was manufactured in the same manner as described in Working Example 3 (red QD ink 3), except that two types of red light-emitting InP / ZnSe / ZnS QDs (red QD with PWL 617 nm: red QD with PWL 629 nm, mixing ratio 4:6) dispersed in PGMEA with mPEG thiol as a ligand were used instead of the red QD used in Working Example 3.

[0662] Table 6:

[0663]

[0664] Table 7 shows the results of measurements carried out in the same manner as described in Working Examples 5 to 7.

[0665] QD Ink 5 EQE 34.8％ BL 9.4％ PWL 636.9 nm FWHM 40.0 nm Color Change OK

Claims

1. A composition, preferably a photocurable composition, which comprises at least; i) a light-emitting moiety, preferably a semiconductor light-emitting nanoparticle, ii) at least one reactive monomer or a mixture of two or more reactive monomers, preferably the monomer has one or more functional groups, more preferably it is a (meth)acrylate monomer; and iii) a chemical compound represented by the following chemical formula (X a ); wherein R xa1 、R xa2 、R xa3 、R xa4 are each independently selected from straight-chain alkyl groups having 1 to 25 carbon atoms, preferably 1 to 15 carbon atoms; branched or cyclic alkyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; straight-chain alkenyl or alkynyl groups having 2 to 25 carbon atoms, preferably 2 to 15 carbon atoms; branched alkenyl or alkynyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; aromatic or heteroaromatic ring systems having 5 to 25 aromatic ring atoms, preferably 5 to 15 aromatic ring atoms; where each may be substituted by one or more groups R a substituted, R a is, each time it occurs, the same or different and is H, D, a straight-chain alkyl or alkoxy group having 1 to 40 carbon atoms, preferably 1 to 25 carbon atoms, more preferably 1 to 15 carbon atoms; a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, preferably 3 to 25 carbon atoms, more preferably 3 to 15 carbon atoms; a straight-chain alkenyl or alkynyl group having 2 to 40 carbon atoms, preferably 2 to 24 carbon atoms, more preferably 2 to 12 carbon atoms; a branched alkenyl or alkynyl group having 3 to 40 carbon atoms, preferably 3 to 24 carbon atoms, more preferably 3 to 12 carbon atoms; an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, preferably 5 to 25 aromatic ring atoms, more preferably 5 to 18 aromatic ring atoms, where in each of the above groups, one or more H atoms may be replaced by D, F, Cl, Br, I, and where two or more adjacent substituents R a may optionally form, with each other, a monocyclic or polycyclic aliphatic ring system; Z xa is N, P or As, preferably it is N or P, more preferably N; Y xa- is a monovalent anion containing a halogen, preferably selected from the group consisting of F - , Cl - , Br - , I - , At - , Ts - , BF 4- , PF 6- , and more preferably it is F - , Cl - , Br - , I - , BF 4- , PF 6- , even more preferably it is Br - , F - , Cl - , still preferably it is Br - .

2. The composition according to claim 1, wherein The R in the chemical formula (X a ) xa1 , R xa2 , R xa3 , R xa4 are each independently selected from straight-chain alkyl groups having 1 to 25 carbon atoms, preferably 1 to 15 carbon atoms; branched or cyclic alkyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; straight-chain alkenyl or alkynyl groups having 2 to 25 carbon atoms, preferably 2 to 15 carbon atoms; branched alkenyl or alkynyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; each of which may be substituted by one or more groups R a ; more preferably, R xa1 , R xa2 , R xa3 , R xa4 are each independently selected from straight-chain alkyl groups having 1 to 25 carbon atoms, preferably 1 to 15 carbon atoms; branched alkyl groups having 3 to 25 carbon atoms, preferably 3 to 15 carbon atoms; each of which may be substituted by one or more groups R a ; Z xa is N, P or As, preferably it is N or P, more preferably N; Y xa- is a monovalent anion containing a halogen, preferably selected from the group consisting of F - , Cl - , Br - , I - , At - , Ts - , BF 4- , PF 6- , and more preferably it is F - , Cl - , Br - , I - , BF 4- , PF 6- , and even more preferably it is Br - , F - , Cl - , and still preferably it is Br - .

3. The composition according to claim 1 or 2, wherein Based on the total amount of the composition in the absence of solvent, the total amount of the chemical compound of the chemical formula (X a ) ranges from 0.001 wt% to 2.0 wt%, preferably from 0.01 wt% to 1.9 wt%, more preferably from 0.02 wt% to 1.8 wt%, even more preferably from 0.03 wt% to 1.6 wt%, still preferably from 0.04 wt% to 1.4 wt%.

4. The composition according to any one of claims 1 to 3, further comprising a thiol-containing chemical compound; preferably, based on the total amount of the composition in the absence of solvent, the total amount of the thiol-containing chemical compound is in the range of 0.1 wt% to 20 wt%, more preferably it is 1 wt% to 15 wt%, even more preferably it is 5 wt% to 10 wt%; preferably, it is represented by the following chemical formula (P XA ); R xa1 -SH (P XA ) wherein R xa1 selected from straight-chain alkyl groups having from 1 to 40 carbon atoms, preferably 5 to 30 carbon atoms; branched or cyclic alkyl groups having from 3 to 40 carbon atoms, preferably 5 to 30 carbon atoms; straight-chain alkenyl or alkynyl groups having from 2 to 40 carbon atoms, preferably 5 to 30 carbon atoms; branched alkenyl or alkynyl groups having from 3 to 40 carbon atoms, preferably 5 to 30 carbon atoms; aromatic or heteroaromatic ring systems having from 5 to 40 aromatic ring atoms, preferably 5 to 30 aromatic ring atoms; each of which may be substituted by one or more groups R a substituted, R a is, each time it occurs, the same or different and is H, D, a straight-chain alkyl or alkoxy group having 1 to 40 carbon atoms, preferably 1 to 25 carbon atoms, more preferably 1 to 15 carbon atoms; a branched or cyclic alkyl or alkoxy group having 3 to 40 carbon atoms, preferably 3 to 25 carbon atoms, more preferably 3 to 15 carbon atoms; a straight-chain alkenyl or alkynyl group having 2 to 40 carbon atoms, preferably 2 to 24 carbon atoms, more preferably 2 to 12 carbon atoms; a branched alkenyl or alkynyl group having 3 to 40 carbon atoms, preferably 3 to 24 carbon atoms, more preferably 3 to 12 carbon atoms; an aromatic or heteroaromatic ring system having 5 to 40 aromatic ring atoms, preferably 5 to 25 aromatic ring atoms, more preferably 5 to 18 aromatic ring atoms, wherein in each of the above groups, one or more H atoms may be replaced by D, F, Cl, Br, I, and wherein two or more adjacent substituents R a may optionally form a monocyclic or polycyclic aliphatic ring system with each other; preferably, based on the total amount of the composition in the absence of solvent, the total amount of the chemical compound of the chemical formula (X a ) and the total amount of the thiol-containing chemical compound as described in claim 4 are in the range of 0.1 wt% to 20 wt%, more preferably it is 1 wt% to 15 wt%, even more preferably it is 5 wt% to 10 wt%.

5. The composition according to any one of claims 1 to 4, which further comprises a chemical compound, the chemical compound comprising at least one group selected from the group consisting of: a straight-chain alkyl group having 1 to 80 carbon atoms or a branched-chain alkyl group having 3 to 80 carbon atoms, a straight-chain aryl-alkyl group having 5 to 45 carbon atoms, a branched-chain aryl-alkyl group having 6 to 45 carbon atoms, a straight-chain cycloalkyl group having 4 to 45 carbon atoms; and a branched-chain cycloalkyl group having 6 to 45 carbon atoms, wherein one or more non-adjacent CH2 groups in the above-mentioned groups are replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; preferably the molecular weight of the chemical compound is 2000 or less, more preferably 1000 or less, even more preferably 500 or less, and the molecular weight of the chemical compound is preferably 100 or more, more preferably 200 or more, even more preferably 300 or more, preferably the chemical compound further comprises at least one group selected from one or more members of the group consisting of: a phosphine group, a phosphine oxide group, a phosphate group, a phosphonate group, a thiol group, a tertiary amine, a carboxyl group, a heterocyclic group, a silyl group, a sulfonic acid, a hydroxyl group, a phosphonic acid.

6. The composition according to any one of claims 1 to 5, wherein The light-emitting moiety comprises an outer layer containing a metal cation and a divalent anion; and one or more types of organic moieties of anions directly attached to the outer layer by a covalent bond, wherein the divalent anion of the outer layer is selected from Se 2- , S 2- , Te 2- , O 2- or a combination of any one of these, preferably the metal cation of the outer layer is a monovalent, divalent, trivalent or tetravalent cation, more preferably the metal cation is a divalent cation selected from the group consisting of Zn 2+ , Ni 2+ , Co 2+ , Ca 2+ , Sr 2+ , Hg 2+ , Mg 2+ and Pb 2+ ; or a tetravalent cation selected from the group consisting of Ti 4+ , Ge 4+ , Si 4+ , Zr 4+ , Hf 4+ and Sn 4+ .

7. The composition according to claim 6, wherein, the organic moiety is represented by the following chemical formula (I); A-B-*(I) wherein A is an organic group, preferably the organic group is a hydrocarbon group (alkyl, aryl, aralkyl and alkylaryl), a heteroaromatic group (including aryl, alkaryl, alkyl or aralkyl), an alkylamine, a fluoroaryl, a fluoroalkaryl, a fluoroalkyl, a fluoroaralkyl, a heteroaromatic group (including fluoroaryl, fluoroalkaryl, fluoroalkyl or fluoroaralkyl); B is a connecting unit, preferably B is **-(U) o -(Y) m -(CR IIa R IIb ) n , where "**" represents the connection point with "A"; and "*" represents the point of attachment to the anion in the outer layer.

8. The composition according to any one of the preceding claims, wherein, The reactive monomer is a (meth)acrylate monomer selected from mono-(meth)acrylate monomers, di-(meth)acrylate monomers and / or tri-(meth)acrylate monomers; Preferably the two or more reactive monomers of the mixture are each independently selected from mono-(meth)acrylate monomers, di-(meth)acrylate monomers and / or tri-(meth)acrylate monomers.

9. The composition according to claim 8, wherein the di-(meth)acrylate monomer is represented by the following chemical formula (I b ), the monoacrylate monomer is represented by the following chemical formula (II b ), and / or the tri-(meth)acrylate monomer is represented by the following chemical formula (III b ); wherein X 1 is an ester group, an alkyl group or an aryl group, wherein one or more non-adjacent CH2 groups, alkyl groups or aryl groups of the ester can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; Preferably the alkyl group has 1 to 45 carbon atoms, preferably the aryl group has 3 to 45 carbon atoms; Preferably, the ester group is represented by the following formula (I bs1 ); wherein R Ib1 is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms; R Ib2 is a single bond, an unsubstituted or substituted straight-chain alkylene chain having 1 to 5 carbon atoms, an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein one or more non-adjacent CH2 groups may be replaced by an oxygen atom, C═O, C═S, C═Se, C═NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; preferably R Ib2 is an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein at least one of the non-adjacent CH2 groups may be replaced by an oxygen atom, C═O, C═S, C═Se, C═NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; X 2 is an ester group, an alkyl group or an aryl group, wherein one or more non-adjacent CH2 groups, alkyl groups or aryl groups of the ester can be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; preferably the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms; Preferably, the ester group is represented by the following formula (I bs2 ). wherein R Ibs1 is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms; R Ibs2 is a single bond, an unsubstituted or substituted straight-chain alkylene chain having 1 to 5 carbon atoms, an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein one or more non-adjacent CH2 groups may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; preferably R Ib2 is an unsubstituted or substituted branched alkylene chain having 3 to 7 carbon atoms, wherein at least one of the non-adjacent CH2 groups may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; R 1 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, wherein one or more non-adjacent CH2 groups of the alkyl or aryl group may be replaced by an oxygen atom, C═O, C═S, C═Se, C═NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; or X 1 is an ester group; preferably the ester group is a carboxylic acid group; preferably the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms; R 2 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, wherein one or more non-adjacent CH2 groups of the alkyl or aryl group may be replaced by an oxygen atom, C=O, C=S, C=Se, C=NH, SiH2, SO, SO2, OS, or CONH, and wherein one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; or X 1 is an ester group; preferably the ester group is a carboxylic acid group; preferably the alkyl group has 1 to 45 carbon atoms, and preferably the aryl group has 3 to 45 carbon atoms; R 5 is a hydrogen atom, a halogen atom of Cl, Br, or F, a methyl group, an alkyl group, an aryl group, an alkoxy group, an ester group, or a carboxylic acid group; X 3 is an ester group, an alkyl group, a cycloalkyl group, an aryl group or an alkoxy group, and in the case where X 3 is an ester group, the ester group is represented by the following formula (II bs ); wherein R IIb1 is a single bond, an unsubstituted or substituted alkylene chain having 1 to 5 carbon atoms; R IIb2 is a substituted or unsubstituted alkyl, cyclo group, cycloalkyl, aryl or alkoxy group; Preferably the symbol X 3 is wherein the "*" on the left side of the formula represents the connection point with the end group C=CR of formula (I) 5 ; l is 0 or 1; R 6 is a straight-chain alkylene chain or alkoxy chain having 1 to 25 carbon atoms, preferably R 6 is a straight-chain alkylene chain or alkoxy chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, It may be substituted by one or more groups R a wherein one or more non-adjacent CH2 groups may be replaced by R a C=CR a 、C≡C、Si(R a )2、Ge(R a )2、Sn(R a )2、C=O、C=S、C=Se、C=NR a 、P(=O)(R a )、SO、SO2、NR a 、OS、 or CONR a substituted, and one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; R 7 is a straight-chain alkylene chain or alkoxy chain having 1 to 25 carbon atoms, preferably R 7 is a straight-chain alkylene chain or alkoxy chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, It can be substituted by one or more groups R a wherein one or more non-adjacent CH2 groups can be replaced by R a C=CR a 、C≡C、Si(R a )2、Ge(R a )2、Sn(R a )2、C=O、C=S、C=Se、C=NR a 、P(=O)(R a )、SO、SO2、NR a 、OS、 or CONR a substituted, and one or more H atoms can be replaced by D, F, Cl, Br, I, CN or NO2; R a is, each time it appears, the same or different and is H, D or an alkyl group having 1 to 20 carbon atoms, a cycloalkyl or alkoxy group having 3 to 40 carbon atoms, an aromatic ring system having 5 to 60 carbon ring atoms, or a heteroaromatic ring system having 5 to 60 carbon atoms, where the H atom can be replaced by D, F, Cl, Br, I; here two or more adjacent substituents R a can also form, with each other, a monocyclic or polycyclic, aliphatic, aromatic or heteroaromatic ring system; wherein R 9 is a hydrogen atom, a linear alkyl group having 1 to 25 carbon atoms, or a (meth)acryloyl group represented by chemical formula (IV b ). R 10 is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, or a (meth)acryloyl group represented by chemical formula (V b ). R 11 is a hydrogen atom, a straight-chain alkyl group having 1 to 25 carbon atoms, or a (meth)acryloyl group represented by chemical formula (VI b ) wherein R 8 , R 8a , R 8b and R 8c are each independently or dependently of one another, H, CH2CH3 or CH3 each time they occur; wherein R 9 , R 10 and R 11 at least one of which is (meth)acryloyl, preferably two of R 9 , R 10 and R 11 are (meth)acryloyl, and the other is a hydrogen atom or a linear alkyl group having 1 to 25 carbon atoms. Preferably, the conductivity (S / cm) of the (meth)acrylate monomer of formula (III) is 1.0×10 -10 or less, preferably it is 5.0×10 -11 or less, more preferably it is in the range of 5.0×10 -11 to 1.0×10 -15 , and even more preferably it is in the range of 5.0×10 -12 to 1.0×10 -15 .

10. The composition according to any one of the preceding claims, which comprises one or more members selected from the group consisting of the following other materials; Other light-emitting portions different from the light-emitting portion as claimed in claim 1; scattering particles, antioxidants, free radical quenchers, photoinitiators, and surfactants.

11. A method for preparing the composition according to any one of the preceding claims, which at least comprises the following steps, (a) Mix a light-emitting part, at least one reactive monomer or a mixture of two or more reactive monomers with a chemical compound represented by the following chemical formula (X a ) to form a composition; wherein the symbol R xa1 , R xa2 , R xa3 , R xa4 , Z xa , Y xa- are as defined in claim 1.

12. A composition obtainable or obtained by the method as claimed in claim 11.

13. A method for forming a layer, which comprises: S1) Providing the composition according to any one of claims 1 to 11 or 12 onto a substrate, preferably by inkjet; S2) Curing the composition or the formulation, preferably the curing is photocuring, thermocuring, or a combination of photocuring and thermocuring carried out by light radiation.

14. A layer obtainable or obtained by the method as claimed in claim 13.

15. A layer which at least contains; Xi) A light-emitting portion, preferably a semiconductor light-emitting nanoparticle; Xii) A polymer made from at least one reactive monomer or a mixture of two or more reactive monomers, preferably the monomer has one or more functional groups, more preferably it is a (meth)acrylate monomer; Xiii) A chemical compound represented by the following chemical formula (X a ) wherein the symbol R xa1 , R xa2 , R xa3 , R xa4 , Z xa , Y xa- is as defined in claim 1.

16. A color conversion device (100) which at least comprises a first pixel (161) and a dam (150), the first pixel being partially or completely filled with a layer according to claim 14 or 15 which at least comprises a matrix material (120), the matrix material containing a light-emitting portion (110), the dam at least comprising a polymer material, preferably the color conversion device (100) further contains a support medium (170).

17. An optical device (300) which contains at least one functional medium (320, 420, 520) configured to modulate light or configured to emit light; and a layer according to claim 14 or 15 or a color conversion device (100) according to claim 16.

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