Composition

Abstract

The present invention relates to compositions comprising (meth)acrylate monomers.

Description

[Technical Field]

[0001] Field of the present invention The present invention relates to compositions comprising at least one (meth)acrylate monomer, uses of compositions, optical elements, photomediums, and optical devices. [Background technology]

[0002] Background technology WO2017 / 054898 A1 describes a composition containing red-emitting nanocrystals, a wetting agent and a dispersant, propylene glycol monomethyl ether acetate as a solvent, and an acrylic polymer mixture containing acrylic units comprising acidic groups and silane-modified acrylic units. WO2019 / 002239 A1 discloses compositions comprising semiconducting luminescent nanoparticles, polymers, and (meth)acrylates having a high viscosity of approximately 90 cp, such as cyclohexanedimethanol-monoacrylate.

[0003] Patent Documents 1.WO2017 / 054898 A1 2.WO2019 / 002239 A1 [Overview of the Initiative]

[0004] Summary of the present invention However, the inventors have newly discovered that there is still one or more substantial problem that needs improvement, as listed below. Improved uniform dispersion of semiconducting luminescent nanoparticles in the composition, improved uniform dispersion of scattering particles in the composition, preferably improved uniform dispersion of both semiconducting luminescent nanoparticles and scattering particles, more preferably improved uniform dispersion of semiconducting luminescent nanoparticles and / or scattering particles without solvent; a composition having a lower viscosity suitable for inkjet printing, preferably a composition that can maintain a lower viscosity even when mixed with high loading of semiconducting luminescent nanoparticles and / or scattering particles, even more preferably without solvent; a composition having a lower vapor pressure for uniform printing of large areas; improved QY and / or EQE of semiconducting luminescent nanoparticles in the composition, improved QY and / or EQE of semiconducting luminescent nanoparticles after printing; improved thermal stability; easy printing without clogging at the printing nozzle; easy handling of the composition, improved printable properties; simple manufacturing process; improved absorbance of blue light; improved solidity of post-processed products made from the composition after inkjet printing.

[0005] The inventors aimed to solve one or more of the above-mentioned problems. Next, i) at least one (meth)acrylate monomer represented by the following chemical formula (I), and ii) Another material; [ka] During the ceremony, X 1 is an unsubstituted or substituted alkyl group, aryl group, alkoxy group, or ester group; X 2 is an unsubstituted or substituted alkyl group, aryl group, alkoxy group, or ester group; R 1 These are 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; R 2is 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; Preferably the symbol X 1 is

Chem.

Chem.

[0006] In another aspect, the present invention also relates to compositions comprising, essentially derived from, or derived from polymers derived from, or that can be derived from, the (meth)acrylate monomers of the compositions of the present invention. In another aspect, the present invention also relates to the use of the compositions of the present invention in electronic devices, optical devices, sensing devices, or biomedical devices, or for assembling electronic devices, sensing devices, optical devices, or biomedical devices. In another aspect, the present invention further relates to optical elements made from compositions.

[0007] In another aspect, the present invention further relates to optical media that include, or are essentially derived from, a composition or an optical element made from a composition of the present invention. In another aspect, the present invention also relates to an optical device comprising at least one of the optical media of the present invention.

[0008] Detailed description of the present invention In accordance with the present invention, in one aspect, the composition is i) at least one (meth)acrylate monomer represented by the following chemical formula (I), and ii) Another material; This includes, and will become essentially, [ka] During the ceremony, X 1 is an unsubstituted or substituted alkyl group, aryl group, alkoxy group, or ester group; X 2 is an unsubstituted or substituted alkyl group, aryl group, alkoxy group, or ester group; R 1 These are 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; R 2 These are 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; Preferably, the symbol X1 teeth, [ka] And, During the ceremony, n is either 0 or 1; Preferably, the symbol X 2 teeth, [ka] During the ceremony, m is either 0 or 1; Preferably, at least m or n is 1, and more preferably m and n are 1; R 3 This is a linear alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms, or an aryl group having 3 to 25 carbon atoms, preferably R 3 This is a linear alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms. This is one or more radicals R a It may be replaced by, where one or more non-adjacent CH2 groups are 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 It may be replaced by, and here one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; R 4 This is a linear alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms, or an aryl group having 3 to 25 carbon atoms, preferably R 4This is a linear alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms. This is one or more radicals R a It may be replaced by, where one or more non-adjacent CH2 groups are 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 It may be replaced by, and here, one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; R a Each occurrence is, identically or differently, H, D, or an alkyl group having 1 to 20 carbon atoms, a cyclic alkyl 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 may be replaced by D, F, Cl, Br, or I; where two or more adjacent substituents R a They may also form monocyclic or polycyclic, aliphatic, aromatic, or heteroaromatic ring systems with respect to each other.

[0009] Here, the term "(meth)acrylate" is a general term for acrylate and methacrylate. Therefore, according to the present invention, the term "(meth)acrylate monomer" means methacrylate monomer and / or acrylate monomer. In a preferred embodiment of the present invention, the viscosity of the composition is 35 cP or less at room temperature, preferably between 1 and 35 cP, more preferably between 2 and 30 cP, and even more preferably between 2 and 25 cP. According to the present invention, the viscosity can be measured at room temperature using a vibrating viscometer VM-10A (SEKONIC). https: / / www.sekonic.co.jp / english / product / viscometer / vm / vm_series.html

[0010] — (Meth)acrylate monomer represented by chemical formula (I) as a matrix material Lower viscosity is considered important for creating low-viscosity compositions suitable for inkjet printing. Therefore, (meth)acrylate monomers having viscosity values ​​within the above-mentioned parameter range are particularly suitable for creating compositions for inkjet printing. By using these (meth)acrylate monomers in a composition, when mixed with other materials such as semiconducting luminescent nanoparticles at high loading, the composition can still maintain a lower viscosity within a range suitable for inkjet printing. In a preferred embodiment of the present invention, the boiling point (BP) of the (meth)acrylate monomer of chemical formula (I) is 250°C or higher, preferably in the range of 250°C to 350°C, more preferably 280°C to 350°C, and even more preferably 300°C to 348°C, for uniform inkjet printing over large areas.

[0011] The high boiling point is also considered important for producing compositions having a lower vapor pressure, preferably less than 0.001 mmHg, for uniform printing over large areas. It is preferable to use a (meth)acrylate monomer of formula (I) having a viscosity value of 25 cP or less at 25°C and a boiling point of at least 250°C. Preferably, it is in the range of 250°C to 350°C, more preferably 300°C to 348°C, in order to produce a composition suitable for uniform inkjet printing over large areas, even when mixed with high loading of other materials such as high loading of semiconducting luminescent nanoparticles.

[0012] In accordance with the present invention, the BP can be estimated by well-known methods, such as those described in Science of Petroleum, Vol. II, p. 1281 (1398), https: / / www.Sigmaaldrich.com / chemistry / solvents / learning-center / nomograph.html. In accordance with the present invention, any type of publicly available acrylate and / or methacrylate represented by chemical formula (I) may be preferably used. Especially for the first aspect, any type of publicly available acrylate and / or methacrylate represented by chemical formula (I) having a viscosity value of 25 cP or less at 25°C may be used.

[0013] More preferably, the R of formula (I) 3 and the R of formula (I) 4 Each is independently selected from the following groups, where the group is R a They may be replaced with, preferably, R a It has not been replaced by it. [Table 1-1] [Table 1-2] Specifically, preferably the R of formula (I) 3 and R 4 Each instance is selected independently or differently from the following elements: [Table 2] In the formula, R 3 In this case, "*" and / or "- - -" are points connecting to the oxygen atom in the formula or the X in the formula. 2 It represents the point connecting to, and in the formula, R 4 In this case, "*" and / or "- - -" are points connecting to the oxygen atom in the formula or the X in the formula.1 It represents a point that connects to something.

[0014] More preferably, formula (I) is NDDA (1,9-nonanediol diacrylate, BP: 342°C), HDDMA (1,6-hexanediol dimethacrylate, BP: 307°C), HDDA (1,6-hexanediol diacrylate, BP: 318°C), NPGDA (neopentyl glycol diacrylate, BP: 288°C), or DPGDA (dipropylene glycol diacrylate, BP: 314°C). [ka] [ka] [ka] [ka] [ka]

[0015] More preferably, formula (I) is an acrylate monomer. In particular, NDDA (1,9-nonanediol diacrylate, BP: 342°C), HDDA (1,6-hexanediol diacrylate, BP: 318°C), NPGDA (neopentyl glycol diacrylate, BP: 288°C), or DPGDA (dipropylene glycol diacrylate, BP: 314°C). These acrylate monomers enable faster radical polymerization reactions than (meth)acrylates, and therefore these acrylates are thought to be able to be effectively photocured even in high-concentration QM inks where the efficiency of photopolymerization is significantly reduced by the filtration effect.

[0016] In some embodiments of the present invention, the composition further comprises another (meth)acrylate monomer represented by the following chemical formula (II); [Chemical formula] X 3 is an unsubstituted or substituted alkyl group, aryl group or alkoxy group; Preferably, the symbol X 3 is [Chemical formula] wherein in the formula, l is 0 or 1; 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; R 6 is a linear alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R 6 is a linear alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals R a where one or more non-adjacent CH2 groups are 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 where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; R 7is a linear alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R 7 is a linear alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms, which may be substituted by one or more radicals R a where one or more non-adjacent CH2 groups are 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 where one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2 R a is, each time it appears, the same or different, H, D or an alkyl group having 1 to 20 carbon atoms, a cyclic alkyl 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 may be replaced by D, F, Cl, Br, I; where two or more adjacent substituents R a may also form, with each other, a monocyclic or polycyclic, aliphatic, aromatic or heteroaromatic ring system.

[0017] - (Meth)acrylate monomer represented by Chemical Formula (II) The (meth)acrylate monomer represented by the following chemical formula (II) is thought to exhibit a viscosity value even lower than that of the (meth)acrylate monomer of formula (I). Therefore, by using the (meth)acrylate monomer represented by chemical formula (II) in combination with the (meth)acrylate monomer of chemical formula (I), compositions with even lower viscosity, which are desired for composition-smooth inkjet printing, can be realized, preferably without reducing the external quantum efficiency (EQE) value. This combination is thought to be able to achieve a low-viscosity composition containing a high amount of other materials, such as high-loading semiconducting luminescent nanoparticles. Therefore, it is particularly suitable for inkjet printing when the composition contains other materials.

[0018] In a preferred embodiment of the present invention, the boiling point (BP) of the (meth)acrylate monomer of chemical formula (II) is 250°C or higher, preferably 250°C or higher, more preferably 250°C or higher, more preferably 250°C to 350°C, even more preferably 280°C to 350°C, and even more preferably 300°C to 348°C, for uniform inkjet printing over large areas. In a more preferred embodiment of the present invention, the boiling point (BP) of the (meth)acrylate monomer of chemical formula (I) and / or the boiling point (BP) of the (meth)acrylate monomer of chemical formula (II) is 250°C or higher for uniform inkjet printing over large areas, preferably both the (meth)acrylate monomers of chemical formula (I) and chemical formula (II) are 250°C or higher, more preferably it is in the range of 250°C to 350°C, even more preferably 280°C to 350°C, and even more preferably 300°C to 348°C.

[0019] More preferably, the R of formula (II) 7 Each instance is independently or differently selected from the following groups, where the group is R aThese may be replaced by, preferably, R a It has not been replaced by it. [Table 3] In the formula, "*" means that when l is 1, X 3 R 6 It represents the point connecting to, and it is X in equation (II) when n is 0. 3 This represents a point connecting to the oxygen atom. More preferably, formula (II) is lauryl methacrylate (LM, viscosity 6 cP, BP: 142°C) or lauryl acrylate (LA, viscosity: 4.0 cP, BP: 313.2°C).

[0020] 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 15:85 to 35:65, and preferably purified (meth)acrylate monomers represented by at least chemical formulas (I) and (II) are 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 can be obtained by a purification method. A higher amount of (meth)acrylate monomer of chemical formula (II) relative to the total amount of (meth)acrylate monomer of chemical formula (I) results in improved EQE of the composition, and a weight ratio of less than 50 wt.% of the mixture of (meth)acrylate monomer of chemical formula (II) relative to the total amount of (meth)acrylate monomer of chemical formula (I) is considered preferable in terms of the viscosity of the composition and the better inkjet properties of the composition.

[0021] (Meth)acrylate monomers purified by using a silica column are used. Removal of impurities from (meth)acrylate monomers by silica column purification is thought to result in improved QY of semiconducting luminescent nanoparticles in the composition.

[0022] It is believed that by combining one or more types of bi(bi-)(meth)acrylate monomers represented by chemical formula (I) and one or more types of (meth)acrylate monomers of chemical formula (II), the viscosity of the composition can be controlled, and preferably suitably adjusted (lowered) for QD inkjetting. In particular, combinations of one or more types of bi(meth)acrylate monomers represented by chemical formula (I) and one or more types of (meth)acrylate monomers of chemical formula (II) are considered to have improved photocurability for QM ink compositions and are suitable for QM compositions with high loading for smooth inkjetting.

[0023] In some embodiments of the present invention, the composition further comprises a (meth)acrylate monomer represented by the following chemical formula (III); [ka] In the formula, R 9 This is a hydrogen atom, a linear alkyl group having 1 to 25 carbon atoms, or a (meth)acrylic group represented by chemical formula (IV). [ka] R 6 This is a hydrogen atom, a linear alkyl group having 1 to 25 carbon atoms, or a (meth)acrylic group represented by chemical formula (V). [ka] R 7This is a (meth)acrylic group represented by a hydrogen atom, a linear alkyl group having 1 to 25 carbon atoms, or chemical formula (VI). [ka] In the formula, R 8a , R 8b and R 8c Each of these, independently or dependently, is either H or CH3 in each occurrence; In the formula, R 9 , R 10 and R 11 At least one of them is a (meth)acrylic group, preferably R 9 , R 10 and R 11 Two of them are (meth)acrylic groups, and the other one is a hydrogen atom or a linear alkyl group having 1 to 25 carbon atoms. Preferably, the electrical conductivity (S / cm) of the (meth)acrylate monomer of formula (III) is 1.0 * 10 -10 The following, preferably it is 5.0*10 -11 The following, and more preferably, 5.0*10 -11 from 1.0*10 -15 It is within the range of 5.0*10 -12 from 1.0*10 -15 It is within the range up to that point.

[0024] The (meth)acrylate monomer of chemical formula (III) is considered useful for improving the improved solidity of materials subsequently prepared from compositions after inkjet printing. In accordance with the present invention, a well-known (meth)acrylate monomer represented by the following chemical formula (III) can be used to improve the solidity of a layer and to crosslink it after inkjet printing. Preferably, trimethylolpropane triacrylate (TMPTA) is used as the (meth)acrylate monomer of chemical formula (III).

[0025] In a preferred embodiment of the present invention, the amount of (meth)acrylate monomer of chemical formula (III) in the composition, based on the total amount of (meth)acrylate monomer, is in the range of 0.001 wt.% to 25 wt.%, more preferably in the range of 0.1 wt.% to 15 wt.%, even more preferably in the range of 1 wt.% to 10 wt.%, and even more preferably in the range of 3 to 7 wt.%. Preferably, (meth)acrylate monomers purified by using a silica column are used.

[0026] Removal of impurities from (meth)acrylate monomers by silica column purification is thought to result in improved QY of semiconducting luminescent nanoparticles in the composition. In a preferred embodiment according to the present invention, the viscosity of the composition is 35 cP or less at room temperature, preferably between 1 and 35 cP, more preferably between 2 and 30 cP, and even more preferably between 2 and 25 cP.

[0027] In a preferred embodiment of the present invention, the composition contains 10 wt.% or less of solvent based on the total amount of the composition, more preferably 5 wt.% or less, and more preferably it is a solvent-free composition, and preferably the composition is: 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 monomethyl ether (PGME), propylene glycol monoethyl ether, and propylene glycol monopropyl ether. Ethylene glycol alkyl ether acetates such as methyl cellulose acetate and ethyl cellulose 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 glycerin; esters such as ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, and ethyl lactate; and cyclic esters such as gamma-butyro-lactone;It does not contain any solvent selected from one or more members of the group consisting of chlorinated hydrocarbons such as chloroform, dichloromethane, and chlorobenzene, or trimethylbenzene 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 being propylene glycol alkyl ether acetate, alkyl acetate, ethylene glycol monoalkyl ether, propylene glycol, and propylene glycol monoalkyl ether. It is believed that less than 10 wt.% of solvent in the composition results in improved inkjetability and can avoid second or further inkjet marks on the same pixel after solvent evaporation.

[0028] In accordance with the present invention, preferably the composition is iii) A first semiconducting nanoparticle, optionally comprising one or more shell layers covering at least a portion of the first semiconducting nanoparticle, preferably comprising a ligand, and more preferably comprising an alkyl-type ligand having 2 to 25 carbon atoms, preferably 6 to 15 carbon atoms (such as C12, C8), and at least one semiconducting luminescent nanoparticle; iv) Another (meth)acrylate monomer; v) Scattering particles, and vi) further comprising another material selected from one or more members of the group consisting of optically transparent polymers, antioxidants, radical quenchers, photoinitiators and / or surfactants.

[0029] In some embodiments of the present invention, preferably the composition of the present invention, v) Scattering particles; and vii) comprising at least one polymer designed to enable the dispersion of disruptive particles in the composition; Here, the polymer comprises at least 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 silane group, a sulfonic acid, a hydroxyl group, a phosphonic acid, or a combination thereof, and preferably the polymer comprises a tertiary amine, a phosphine oxide group, a phosphonic acid, or a phosphate group.

[0030] vii) A polymer (dispersant) designed to enable the dispersion of disruptive particles in a composition. A polymer designed to enable the dispersion of confusion particles in a composition according to the present invention comprises at least a repeating unit A comprising 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 silane group, a sulfonic acid, a hydroxyl group, a phosphonic acid, or a combination thereof, preferably the repeating unit A comprising a tertiary amine, a phosphine oxide group, a phosphonic acid, or a phosphate group.

[0031] In some embodiments of the present invention, repeating unit A and repeating unit B are constituent repeating units. More preferably, repeating unit A comprises a tertiary amine represented by the following chemical formula (VII): NR 12 R 13 R 14 - - (VII) In the formula, R 12 R is a hydrogen atom, a linear or branched alkyl group having 1 to 30 carbon atoms, or an aryl group having 1 to 30 carbon atoms; 13 R is a hydrogen atom, a linear or branched alkyl group having 1 to 30 carbon atoms, or an aryl group having 1 to 30 carbon atoms; 12 and R 13 teeth, They may be the same or different from one another; R 14These include single bonds, linear or branched alkylene groups having 1 to 30 carbon atoms, alkenylene groups having 1 to 30 carbon atoms, and (poly)oxaalkylene groups having 1 to 30 carbon atoms.

[0032] Even more comfortable R 12 R is a linear or branched alkyl group having 1 to 30 carbon atoms; 13 R is a linear or branched alkyl group having 1 to 30 carbon atoms; 12 and R 13 They can be the same as or different from one another. Further comfort R 12 is a methyl group, an ethyl group, an n-propyl group, or an n-butyl group; R 13 These are methyl, ethyl, n-propyl, or n-butyl groups. In a preferred embodiment according to the present invention, repeating unit A does not contain salt.

[0033] In a preferred embodiment of the present invention, the polymer is a copolymer selected from the group consisting of graft copolymers, block copolymers, alternating copolymers, and random copolymers, wherein the copolymer preferably comprises repeating units A and B that do not include any of the following: phosphine groups, phosphine oxide groups, phosphate groups, phosphonate groups, thiol groups, tertiary amines, carboxyl groups, heterocyclic groups, silane groups, sulfonic acids, hydroxyl groups, phosphonic acids, and combinations thereof, and more preferably the copolymer is a block copolymer represented by the following chemical formula (VIII) or (IX): A n - B m - (VIII) B o - A n - B m - (IX) In the formula, the symbol "A" represents repeating unit A; the symbol "B" is taken to mean repeating unit B; the symbols "n", "m", and "o" are, in each occurrence, independently or dependently, integers from 1 to 100, preferably from 5 to 75, more preferably from 7 to 50; and more preferably, repeating unit B comprises a polymer chain selected from the group consisting of (poly)ethylene, (poly)phenylene, polydivinylbenzene, (poly)ether, (poly)ester, (poly)amide, (poly)urethane, (poly)carbonate, polylactic acid, (poly)vinyl ester, (poly)vinyl ether, polyvinyl alcohol, polyvinylpyrrolidone, cellulose, and any derivative thereof.

[0034] In a preferred embodiment of the present invention, the polymer chain of repeating unit B is polyethylene glycol. More preferably, the repeating unit B comprises a chemical structure represented by the following chemical formula (X): [ka] In the formula, R 15 R is a hydrogen atom or a methyl group; 16 is an alkyl group having 1 to 10 carbon atoms; and n is an integer from 1 to 5, with "*" representing a point connecting to another polymer repeating unit or to the end of a polymer. Even more comfortable R 15 R can be a hydrogen atom or a methyl group. 16 is an ethyl group, and n is an integer from 1 to 5.

[0035] In some embodiments of the present invention, the surface of the core, or the outermost surface of one or more shell layers of semiconducting luminescent nanoparticles, may be partially or entirely covered and coated with a polymer. For example, by using the ligand exchange method described in Thomas Nann, Chem.Commun., 2005, 1735-1736, DOI: 10.1039 / b-414807j, the polymer can be introduced onto the surface of the core or the outermost surface of the core of semiconducting luminescent nanoparticles.

[0036] In accordance with the present invention, in some embodiments, the content of the polymer is in the range of 1% to 500% by weight, more preferably in the range of 20% to 350% by weight, and even more preferably 50% to 200% by weight, with respect to the total weight of the semiconducting luminescent nanoparticles. In a preferred embodiment of the present invention, the weight-average molecular weight (Mw) of the polymer is in the range of 200 g / mol to 30,000 g / mol, preferably 250 g / mol to 2,000 g / mol, and more preferably 400 g / mol to 1,000 g / mol. Molecular weight M w This is determined using GPC (Gel Permeation Chromatography) against a polystyrene internal standard.

[0037] As polymers, commercially available wetting and dispersion additives that can be dissolved in non-polar and / or low-polarity organic solvents may preferably be used. BYK-111, BYK-LPN6919, BYK-103, BYK-P104, BYK-163 ([Trademark], from BYKcom.), TERPLUS MD1000 series ([Trademark], from Otsuka Chemical) such as MD1000, MD1100, poly(ethylene glycol) methyl etheramine (Sigma-Ald 767565 [Trademark], from Sigma-Aldrich), polyester bis-MPA dendron, 32-hydroxyl, 1-thiol (Sigma-Ald 767115 [Trademark], from Sigma-Aldrich), LIPONOL DA-T / 25 (from Lion Specialty Chemicals Co.), carboxymethylcellulose (from Polyscience, etc.), for example, “Marc Thiry et al., ACSNANO, American Chemical Society, Vol. 5, No. 6, pp 4965-4973, Other wetting and dispersing additives, such as those disclosed in “Kimihiro Susumu, et.al., J. Am. Chem. Soc. 2011, 133, pp 9480-9496”.

[0038] Therefore, in some embodiments of the present invention, the composition comprises at least a (meth)acrylate monomer of chemical formula (I), a (meth)acrylate monomer of chemical formula (II), and a polymer designed to allow dispersion of confusion particles in the composition, wherein the mixing ratio of (meth)acrylate monomer of chemical formula (I):(meth)acrylate monomer of chemical formula (II):polymer is in the range of 10:89:1 to 50:40:10, preferably from 15:82:3 to 30:60:10.

[0039] In some embodiments of the present invention, a composition comprises, essentially, or consists of a polymer derived from or that can be derived from at least a (meth)acrylate monomer of the composition of the present invention. In a preferred embodiment of the present invention, the polymer is derived from or can be derived from all (meth)acrylate monomers in the composition, such as at least a (meth)acrylate monomer of chemical formula (I) and / or a (meth)acrylate monomer of chemical formula (II).

[0040] iii) Semiconducting luminescent nanoparticles In accordance with the present invention, the term "semiconductor" means a material that, at room temperature, has an electrical conductivity between that of a conductor (such as copper) and that of an insulator (such as glass). Preferably, the semiconductor is a material whose electrical conductivity increases with temperature. The term "nano-sized" refers to a size between 0.1 nm and 999 nm, preferably 1 nm to 150 nm, and more preferably 3 nm to 50 nm.

[0041] Therefore, according to the present invention, "semiconductive light-emitting nanoparticles" are understood to mean a light-emitting material whose size is between 0.1 nm and 999 nm, preferably 1 nm to 150 nm, more preferably 3 nm to 50 nm, and whose electrical conductivity at room temperature is between that of a conductor (such as copper) and that of an insulator (such as glass). Preferably, the semiconductor is a material whose electrical conductivity increases with temperature, and its size is between 0.1 nm and 999 nm, preferably 1 nm to 150 nm, more preferably 3 nm to 50 nm.

[0042] In accordance with the present invention, the term "size" means the average diameter of the longest axis of the semiconducting nano-sized luminescent particles. The average diameter of semiconducting nanoscale luminescent particles is calculated based on 100 semiconducting luminescent nanoparticles in TEM images created by the Tecnai G2 Spirit Twin T-12 Transmission Electron Microscope. In a preferred embodiment of the present invention, the semiconducting luminescent nanoparticles of the present invention are quantum-sized materials.

[0043] In accordance with the present invention, the term "quantum-sized" means the size of the semiconducting material itself without ligand or other surface modification, which may represent a quantum confinement effect, as described, for example, in ISBN: 978-3-662-44822-9. For example, CdS, CdSe, CdTe, ZnS, ZnSe, ZnSeS, ZnTe, ZnO, GaAs, GaP, GaSb, HgS, HgSe, HgSe, HgTe, InAs, InP, InPZn, InPZnS, InPZnSe, InPZnSeS, InPZnGa, InPGaS, InPGaSe, InPGaSeS, InPZnGaSeS, and InPGa, InCdP, InPCdS, InPCdSe, InSb, AlAs, AlP, AlSb, Cu2S, Cu2Se, CuInS2, CuInSe2, Cu2(ZnSn)S4, Cu2(InGa)S4, TiO2 alloys, and any combination thereof may be used.

[0044] In a preferred embodiment of the present invention, the first semiconducting material comprises at least one element from Group 13 of the periodic table and one element from Group 15 of the periodic table, preferably the element from Group 13 being In and the element from Group 15 being P, and more preferably the first semiconducting material is selected from the group consisting of InP, InPZn, InPZnS, InPZnSe, InPZnSeS, InPZnGa, InPGaS, InPGaSe, InPGaSeS, InPZnGaSeS, and InPGa. In accordance with the present invention, the shape of the core of the semiconducting luminescent nanoparticles and the type of shape of the synthesized semiconducting luminescent nanoparticles are not specifically limited. For example, cores and / or semiconducting luminescent nanoparticles can be synthesized that are spherical, elongated, star-shaped, polyhedral, cone-shaped, quadrupedal, tetrahedral, platelet-shaped, conical, and irregularly shaped.

[0045] In some embodiments of the present invention, the average diameter of the core is in the range of 1.5 nm to 3.5 nm. The average core diameter is calculated based on 100 semiconducting luminescent nanoparticles in TEM images created by the Tecnai G2 Spirit Twin T-12 Transmission Electron Microscope. In some embodiments of the present invention, at least one shell layer comprises at least one element from Group 12 of the periodic table and one element from Group 16 of the periodic table, preferably the first element being Zn and the second element being S, Se, or Te; preferably a first shell layer directly covering the core comprises or consists of one element from Group 12 of the periodic table and one element from Group 16 of the periodic table, preferably the first element being Zn and the second element being S, Se, or Te.

[0046] In a preferred embodiment of the present invention, at least one shell layer (first shell layer) is represented by the following formula (XI), and preferably the shell layer directly covering the core is represented by chemical formula (XI); ZnS x Se y Te z - (XI) In the formula, 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, and preferably the shell layer is ZnSe, ZnS x Se y、 ZnSe y Te z or ZnS x Te z That is the case.

[0047] In some embodiments of the present invention, the shell layer is an alloy shell layer or a gradient shell layer, preferably the gradient shell layer is ZnS x Se y ZnSe y Te z , or ZnS x Te zAnd more preferably, it is ZnS x Se y That is the case. In some embodiments of the present invention, the semiconducting luminescent nanoparticles further comprise a second shell layer on the shell layer, preferably comprising or consisting 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 being Zn and the fourth element being S, Se, or Te, wherein the fourth element and the second element are not the same.

[0048] In a preferred embodiment of the present invention, the second shell layer is represented by the following formula (XI'): ZnS x Se y Te z - (XI') In the formula, 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 However, the shell layer and the second shell layer are not the same. In some embodiments of the present invention, the second shell layer may be an alloy shell layer. In some aspects of the present invention, the semiconducting luminescent nanoparticles may include one or more additional shell layers on top of a second shell layer as a multi-shell.

[0049] In accordance with the present invention, the term "multi-shell" refers to a stacked shell layer consisting of three or more shell layers. For example, CdSe / CdS, CdSeS / CdZnS, CdSeS / CdS / ZnS, ZnSe / CdS, CdSe / ZnS, InP / ZnS, InP / ZnSe, InP / ZnSe / ZnS, I nZnP / 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 any combination thereof may be used. Preferably InP / ZnS, InP / ZnSe, InP / ZnSe / ZnS, InZnP / ZnS, InZnP / ZnSe, InZnP / ZnSe / ZnS, InGaP / ZnS, InGaP / ZnSe, InGaP / ZnSe / ZnS. Such semiconducting luminescent nanoparticles are publicly available (e.g., from Sigma Aldrich) and / or can be synthesized by methods described, for example, US 7,588,828B, US 8,679,543B and Chem. Mater. 2015, 27, pp 4893-4898.

[0050] In some embodiments of the present invention, the composition comprises two or more semiconducting light-emitting nanoparticles. In some embodiments of the present invention, the composition comprises a plurality of semiconducting light-emitting nanoparticles. In some aspects of the present invention, the total amount of semiconducting luminescent nanoparticles based on the total amount of the composition 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.%.

[0051] — Ligand In some embodiments of the present invention, the semiconducting luminescent nanoparticles may optionally be directly coated with one or more ligands, or the outermost surface of the inorganic portion of the semiconducting luminescent nanoparticles may be directly coated with additional ligands, and the additional ligands may be further coated with a polymer.

[0052] Additional 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), octadecylphosphonic acid (ODPA), and hexylphosphonic acid (HPA); oleylamine, dedecylamine (DDA), tetradecylamine (TDA), hexadecylamine (HDA), and oc Amines such as tadecylamine (ODA) and oleylamine (OLA); thiols such as 1-octadecene (ODE), hexadecanethiol and hexanethiol; mercaptocarboxylic acids such as mercaptopropionic acid and mercaptoundecanoic acid; carboxylic acids such as oleic acid, stearic acid and myristic acid; acetic acid, polyethyleneimine (PEI), monofunctional PEG-thiols (mPEG-thiols) or derivatives of mPEG-thiols, and any combination thereof may be used. Examples of such ligands are described, for example, in the published international patent application number WO2012 / 059931 A.

[0053] v) scattering particles In accordance with the present invention, the scattering particles may also preferably include inorganic oxides such as SiO2, SnO2, CuO, CoO, Al2O3TiO2, Fe2O3, Y2O3, ZnO, ZnS, and MgO; organic particles such as polymerized polystyrene and polymerized PMMA; well-known small particles of inorganic hollow oxides such as hollow silica, or any combination thereof. In some embodiments of the present invention, the composition is iii) The composition comprises a first semiconducting nanoparticle, and optionally one or more shell layers covering at least a portion of the first semiconducting nanoparticle, and preferably the composition has an EQE value of 23% or more, preferably 24% or more and less than 95%.

[0054] In accordance with the present invention, as the transparent polymer, a wide variety of well-known transparent polymers suitable for optical devices, such as those described in WO2016 / 134820 A, may preferably be used. In accordance with the present invention, the term “transparent” means at least approximately 60% incident light transmission at the thickness used in the optical medium and in the range of wavelengths used during the operation of the optical medium. Preferably it is more than 70%, more preferably more than 75%, and most preferably more than 80%. In accordance with the present invention, the term "polymer" means a material having repeating units and a weight-average molecular weight (Mw) of 1000 g / mol or more.

[0055] Molecular weight M w This is determined using GPC (Gel Permeation Chromatography) against a polystyrene internal standard. In some embodiments of the present invention, the glass transition temperature (Tg) of the transparent polymer is 70°C or higher and 250°C or lower. Tg is measured based on the change in heat capacity observed in differential scanning colorimetric quantification, as described in http: / / pslc.ws / macrog / dsc.htm;Rickey J Seyler, Assignment of the Glass Transition, ASTM publication code number (PCN) 04-012490-50. For example, poly(meth)acrylates, epoxy, polyurethanes, and polysiloxanes can preferably be used as transparent polymers for transparent matrix materials.

[0056] In a preferred embodiment of the present invention, the weight-average molecular weight (Mw) of the polymer used as the transparent matrix material is in the range of 1,000 to 300,000 g / mol, and more preferably it is in the range of 10,000 to 250,000 g / mol. In accordance with the present invention, well-known antioxidants, radical quenchers, photoinitiators and / or surfactants may preferably be used, as described in WO2016 / 134820 A.

[0057] — Calculation of QY The quantum yield (QY) of the composition was measured using an absolute PL quantum yield spectrometer C9920-02 (Hamamatsu Photoics KK), and the following formula was used. Quantum yield (QY) = Number of synchrotron photons from the sample / Number of absorbed photons from the sample. - use In another aspect, the present invention relates to the use of the compositions of the present invention in electronic devices, optical devices, sensing devices, or biomedical devices, or for assembling electronic devices, sensing devices, optical devices, or biomedical devices. In another aspect, the present invention also relates to the use of compositions for inkjet printing, preferably for large-area inkjet printing.

[0058] — Optical elements In another aspect, the present invention further relates to optical elements made from the compositions of the present invention. - Optical medium In another aspect, the present invention further relates to an optical medium comprising one or more of the optical elements. Preferably, the optical medium comprises a plurality of optical elements. For example, the optical medium comprises a plurality of red, green, and blue pixels (red, green, and blue optical elements).

[0059] In a preferred embodiment of the present invention, the elements can be separated by a bank structure. In some embodiments of the present invention, the optical medium may be an optical sheet, such as a color filter, a color conversion film, a remote phosphor tape, or another film or filter. In accordance with the present invention, the term "sheet" includes films and / or layered structured media.

[0060] Several methods have been proposed to increase the fluorescence out-coupling efficiency from photomediums containing semiconducting luminescent nanoparticles, such as quantum-sized materials containing optical films, including incorporating scattering particles into and / or adjacent films, and reducing the refractive index of the film by incorporating and positioning hollow silica particles in a suitable shape structure (compared to Proceedings of SPIE, P.184, 5519-33, 2004). Among these, positioning a structural film on top of the quantum material containing the film is most suitable for applications to large TVs, where local dimming techniques are applied to achieve a high dynamic range. Scattering particles are detrimental to dimming techniques because scattered light causes chromatic aberration, and reducing the refractive index of the film sufficiently for practical purposes is difficult due to the limited volume of hollow silica particles. A combination of reducing the refractive index and positioning a structural film can also be applied.

[0061] — Optical devices In another aspect, the present invention further relates to an optical device including an optical medium. In some aspects of the present invention, the optical device may be a liquid crystal display device (LCD), an organic light-emitting diode (OLED), a backlight unit for an optical display, a light-emitting diode device (LED), a microelectromechanical system (hereinafter "MEMS"), an electrowetting display, or an electrophoretic display, a lighting device, and / or a solar cell. The term "radiation" refers to the emission of electromagnetic waves due to electron transitions in atoms and molecules.

[0062] — Process In another aspect, the present invention also provides for assembling the compositions of the present invention: a) at least i) at least one (meth)acrylate monomer represented by the following chemical formula (I), and ii) a process which is essentially derived from or will be derived from, including mixing another material; [ka] During the ceremony, X 1 is an unsubstituted or substituted alkyl group, aryl group, or alkoxy group; R 1 These are 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; R 2 These are 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; Preferably, the symbol X 1 teeth, [ka] And, During the ceremony, n is either 0 or 1; Preferably, the symbol X 2 teeth, [ka] And, During the ceremony, m is either 0 or 1; R 3 This is a linear alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms, or an aryl group having 3 to 25 carbon atoms, preferably R 3 This is a linear alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms. This is one or more radicals R aIt may be replaced by, where one or more non-adjacent CH2 groups are 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 It may be replaced by, and here, one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2, R 4 This is a linear alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, a cycloalkane having 3 to 25 carbon atoms, or an aryl group having 3 to 25 carbon atoms, preferably R 4 This is a linear alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms. This is one or more radicals R a It may be replaced by, where one or more non-adjacent CH2 groups are 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 It may be replaced by, and here, one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; R a Each occurrence is, identically or differently, H, D, or an alkyl group having 1 to 20 carbon atoms, a cyclic alkyl 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. Here, the H atom may be replaced by D, F, Cl, Br, or I; and two or more adjacent substituents R a They may also form monocyclic or polycyclic, aliphatic, aromatic, or heteroaromatic ring systems with each other. Obtain the composition.

[0063] Preferably, the other material is a (meth)acrylate monomer represented by the following chemical formula (II); [ka] X 3 is an unsubstituted or substituted alkyl group, aryl group, or alkoxy group; Preferably, the symbol X 3 teeth, [ka] And, During the ceremony, l is either 0 or 1; R 5 These are 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; R 6 is a linear alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R 6 This is a linear alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms. This is one or more radicals R a It may be replaced by, where one or more non-adjacent CH2 groups are 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, NRa , OS, or CONR a It may be replaced by, and here, one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; R 7 is a linear alkylene chain or alkoxylene chain having 1 to 25 carbon atoms, preferably R 7 This is a linear alkylene chain or alkoxylene chain having 1 to 15 carbon atoms, more preferably 1 to 5 carbon atoms. This is one or more radicals R a It may be replaced by, where one or more non-adjacent CH2 groups are 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 It may be replaced by, and here, one or more H atoms may be replaced by D, F, Cl, Br, I, CN or NO2; R a Each occurrence is, identically or differently, H, D, or an alkyl group having 1 to 20 carbon atoms, a cyclic alkyl 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 may be replaced by D, F, Cl, Br, or I; where two or more adjacent substituents R a They may also form monocyclic or polycyclic, aliphatic, aromatic, or heteroaromatic ring systems with respect to each other.

[0064] Preferably, the mixing ratio of (meth)acrylate monomer of chemical formula (I) to (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 15:85 to 35:65, and preferably at least purified (meth)acrylate monomers represented by chemical formulas (I) and (II) are used in the composition, and more preferably both (meth)acrylate monomer of chemical formula (I) and (meth)acrylate monomer of chemical formula (II) are obtained or can be obtained by a purification method.

[0065] Therefore, in a preferred embodiment of the present invention, the method comprises a purification step of (meth)acrylate monomer. More preferably, the purification step occurs before step a). Further details on (meth)acrylate monomers, other materials, polymers, and scattering particles are described in the sections "(meth)acrylate monomers," "other materials," "polymers," and "scattering particles."

[0066] Additional additives may be mixed in, as described in the "Additional Materials" section. In accordance with the present invention, it is desirable to avoid adding any solvents in order to achieve improved inkjet printing over large areas with improved uniformity, no clogging in the nozzles, and / or good scattering of semiconducting luminescent nanoparticles and / or good scattering of scattering particles. In another aspect, the present invention also; X) Inkjeting the composition of the present invention onto a substrate. Y) Optionally apply photocuring of (meth)acrylate monomer(s) by UV light irradiation. This also relates to the process of assembling elements or optical media that include them.

[0067] Technical Effects of the Invention The present invention provides one or more of the following effects: improved uniform dispersion of semiconducting luminescent nanoparticles in a composition; improved uniform dispersion of scattering particles in a composition, preferably improved uniform dispersion of both semiconducting luminescent nanoparticles and scattering particles, more preferably improved uniform dispersion of semiconducting luminescent nanoparticles and / or scattering particles without solvent; a composition having a lower viscosity suitable for inkjet printing, preferably a composition that can maintain a lower viscosity even when mixed with high loading of semiconducting luminescent nanoparticles and / or scattering particles, even more preferably without solvent; a composition having a lower vapor pressure for uniform printing of large areas; improved QY and / or EQE of semiconducting luminescent nanoparticles in a composition, improved QY and / or EQE of semiconducting luminescent nanoparticles after printing; improved thermal stability; easy printing without clogging at the printing nozzle; easy handling of the composition, improved printable properties; a simple manufacturing process; improved absorbance of blue light; and improved solidity of post-processed products made from the composition after inkjet printing. Examples 1 to 14 below provide a description of the present invention and a detailed description of their manufacturing.

[0068] Examples Example 1 : Preparation of monomer mixtures 1,6-Hexanediol dimethacrylate (HDDMA) and lauryl acrylate (LA) are stored covered with molecular sieves 4A. Prior to use, HDDMA is purified by passing it through a silica gel column. 4 g of HDDMA and 6 g of LA are mixed in a glass vial to obtain a monomer mixture. The weight ratio of HDDMA to LA in the monomer mixture is 40:60. In the same manner as described above, a monomer mixture of HDDMA:LA(30:70), HDDMA:LA(20:80), and NDDA:LA(30:70) is prepared in place of HDDMA:LA(40:60).

[0069] Example 2 : Preparation of QD monomer dispersions 10.41 ml of a green, Cd-free InP-based QD solution in toluene (Merck) and 1.02 g of the monomer mixture obtained in Example 1 were mixed in a glass flask. The toluene was evaporated under vacuum at 40°C (deg.C) using a rotary evaporator to obtain 3.06 g of the QD monomer dispersion. Example 3 : Preparation of TiO2 monomer dispersions 0.425 g of TiO2 solution and 0.51 g of the monomer mixture obtained in Example 1 were mixed in a glass flask. n-octane was evaporated under vacuum at 40°C (deg.C) using a rotary evaporator to obtain 0.816 g of TiO2 monomer dispersion.

[0070] Example 4 : Preparation of QD ink 1.12 g of the QD monomer dispersion obtained in Example 2, the TiO2 monomer dispersion obtained in Example 3, and the monomer mixture obtained in Example 1, along with 0.051 g of a photoinitiator (Omnirad 819) and 0.041 g of an antioxidant (Irganox 1010), were mixed in a glass vial. The resulting mixture was shaken by applying ultrasound and then by magnetic stirring to produce 5 g of QD ink. The composition of the QD ink is as follows: Comparative Example 1 : Preparation of QD ink (comparative example without diacrylate monomer) The QD ink composition is prepared in the same manner as described in Examples 1 to 4 above, except that TBCH (tert-butylcyclohexyl acrylate) and TMPTA (trimethylolpropane triacrylate) are used in the composition in the following concentrations instead of HDDMA. [Table 4]

[0071] Example 5 : Fabrication of QD test cells for EQE and QY measurement The QD ink obtained in Example 4 was injected into a test cell with a 15 mm gap, and the QD ink obtained in Comparative Example 5 was also injected into a test cell under the same conditions and photocured by irradiation with UV light.

[0072] Example 6 : EQE measurement EQE measurements are performed using an integrating sphere equipped with excitation light from an optical fiber (CWL: 450 nm) and a spectroscopic instrument (C9920, Hamamatsu Photonics). Air is used as a reference at room temperature to detect the photons of the excitation light. The number of photons emitted from the cell to the integrating sphere is counted at room temperature using a spectroscopic measuring device. The EQE is calculated using the following method. EQE = photon [synchrotron radiation] / photon [excitation light] Wavelength range for calculations Radiation: [Green] 480nm~600nm, [Red] 560nm~680nm Table 1 shows the EQE measurement results for the QD ink composition obtained in Example 4. Table 1 [Table 5] The EQE value of the QD ink composition obtained in the comparative example was 22.7.

[0073] Reference example 1 : Preparation of QD ink QD ink composition A is prepared in the same manner as described in Examples 1 to 4 above, except that unpurified (meth)acrylate monomer HDDMA:LA(20:80) is used instead of purified (meth)acrylate monomer. The EQE value of QD ink composition A, measured in the same manner as described in Example 6, is 23.7. Reference example 2 : Preparation of QD ink QD ink composition B is prepared in the same manner as described in Examples 1 to 4 above, except that unpurified (meth)acrylate monomer HDDMA:LA(40:60) is used instead of purified (meth)acrylate monomer. The EQE value of QD ink composition B, measured in the same manner as described in Example 6, is 24.6.

[0074] Example 7 : QY measurement of dilute QD monomer solutions The sample is prepared by diluting 6.5 ml of green QD solution in toluene (Merck) containing 10 ml of monomer mixture. The sample concentration is 0.13 mg QD / ml of monomer solution. QY is measured in a quartz cuvette at 450 nm excitation using an absolute PL quantum yield measurement system (C9920, Hamamatsu photonics). Significant improvements in QY are observed by an increasing HDDMA ratio in the monomer mixture. Surprisingly, the QY in the 50% HDDMA mixture is even higher than the original QY. [Table 6]

[0075] Example 8 : Preparation of QD ink The QD ink composition is prepared in the same manner as described in Examples 1-4 above, except that TMPTA is used together with LA and HDDMA as also mentioned below. [Table 7]

[0076] Example 9 : Fabrication of test cells and swab tests The QD inks obtained in Example 4 and the QD ink obtained in Example 8 are spin-coated onto a glass substrate at 400 rpm for 20 seconds and are photocured by irradiating them through a quartz glass under N2 conditions with UV light at 380 mJ or at 760 mJ. For photocuring, a 395 nm LED flashlight, 6.3 mW / cm 2 (FWHM 10 nm) is used. The surface of the obtained sample is wiped by hand with a clean wiping solution. Table 2 shows the results of the wiping test.

Table 8

[0077] Example 10 : QD Ligand Exchange Cd-free InP-based QDs (Merck) are mixed with 7.5 wt.% or 50 wt.% of mono(2-acryloyloxyethyl) succinate (CAS: 50940-49-3, from Tokyo Kasei) based on the total amount of QDs in CHCl3 at 40 °C (deg.C) for 1 hour. Cleaning in CHCl3-MeOH is performed. Example 11 : Preparation of QD ink The QD ink composition is prepared in the same manner as described in Examples 1 to 4 above, except that QDs with mono(2-acryloyloxyethyl) succinate (hereinafter "AES") obtained from Example 10 are used together with LA and HDDMA as described below.

Table 9

[0078] Example 12 : Production of QD test cells The QD ink obtained in Example 11 is injected into a test cell with a 15 mm gap and photocured by irradiation with UV light. The AES content in the cured QD ink is 3.2 wt.% based on the total amount of cured QD ink in the test cell. The test cell is extremely clear. According to TEM analysis, a smooth layered structure is observed in the cured ink, free from any blemishes and free from any aggregation.

[0079] Example 13 : Preparation of QD ink and fabrication of QD test cells The QD ink composition is prepared in the same manner as described in the examples, except that no TiO2 particles are used. The QD test cell is assembled and the EQE is measured in the same manner as described in Examples 5 and 6, except that the QD ink obtained in Example 13 is used. The table below shows the measurement results. [Table 10]

[0080] Example 14 : Preparation of monomer mixtures Monomer mixtures of HDDA (1,6-hexanediol diacrylate) and LA, and NPGDA (neopentyl glycol diacrylate) and LA are prepared in the same manner as described in Example 1, except that HDDA and NPGDA are used instead of HDDMA.

Claims

1. i) at least one (meth)acrylate monomer represented by the following chemical formula (I) purified using a silica column, (ii) another material, and A composition comprising another (meth)acrylate monomer represented by the following chemical formula (II): 【Chemistry 1】 During the ceremony, R 1 is a hydrogen atom or a methyl group; R 2 is a hydrogen atom or a methyl group; Symbol X 1 teeth, 【Chemistry 2】 And, During the ceremony, n is 1; "*1-----" is the point that connects to the carbon bonded to R 1 in chemical formula (I), and "*2----" is the point that connects to X 2. Symbol X 2 teeth, 【Transformation 3】 And, During the ceremony, m is 0; "*4-----" is the point that connects to the carbon bonded to R 2 in equation (I), and "*3----" is the point that connects to X 1. R 3 This is a linear alkylene chain having 6 to 9 carbon atoms. 【Chemistry 4】 Symbol X 3 teeth, 【Transformation 5】 And, During the ceremony, l is 0; R 5 is a hydrogen atom; R 7 It is a linear alkylene chain having 12 carbon atoms, The mixing ratio of (meth)acrylate monomer of chemical formula (I) to (meth)acrylate monomer of chemical formula (II) is from 5:95 to 50:

50. The composition is a solvent-free composition, The composition having a viscosity of 35 cP or less at room temperature.

2. The composition according to claim 1, wherein the boiling point (BP) of the (meth)acrylate monomer of chemical formula (I) and / or chemical formula (II) is 250°C or higher.

3. iii) A core, and at least one semiconducting light-emitting nanoparticle comprising one or more shell layers optionally covering at least a portion of the core; iv) Another (meth)acrylate monomer; v) Scattering particles, and vi) Optically transparent polymers, antioxidants, radical quenchers, photoinitiators and / or surfactants Includes another material selected from one or more members of the group consisting of, The composition according to claim 1 or 2.

4. v) Scattering particles; and vii) A composition according to any one of claims 1 to 3, comprising at least one polymer designed to allow the dispersion of scattering particles in the composition; Here, the polymer comprises at least 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 silane group, a sulfonic acid, a hydroxyl group, a phosphonic acid, or a combination thereof. The aforementioned composition.

5. iii) The composition according to any one of claims 1 to 4, comprising a core, and at least one semiconducting light-emitting nanoparticles, each comprising a core and optionally one or more shell layers covering at least a portion of the core.

6. A composition according to any one of claims 1 to 5, comprising at least a (meth)acrylate monomer of chemical formula (I), a (meth)acrylate monomer of chemical formula (II), and a polymer designed to enable the dispersion of scattering particles in the composition, wherein the mixing ratio of (meth)acrylate monomer of chemical formula (I):(meth)acrylate monomer of chemical formula (II):polymer is in the range of 10:89:1 to 50:40:

10.

7. The composition according to any one of claims 1 to 6, wherein semiconducting luminescent nanoparticles are present, and the total amount of semiconducting luminescent nanoparticles based on the total amount of the composition is in the range of 0.1 wt.% to 90 wt.%.

8. Use of the composition according to any one of claims 1 to 7 in an electronic device, optical device, sensing device, or biomedical device, or for assembling an electronic device, sensing device, optical device, or biomedical device.

9. An optical element made from the composition described in any one of claims 1 to 7.

10. A photocatalytic medium comprising one or more of the compositions described in any one of claims 1 to 7, or the optical elements described in claim 9.

11. An optical device comprising at least one of the compositions described in any one of claims 1 to 7, or at least one of the optical media described in claim 10.

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