Narrow-emission-spectrum high-performance organic light-emitting material and device preparation process thereof

Abstract

The invention relates to the technical field of organic light-emitting materials, and discloses a narrow-emission-spectrum high-performance organic light-emitting material and a preparation process of a device thereof. The invention discloses a narrow-emission-spectrum high-performance organic light-emitting material. The structural formula of the narrow-emission-spectrum high-performance organic light-emitting material is shown as a formula Ia or a formula Ib. The narrow-emission-spectrum high-performance organic light-emitting material is pure organic molecules and does not contain any metal ions, and the cost can be reduced while the light-emitting performance of the organic light-emitting material is improved; the narrow-emission-spectrum high-performance organic light-emitting material shows the maximum emission value in the blue spectral range, the sky blue spectral range, the green spectral range, the yellow spectral range or the red spectral range, and the photoluminescence quantum yield can reach 50%; the narrow-emission-spectrum high-performance organic light-emitting material disclosed by the invention is applied to a photoelectric device, and the photoelectric device has relatively high efficiency, relatively high stability and relatively high color purity.

Description

Technical Field

[0001] The present invention relates to the technical field of organic light-emitting materials, and more particularly, to a class of high-performance organic light-emitting materials with narrow emission spectra and a device preparation process thereof. Background Art

[0002] Organic light-emitting diodes (OLEDs) have received extensive attention due to their excellent performance in the applications of flat panel displays and solid-state light sources. The development of OLEDs has gone through three stages: fluorescent OLEDs, phosphorescent OLEDs, and thermally activated delayed fluorescence (TADF); according to simple spin statistics, the formation ratio of singlet excitons and triplet excitons in OLEDs is generally 1:3; fluorescent OLEDs can only utilize singlet excitons for luminescence, so the theoretical quantum luminescence efficiency of fluorescent OLEDs is only 25%, and the quantum luminescence efficiency is relatively low; phosphorescent OLEDs introduce heavy metals such as Ir and Pt, and can utilize 75% of triplet excitons through spin-orbit coupling, and the theoretical quantum luminescence efficiency can reach 100%, but due to the introduction of heavy metals, the cost is relatively high; the excitons of TADF materials can undergo reverse intersystem crossing from the triplet state to the singlet state, making the TADF materials theoretically reach 100% quantum luminescence efficiency and not contain heavy metals, which is a relatively advanced optoelectronic material at present.

[0003] With the development of TADF materials, molecular design strategies of twisted donor-acceptor (D-A) structures and multiple resonance (MR) structures have been proposed. In order to meet the standards of the International Telecommunication Union's Radio Communication Recommendation BT.2020 (Rec.2020), in 2015, Hetakeyama et al. constructed a π-conjugated backbone composed of alternating boron / nitrogen (B / N) atoms, achieving narrow emission spectra with a full width at half maximum of less than 20 nm, kicking off the prelude of MR-TADF. Based on this, providing a class of novel high-performance organic light-emitting materials with narrow emission spectra is crucial for the development of TADF materials. Summary of the Invention

[0004] The purpose of the present invention is to provide a class of high-performance organic light-emitting materials with narrow emission spectra and a device preparation process thereof.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] One of the technical solutions of the present invention:

[0007] A class of high-performance organic light-emitting materials with narrow emission spectra, the structural formula of which is shown in Formula Ia or Formula Ib;

[0008]

[0009] wherein, X 1 , X 2 , X 3 , X 4 , X 5 , X 6 , X 7 , X 8 , X 9 , X 10 , X 11 , X 12 , X 13 and X 14 are independently selected from: CR a and N;

[0010] wherein, Z is independently selected from: CR3R4, C═CR3R4, C═O, C═NR3, P, P(═O)R3, S, S(O), S(O)2, NR3, O, SiR3R4, Se and a direct bond;

[0011] wherein, ring B is independently selected from: C6-C 30 aromatic ring, C5-C 30 heteroaromatic ring and a combination of both;

[0012] For example: benzene ring, naphthalene ring, anthracene ring, pyrene ring, pyridine ring, pyrimidine ring, pyridazine ring, pyrrole ring, furan ring, thiophene ring;

[0013] wherein, R1, R2, R a , R b , R3 and R4 are independently selected from: H, D, OR5, N(R5)2, OSO2R5, B(OR5)2, Si(R5)3, F, Br, I, t-Bu, CF3, CN, C1-C 40 substituted alkyl, C1-C 40 substituted alkoxy, C1-C 40 substituted thioalkoxy, C2-C 40 substituted alkenyl, C2-C 40 substituted alkynyl, C6-C 60 substituted aryl and C3-C 57 substituted heteroaryl;

[0014] wherein, the C1-C 40 substituted alkyl may be substituted with one or more R5, and non-adjacent CH2 groups may be substituted with CR5═CR5, C≡C, C═O, C═S, C═Se, C═NR5, P(═O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5 and CONR5;

[0015] C1-C 40The substituted alkoxy group may be substituted with one or more R5s, and non-adjacent CH2 groups may be substituted with CR5=CR5, C≡C, C=O, C=S, C=Se, C=NR5, P(=O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5, and CONR5;

[0016] C1-C 40 The substituted thioalkoxy group may be substituted with one or more R5s, and non-adjacent CH2 groups may be substituted with CR5=CR5, C≡C, C=O, C=S, C=Se, C=NR5, P(=O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5, and CONR5;

[0017] C2-C 40 The substituted alkenyl group may be substituted with one or more R5s, and non-adjacent CH2 groups may be substituted with CR5=CR5, C≡C, C=O, C=S, C=Se, C=NR5, P(=O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5, and CONR5;

[0018] C2-C 40 The substituted alkynyl group may be substituted with one or more R5s, and non-adjacent CH2 groups may be substituted with CR5=CR5, C≡C, C=O, C=S, C=Se, C=NR5, P(=O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5, and CONR5;

[0019] C6-C 60 The substituted aryl group may be substituted with one or more R5s;

[0020] C3-C 57 The substituted heteroaryl group may be substituted with one or more R5s;

[0021] In the formula, R5 is independently selected from: H, D, OR6, OSO2R6, B(OR6)2, Si(R6)3, F, Br, I, t-Bu, CF3, CN, C1-C 40 Substituted alkyl, C1-C 40 Substituted alkoxy, C1-C 40 Substituted thioalkoxy, C2-C 40 Substituted alkenyl, C2-C 40 Substituted alkynyl, C6-C 60 Substituted aryl and C3-C 57 Substituted heteroaryl;

[0022] Wherein, C1-C40 The substituted alkyl group may be substituted with one or more R6s, and non-adjacent CH2 groups may be substituted with CR6═CR6, C≡C, C═O, C═S, C═Se, C═NR6, P(═O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6, and CONR6;

[0023] C1-C 40 The substituted alkoxy group may be substituted with one or more R6s, and non-adjacent CH2 groups may be substituted with CR6═CR6, C≡C, C═O, C═S, C═Se, C═NR6, P(═O)R(6), Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6, and CONR6;

[0024] C1-C 40 The substituted thioalkoxy group may be substituted with one or more R6s, and non-adjacent CH2 groups may be substituted with CR6═CR6, C≡C, C═O, C═S, C═Se, C═NR6, P(═O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6, and CONR6;

[0025] C2-C 40 The substituted alkenyl group may be substituted with one or more R6s, and non-adjacent CH2 groups may be substituted with CR6═CR6, C≡C, C═O, C═S, C═Se, C═NR6, P(═O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6, and CONR6;

[0026] C2-C 40 The substituted alkynyl group may be substituted with one or more R6s, and non-adjacent CH2 groups may be substituted with CR6═CR6, C≡C, C═O, C═S, C═Se, C═NR6, P(═O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6, and CONR6;

[0027] C6-C 60 The substituted aryl group may be substituted with one or more R6s;

[0028] C3-C 57 The substituted heteroaryl group may be substituted with one or more R6s;

[0029] wherein, R6 may be independently selected from: H, D, OPh, F, t-Bu, CF3, CN, C1-C5 substituted alkyl, C1-C5 substituted alkoxy, C1-C5 substituted thioalkoxy, C2-C5 substituted alkenyl, C2-C5 substituted alkynyl, C6-C18 Substituted aryl, C3-C 17 Substituted heteroaryl, N(C6-C 18 aryl)2, N(C3-C 17 heteroaryl)2, and N(C3-C 17 heteroaryl)(C6-C 18 aryl);

[0030] Wherein, the C1-C5 substituted alkyl group may be substituted with one or more D, CN, t-Bu, CF3, and F;

[0031] The C1-C5 substituted alkoxy group may be substituted with one or more D, F, CN, t-Bu, and CF3;

[0032] The C1-C5 substituted thioalkoxy group may be substituted with one or more D, F, CN, t-Bu, and CF3;

[0033] The C2-C5 substituted alkenyl group may be substituted with one or more D, F, CN, t-Bu, and CF3;

[0034] The C2-C5 substituted alkynyl group may be substituted with one or more D, F, CN, t-Bu, and CF3;

[0035] C6-C 18 The substituted aryl group may be substituted with one or more C1-C5 alkyl groups;

[0036] C3-C 17 The substituted heteroaryl group may be substituted with one or more C1-C5 alkyl groups.

[0037] Furthermore, R1, R2, R a , R b , R3, R4, and R5 may be fused with one or more R1, R2, R a , R b , R3, R4, or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic, and / or benzo-fused ring system.

[0038] Preferably, X 1 , X 2 , X 3 , X 4 , X 5 , X 6 , X 7 , X 8 , X 9 , X 10 , X 11 , X 12 , X 13 , and X 14 have n atoms as N, where n < 5.

[0039] Preferably, X 1 , X 2 , X 3 , X 4 , X 5 , X 6 , X 7 , X 8 , X 9 , X 10 , X 11 , X 12 , X 13 and X 14 have n atoms as N, where n = 0, 2 or 4.

[0040] Preferably, Z is independently selected from: a direct bond.

[0041] Preferably, R1 and R2 are the same substituents.

[0042] Preferably, R1 and R2 are independently selected from: substituted phenyl, substituted pyridyl, substituted carbazolyl, and a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system formed by fusing one or more of R1, R2 or R3 with one or more of R1, R2 or R3;

[0043] wherein, the substituted phenyl may be substituted with one or more R5;

[0044] the substituted pyridyl may be substituted with one or more R5;

[0045] the substituted pyridyl may be substituted with one or more R5;

[0046] the substituted carbazolyl may be substituted with one or more R5.

[0047] Preferably, R a , R b , R3 and R4 are independently selected from: H, Me, i-Pr, t-Bu, CN, CF3, substituted phenyl, substituted pyridyl, substituted pyrimidinyl, substituted carbazolyl, substituted triazinyl, and N(Ph)2;

[0048] wherein, the substituted phenyl may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3 and Ph;

[0049] the substituted pyridyl may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3 and Ph;

[0050] the substituted pyrimidinyl may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3 and Ph;

[0051] the substituted carbazolyl may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3 and Ph;

[0052] The substituted triazinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and Ph.

[0053] Preferably, R5 is independently selected from: H, C1-C 40 substituted alkyl, and C6-C 60 substituted aryl;

[0054] Among them, C1-C 40 substituted alkyl may be substituted with one or more R6;

[0055] C6-C 60 substituted aryl may be substituted with one or more R6.

[0056] Preferably, R5 is independently selected from: H, C1-C4 substituted alkyl, and substituted phenyl;

[0057] Among them, C1-C4 substituted alkyl may be substituted with one or more R6;

[0058] Substituted phenyl may be substituted with one or more R6.

[0059] Preferably, R5 is independently selected from: H, Me, i-Pr, t-Bu, CN, CF3, and substituted phenyl;

[0060] Among them, substituted phenyl may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and Ph.

[0061] A class of high-performance organic light-emitting materials with narrow emission spectra according to the present invention has a typical structure including:

[0062]

[0063] Preferably, a class of high-performance organic light-emitting materials with narrow emission spectra has a structural formula as shown in Formula Ia-1 or Formula Ib-1;

[0064]

[0065] Preferably, a class of high-performance organic light-emitting materials with narrow emission spectra has a structural formula as shown in Formula IIa or Formula IIb;

[0066]

[0067] In the formula, X 1 , X 2 , X 3 , X 4 , X 5 , X 6 and X 7 may be independently selected from: CR aand N, and there are n atoms of N, where n = 0, 1, 2.

[0068] Preferably, a kind of high-performance organic light-emitting material with a narrow emission spectrum has a structural formula shown in Formula IIIa, Formula IIIb, Formula IIIc, Formula IIId or Formula IIIe;

[0069]

[0070] Preferably, a kind of high-performance organic light-emitting material with a narrow emission spectrum has a structural formula shown in Formula IVa, Formula IVb, Formula IVc, Formula IVd, Formula IVe, Formula IVf, Formula IVg, Formula IVh, Formula IVi or Formula IVk;

[0071]

[0072] Preferably, a kind of high-performance organic light-emitting material with a narrow emission spectrum has a structural formula shown in Formula IVa-1, Formula IVb-1, Formula IVc-1, Formula IVd-1, Formula IVe-1, Formula IVf-1, Formula IVg-1, Formula IVh-1, Formula IVi-1 or Formula IVk-1;

[0073]

[0074] R of the present invention a , R3, R4 and R5 with one or more R a , R3, R4 or R5 condensed into a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system, a kind of high-performance organic light-emitting material with a narrow emission spectrum, typical structures include:

[0075]

[0076]

[0077]

[0078]

[0079] Preferably, a kind of high-performance organic light-emitting material with a narrow emission spectrum has a structural formula shown in Formula Va, Formula Vb, Formula Vc, Formula Vd or Formula Ve;

[0080]

[0081] Preferably, a kind of high-performance organic light-emitting material with a narrow emission spectrum has a structural formula shown in Formula VI;

[0082]

[0083] In the formula, R1, R a , R3, R4 and R5 with one or more R1, R a, R3, R4 or R5 condense to form a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system.

[0084] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIa;

[0085]

[0086] In the formula, R1, R a and R5 condense with one or more R1, R a or R3 to form a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system.

[0087] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIb;

[0088]

[0089] In the formula, R1, R a , R3, R4 and R5 condense with one or more R1, R a , R3, R4 or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system.

[0090] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIb-1, Formula VIb-2, Formula VIb-3, Formula VIb-4 or Formula VIb-5;

[0091]

[0092] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIc;

[0093]

[0094] In the formula, R1, R a and R5 condense with one or more R1, R a or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system.

[0095] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIc-1, Formula VIc-2, Formula VIc-3, Formula VIc-4 or Formula VIc-5;

[0096]

[0097] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIIa;

[0098]

[0099] In the formula, R1, R2, and R5 are fused with one or more R1, R2, or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic, and / or benzo-fused ring system;

[0100] R b and R c can be independently selected from: H, Me, i-Pr, t-Bu, CN, CF3, substituted phenyl, substituted pyridyl, substituted pyridyl, substituted pyrimidinyl, substituted triazinyl, and N(Ph)2;

[0101] Among them, the substituted phenyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3, and benzene;

[0102] The substituted pyridyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3, and benzene;

[0103] The substituted pyridyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3, and benzene;

[0104] The substituted pyrimidinyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3, and benzene;

[0105] The substituted triazinyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3, and benzene.

[0106] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIIa-1;

[0107]

[0108] In the formula, R1, R2, or R5 is fused with one or more R1 or R3 to form a monocyclic and / or polycyclic aliphatic, aromatic, and / or benzo-fused ring system;

[0109] R b and R c can be independently selected from: H, Me, i-Pr, t-Bu, CN, CF3, substituted phenyl, substituted pyridyl, substituted pyridyl, substituted pyrimidinyl, substituted triazinyl, and N(Ph)2;

[0110] Among them, the substituted phenyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3, and benzene;

[0111] The substituted pyridyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3, and benzene;

[0112] The substituted pyridyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3, and benzene;

[0113] The substituted pyrimidinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0114] The substituted triazinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl.

[0115] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VII-1, Formula VII-2, Formula VII-3, Formula VII-4, or Formula VII-5;

[0116]

[0117] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIIb;

[0118]

[0119] In the formula, R1, R2, and R5 are fused with one or more of R1, R2, or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic, and / or benzo-fused ring system;

[0120] R b and R c may be independently selected from: H, Me, i-Pr, t-Bu, CN, CF3, substituted phenyl, substituted pyridyl, substituted pyridyl, substituted pyrimidinyl, substituted triazinyl, and N(Ph)2;

[0121] Among them, the substituted phenyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0122] The substituted pyridyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0123] The substituted pyridyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0124] The substituted pyrimidinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0125] The substituted triazinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl.

[0126] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIIb-1;

[0127]

[0128] In the formula, R1 and R5 are fused with one or more R1 or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system;

[0129] R b and R c can be independently selected from: H, Me, i-Pr, t-Bu, CN, CF3, substituted phenyl, substituted pyridyl, substituted pyridyl, substituted pyrimidinyl, substituted triazinyl and N(Ph)2;

[0130] Among them, the substituted phenyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3 and benzene;

[0131] The substituted pyridyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3 and benzene;

[0132] The substituted pyridyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3 and benzene;

[0133] The substituted pyrimidinyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3 and benzene;

[0134] The substituted triazinyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3 and benzene.

[0135] Preferably, a kind of high-performance organic light-emitting material with a narrow emission spectrum has a structural formula as shown in Formula VIIc;

[0136]

[0137] In the formula, R1, R2 and R5 are fused with one or more R1, R2 or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system;

[0138] R c can be independently selected from: H, Me, i-Pr, t-Bu, CN, CF3, substituted phenyl, substituted pyridyl, substituted pyridyl, substituted pyrimidinyl, substituted triazinyl and N(Ph)2;

[0139] Among them, the substituted phenyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3 and benzene;

[0140] The substituted pyridyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3 and benzene;

[0141] The substituted pyridyl can be substituted with one or more Me, i-Pr, t-Bu, CN, CF3 and benzene;

[0142] The substituted pyrimidinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0143] The substituted triazinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl.

[0144] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIIc-1;

[0145]

[0146] In the formula, R1 and R5 are fused with one or more R1 or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic, and / or benzo-fused ring system;

[0147] R c may be independently selected from: H, Me, i-Pr, t-Bu, CN, CF3, substituted phenyl, substituted pyridyl, substituted pyridyl, substituted pyrimidinyl, substituted triazinyl, and N(Ph)2;

[0148] Among them, the substituted phenyl may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0149] The substituted pyridyl may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0150] The substituted pyridyl may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0151] The substituted pyrimidinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl;

[0152] The substituted triazinyl group may be substituted with one or more of Me, i-Pr, t-Bu, CN, CF3, and phenyl.

[0153] Preferably, a class of high-performance organic light-emitting materials with a narrow emission spectrum has a structural formula as shown in Formula VIII;

[0154]

[0155] The second technical solution of the present invention:

[0156] The synthesis method of the above-mentioned class of high-performance organic light-emitting materials with a narrow emission spectrum includes the following steps:

[0157] 1) Add R1, R2, 0.02 equivalents of Pd(II) or Pd(0), and 0.01 equivalent of Cu I to a two-necked flask, displace the oxygen in the system with an inert gas, then add a solvent, and heat the reaction overnight to obtain P1;

[0158] 2) Add the P1 obtained in step 1) and 4 equivalents of base to a solvent, and heat the reaction overnight to obtain P2;

[0159] 3) Add the P2 obtained in step 2), R3, 5 equivalents of base, and 0.02 equivalent of Cu or Pd to a solvent, and heat the reaction overnight to obtain P3;

[0160] 4) Add the P3 obtained in step 3), R4, 5 equivalents of base, and 0.05 - 0.1 equivalent of Pd(II) or Pd(0) to a two-necked flask, displace the oxygen in the system with an inert gas, then add a solvent, and heat the reaction under reflux overnight to obtain P4, namely the narrow emission spectrum high-performance organic light-emitting material.

[0161] Further, in step 1), the structural formula of the R1 is:

[0162] Further, in step 1), the structural formula of the R2 is:

[0163] Further, in step 1), the Pd(II) or Pd(0) includes one of Pd(PPh3)4, Pd2(dba)3, Pd(OAc)2, PdCl2(PPh3)2, or Pd(dppf)Cl2;

[0164] Further, in step 1), the inert gas includes one of nitrogen or argon;

[0165] Further, in step 1), the solvent includes one of THF, NMP, DMF, DMSO, or Et3N;

[0166] Further, in step 1), the temperature of the overnight heating reaction is room temperature.

[0167] Further, in step 2), the base includes one of K2CO3, K3PO4, NaOt-Bu, KOt-Bu, Cs2CO3, KOH, NaOH, or DBU;

[0168] Further, in step 2), the solvent includes one of DCM, THF, MeOH, DMF, or DMSO;

[0169] Further, in step 2), the temperature of the overnight heating reaction is room temperature.

[0170] Further, in step 3), the structural formula of the R3 is:

[0171] Further, in step 3), the base includes one of K2CO3, K3PO4, NaOt-Bu, KOt-Bu, Cs2CO3, KOH, NaOH or DBU;

[0172] Further, in step 3), the solvent includes one of THF, acetonitrile, DMF, DMSO or MeOH;

[0173] Further, in step 3), the temperature of the overnight heating reaction is room temperature.

[0174] Further, in step 4), the structural formula of R4 is:

[0175] Further, in step 4), the base includes one of K2CO3, K3PO4, NaOt-Bu, KOt-Bu, Cs2CO3, KOH, NaOH or DBU;

[0176] Further, in step 4), the Pd(Ⅱ) or Pd(0) includes one of Pd(PPh3)4, Pd2(dba)3, Pd(OAc)2, PdCl2(PPh3)2 or Pd(dppf)Cl2;

[0177] Further, in step 4), the inert gas includes one of nitrogen or argon;

[0178] Further, in step 4), the solvent includes one of toluene or xylene;

[0179] Further, in step 4), the temperature of the overnight heating reaction is room temperature.

[0180] The synthesis route of the above-mentioned class of high-performance organic light-emitting materials with narrow emission spectra is as follows:

[0181]

[0182] The third technical solution of the present invention:

[0183] The application of the above-mentioned class of high-performance organic light-emitting materials with narrow emission spectra as light emitters, absorbers, host materials, electron transport materials, hole injection materials or hole blocking materials in optoelectronic devices.

[0184] Further, the optoelectronic devices include: organic light-emitting devices, optical sensors, solar cells, lighting elements, organic thin-film transistors, organic field-effect transistors, information tags, electronic artificial skin sheets, sheet-type scanners and electronic papers.

[0185] The fourth technical solution of the present invention:

[0186] A composition is composed of the above-mentioned narrow emission spectrum high-performance organic light-emitting material, triplet-triplet annihilation (TTA) host material, TADF material, dye and solvent.

[0187] The fifth technical solution of the present invention:

[0188] An optoelectronic device includes a substrate, an anode, a light-emitting layer and a cathode which are stacked;

[0189] Wherein, the light-emitting layer contains the above-mentioned narrow emission spectrum high-performance organic light-emitting material or the above-mentioned composition.

[0190] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0191] A class of narrow emission spectrum high-performance organic light-emitting materials of the present invention are pure organic molecules without any metal ions, which can improve the luminescence performance of organic light-emitting materials while reducing costs;

[0192] A class of narrow emission spectrum high-performance organic light-emitting materials of the present invention exhibit emission maxima in the blue spectral range, sky-blue spectral range, green spectral range, yellow spectral range or red spectral range; specifically, a class of narrow emission spectrum high-performance organic light-emitting materials of the present invention exhibit emission maxima between 450 nm and 470 nm, or between 520 nm and 540 nm, and the photoluminescence quantum yield can reach 50%.

[0193] Applying a class of narrow emission spectrum high-performance organic light-emitting materials of the present invention to optoelectronic devices, the optoelectronic devices have high efficiency, high stability and high color purity. Specific embodiments

[0194] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0195] In the present invention, the technical term "aryl" can be understood as any monocyclic, bicyclic or polycyclic aromatic group without heteroatoms; in the context of the present invention, "aryl" contains 6 to 60 aryl ring atoms, and the specific number of aryl ring atoms can be given as a subscript number in the definition of certain substituents;

[0196] In the present invention, the technical term "heteroaryl" can be understood as any monocyclic, bicyclic or polycyclic aromatic group having 1 to 3 heteroatoms; in the context of the present invention, the "heteroaryl" group contains 5 to 60 aromatic ring atoms, and the specific number of aromatic ring atoms can be given as a subscript number in the definition of certain substituents. The heteroatoms on the same "heteroaryl" can be the same or different and can be independently selected from: N, O, and S;

[0197] In the present invention, the technical term "arylene" can be understood as a divalent aryl group having two binding sites with other molecular structures and used as a linking group structure;

[0198] In the present invention, the technical term "aryl or heteroaryl" is derived from: benzene, naphthalene, anthracene, phenanthrene, pyrene, dihydropyrene, perylene, fluoranthene, benzanthracene, benzophenanthrene, tetracene, pentacene, benzopyrene, furan, benzofuran, isobenzofuran, dibenzofuran, thiophene, benzothiophene, isobenzothiophene, dibenzothiophene, pyrrole, indole, isoindole, carbazole, pyridine, quinoline, isoquinoline, acridine, phenanthridine, benzo-5,6-quinoline, benzo-6,7-quinoline, benzo-7,8-quinoline, phenothiazine, phenoxazine, pyrazole, indazole, imidazole, benzimidazole, naphthimidazole, phenanthrimidazole, pyridinimidazole, pyrazinimidazole, quinoxalinimidazole, oxazole, benzoxazole, naphthoxazole, anthroxazole, phenanthroxazole, isoxazole, 1,2-thiazole, 1,3-thiazole, benzothiazole, pyridazine, benzopyridazine, pyrimidine, benzopyrimidine, 1,3,5-triazine, quinoxaline, pyrazine, phenazine, naphthyridine, carboline, benzocarboline, phenanthroline, 1,2,3-triazole, 1,2,4-triazole, benzotriazole, 1,2,3-oxadiazole, 1,2,4-oxadiazole, 1,2,5-oxadiazole, 1,2,3,4-tetrazine, purine, pteridine, indolizine, benzothiadiazole, and combinations of the above groups;

[0199] In the present invention, the technical term "ring group" can be understood as any monocyclic group, bicyclic group, and polycyclic group;

[0200] In the present invention, the technical term "biphenyl" can be understood as o-biphenyl, m-biphenyl, and p-biphenyl, where o, m, and p are defined according to the relative binding sites of the two phenyl groups;

[0201] In the present invention, the technical term "terphenyl" can be understood as 3-o-terphenyl, 4-o-terphenyl, 4-m-terphenyl, 5-m-terphenyl, 2-m-terphenyl, and 2-p-terphenyl, where o, m, and p are defined according to the relative binding sites of the three phenyl groups, and where "2-", "3-", "4-", and "5-" are defined according to the relative binding sites with other groups, that is:

[0202]

[0203] Among them, # represents the relative binding site with other groups;

[0204] In the present invention, the technical term "naphthyl" can be understood as 1-naphthyl and 2-naphthyl, where "1-" and "2-" are defined according to the relative binding site with other groups, that is:

[0205]

[0206] Among them, # represents the relative binding site with other groups;

[0207] In the present invention, the technical term "anthryl" can be understood as 1-anthryl, 2-anthryl and 9-anthryl, where "1-", "2-" and "9-" are defined according to the relative binding site with other groups, that is:

[0208]

[0209] Among them, # represents the relative binding site with other groups;

[0210] In the present invention, the technical term "alkyl" can be understood as any straight-chain, branched-chain, and cyclic alkyl substituent, including: methyl (Me), ethyl (Et), n-propyl (n-Pr), isopropyl (i-Pr), cyclopropyl, n-butyl (n-Bu), isobutyl (i-Bu), sec-butyl (s-Bu), tert-butyl (t-Bu), cyclobutyl, 2-methylbutyl, n-pentyl, sec-pentyl, tert-pentyl, 2-pentyl, neopentyl, cyclopentyl, n-hexyl, sec-hexyl, tert-hexyl, 2-hexyl, 3-hexyl, neohexyl, cyclohexyl, 1-methylcyclopentyl, 2-methylpentyl, n-heptyl, 2-heptyl, 3-heptyl, 4-heptyl, cycloheptyl, 1-methylcyclohexyl, n-octyl, 2-ethylhexyl, cyclooctyl, 1-bicyclo[2,2,2]octyl, 2-bicyclo[2,2,2]octyl, 2-(2,6-dimethyl)octyl, 3-(3,7-dimethyl)octyl, adamantyl, 2,2,2-trifluoroethyl, 1,1-dimethyl-n-hex-1-yl, 1,1-dimethyl-n-hept-1-yl, 1,1-dimethyl-n-oct-1-yl, 1,1-dimethyl-n-dec-1-yl, 1,1-dimethyl-n-dodec-1-yl, 1,1-dimethyl-n-tetradec-1-yl, 1,1-dimethyl-n-hexadec-1-yl, 1,1-dimethyl-n-octadec-1-yl, 1,1-diethyl-n-hex-1-yl, 1,1-diethyl-n-hept-1-yl, 1,1-diethyl-n-oct-1-yl, 1,1-diethyl-n-dec-1-yl, 1,1-diethyl-n-dodec-1-yl, 1,1-diethyl-n-tetradec-1-yl, 1,1-diethyl-n-hexadec-1-yl, 1,1-diethyl-n-octadec-1-yl, 1-(n-propyl)-cyclohex-1-yl, 1-(n-butyl)-cyclohex-1-yl, 1-(n-hexyl)-cyclohex-1-yl, 1-(n-octyl)-cyclohex-1-yl, and 1-(n-decyl)-cyclohex-1-yl;

[0211] In the present invention, the technical term "alkenyl" can be understood as any straight-chain, branched-chain, and cyclic alkenyl substituent, including: vinyl, propenyl, butenyl, pentenyl, cyclopentenyl, hexenyl, cyclohexenyl, heptenyl, cycloheptenyl, octenyl, cyclooctenyl, and cyclooctadienyl;

[0212] In the present invention, the technical term "alkynyl" can be understood as any straight-chain, branched-chain, and cyclic alkynyl substituent, including: ethynyl, propynyl, butynyl, pentynyl, hexynyl, heptynyl, and octynyl;

[0213] In the present invention, the technical term "alkoxy" can be understood as any straight-chain, branched-chain, and cyclic alkoxy substituent, including: methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy, tert-butoxy, and 2-methylbutoxy;

[0214] In the present invention, the technical term "thioalkoxy" can be understood as a thioalkoxy substituent in which O in any straight-chain, branched-chain, and cyclic alkoxy substituent is replaced by S;

[0215] In the present invention, the technical terms "halogen" and "halogenated" can be understood as fluorine (F), chlorine (Cl), bromine (Br), and iodine (I);

[0216] In the present invention, hydrogen (H) can be replaced by deuterium (D).

[0217] Example 1

[0218] A high-performance organic light-emitting material P4-1 with a narrow emission spectrum

[0219] 1) Add R1, R2, 0.02 equivalents of Pd(II) or Pd(0), and 0.01 equivalent of Cu I to a two-necked flask. Replace the oxygen in the system with an inert gas, then add a solvent, and heat the reaction overnight to obtain P1;

[0220] 2) Add P1 obtained in step 1) and 4 equivalents of a base to a solvent, and heat the reaction overnight to obtain P2;

[0221] 3) Add P2 obtained in step 2), R3, 5 equivalents of a base, and 0.02 equivalent of Cu or Pd to a solvent, and heat the reaction overnight to obtain P3;

[0222] 4) Add P3 obtained in step 3), R4, 5 equivalents of a base, and 0.1 equivalent of Pd(II) or Pd(0) to a two-necked flask. Replace the oxygen in the system with an inert gas, then add a solvent, and heat the reaction under reflux overnight to obtain the high-performance organic light-emitting material P4-1 with a narrow emission spectrum.

[0223] Example 1 The synthesis route of a high-performance organic light-emitting material P4-1 with a narrow emission spectrum is as follows:

[0224]

[0225] The structure characterization and optoelectronic properties of the high-performance organic light-emitting material with a narrow emission spectrum prepared in Example 1 were studied as follows:

[0226] The structure of the synthesized material P4-1 was characterized by nuclear magnetic resonance hydrogen spectrum and carbon spectrum, and high-resolution mass spectrometry. The photophysical properties of P4-1 were studied. The ultraviolet-visible absorption spectrum and fluorescence emission spectrum of P4-1 were measured in a toluene solution (10 -5 M). The emission maximum of P4-1 was 470 nm, and the full width at half maximum was 19 nm, showing obvious blue emission with a narrow emission spectrum;

[0227] An OLED device was fabricated using the structure of ITO / HATCN(5nm) / TAPC(30nm) / TCTA(5nm) / mCP(5nm) / EML(20nm) / PPF(5nm) / TmPyPB(30nm) / LiF(1nm) / Al with P4-1. When the doping concentration of P4-1 was 1 wt%, the maximum external quantum efficiency (EQE) was obtained, which was 23.6%, the CIE coordinates were (0.123, 0.320), and the full width at half maximum was 31 nm.

[0228] Examples 2 - 7

[0229] Using the same synthetic route as in Example 1, high-performance organic light-emitting materials P4-2 - P4-7 with narrow emission spectra were prepared. The structural formulas of P4-2 - P4-7 are shown as follows;

[0230]

[0231] The structural characterization and optoelectronic properties of the high-performance organic light-emitting materials with narrow emission spectra prepared in Examples 2 - 7 were studied as follows:

[0232] The structures of the synthesized materials P4-2 - P4-7 were characterized by nuclear magnetic resonance hydrogen and carbon spectra and high-resolution mass spectrometry. The photophysical properties of P4-2 - P4-7 were studied. In toluene solution (10 -5 M), the ultraviolet-visible absorption spectra and fluorescence emission spectra of P4-2 - P4-7 were measured. The emission maximum of P4-2 was 412 nm, and the full width at half maximum was 17 nm, showing obvious blue emission with a narrow emission spectrum; the emission maximum of P4-3 was 436 nm, and the full width at half maximum was 17 nm, showing obvious blue emission with a narrow emission spectrum; the emission maximum of P4-4 was 440 nm, and the full width at half maximum was 18 nm, showing obvious blue emission with a narrow emission spectrum; the emission maximum of P4-5 was 452 nm, and the full width at half maximum was 19 nm, showing obvious blue emission with a narrow emission spectrum; the emission maximum of P4-6 was 487 nm, and the full width at half maximum was 28 nm, showing obvious blue emission with a narrow emission spectrum; the emission maximum of P4-7 was 462 nm, and the full width at half maximum was 18 nm, showing obvious blue emission with a narrow emission spectrum;

[0233] The OLED device was fabricated with the structure of ITO / HATCN(5nm) / TAPC(30nm) / TCTA(5nm) / mCP(5nm) / EML(20nm) / PPF(5nm) / TmPyPB(30nm) / LiF(1nm) / Al by using P4-2 to P4-7. Among them, the maximum external quantum efficiency (EQE) of 8.7% was obtained when the doping concentration of P4-2 was 1 wt%; the maximum external quantum efficiency (EQE) of 10.6% was obtained when the doping concentration of P4-3 was 1 wt%; the maximum external quantum efficiency (EQE) of 11.8% was obtained when the doping concentration of P4-4 was 1 wt%; the maximum external quantum efficiency (EQE) of 15.3% was obtained when the doping concentration of P4-5 was 1 wt%; the maximum external quantum efficiency (EQE) of 20% was obtained when the doping concentration of P4-6 was 1 wt%; the maximum external quantum efficiency (EQE) of 19.6% was obtained when the doping concentration of P4-7 was 1 wt%; the maximum external quantum efficiency (EQE) of 26.8% was obtained when the doping concentration of P4-8 was 1 wt%; the maximum external quantum efficiency (EQE) of 21% was obtained when the doping concentration of P4-7 was 1 wt%.

[0234] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific embodiments of the present invention. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A class of high-performance organic light-emitting materials with narrow emission spectra, characterized in that, The structural formula of the narrow emission spectrum high-performance organic light-emitting material is shown as Formula Ia or Formula Ib; wherein, X 1 、X 2 、X 3 、X 4 、X 5 、X 6 、X 7 、X 8 、X 9 、X 10 、X 11 、X 12 、X 13 and X 14 are independently selected from: CR a and N; In the formula, Z is independently selected from: CR3R4, C=CR3R4, C=O, C=NR3, P, P(=O)R3, S, S(O), S(O)2, NR3, O, SiR3R4, Se and a direct bond; In the formula, ring B is independently selected from: C6-C 30 aromatic ring, C5-C 30 heteroaromatic ring, and a combination of both; In the formula, R1, R2, R a , R b , R3 and R4 are independently selected from: H, D, OR5, N(R5)2, OSO2R5, B(OR5)2, Si(R5)3, F, Br, I, t-Bu, CF3, CN, C1-C 40 substituted alkyl, C1-C 40 substituted alkoxy, C1-C 40 substituted thioalkoxy, C2-C 40 substituted alkenyl, C2-C 40 substituted alkynyl, C6-C 60 substituted aryl and C3-C 57 substituted heteroaryl; Among them, C1 to C 40 The substituted alkyl group may be substituted with one or more R5s, and non-adjacent CH2 groups may be substituted with CR5═CR5, C≡C, C═O, C═S, C═Se, C═NR5, P(═O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5, and CONR5; C1 to C 40 The substituted alkoxy group may be substituted with one or more R5s, and non-adjacent CH2 groups may be substituted with CR5=CR5, C≡ C, C=O, C=S, C=Se, C=NR5, P(=O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5 and CONR5; C1 to C 40 The substituted thioalkoxy group may be substituted with one or more R5s, and non-adjacent CH2 groups may be substituted with CR5= CR5, C≡C, C=O, C=S, C=Se, C=NR5, P(=O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5 and CONR5; C2 - C 40 The substituted alkenyl group may be substituted with one or more R5s, and non - adjacent CH2 groups may be substituted with CR5 = CR5, C≡ C, C=O, C=S, C=Se, C=NR5, P(=O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5 and CONR5; C2 - C 40 The substituted alkynyl group may be substituted with one or more R5, and non - adjacent CH2 groups may be substituted with CR5 = CR5, C≡ C, C=O, C=S, C=Se, C=NR5, P(=O)R5, Si(R5)2, Ge(R5)2, Sn(R5)2, SO, SO2, O, S, NR5 and CONR5; C6-C 60 The substituted aryl may be substituted with one or more R5s; C3-C 57 The substituted heteroaryl may be substituted with one or more R5s; Wherein, R5 is independently selected from: H, D, OR6, OSO2R6, B(OR6)2, Si(R6)3, F, Br, I, t-Bu, CF3, CN, C1-C 40 substituted alkyl, C1-C 40 substituted alkoxy, C1-C 40 substituted thioalkoxy, C2-C 40 substituted alkenyl, C2-C 40 substituted alkynyl, C6-C 60 substituted aryl and C3-C 57 substituted heteroaryl; Among them, C1 to C 40 The substituted alkyl group may be substituted with one or more R6, and non-adjacent CH2 groups may be substituted with CR6=CR6, C≡C, C=O, C=S, C=Se, C=NR6, P(=O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6, and CONR6; C1 to C 40 The substituted alkoxy group may be substituted with one or more R6s, and non-adjacent CH2 groups may be substituted with CR6=CR6, C≡ C, C=O, C=S, C=Se, C=NR6, P(=O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6 and CONR6; C1 to C 40 The substituted thioalkoxy group may be substituted with one or more R6s, and non-adjacent CH2 groups may be substituted with CR6═ CR6, C≡C, C=O, C=S, C=Se, C=NR6, P(=O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6 and CONR6; C2 to C 40 The substituted alkenyl may be substituted with one or more R6s, and non-adjacent CH2 groups may be substituted with CR6=CR6, C≡ C, C=O, C=S, C=Se, C=NR6, P(=O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6 and CONR6; C2 - C 40 The substituted alkynyl group may be substituted with one or more R6, and the non - adjacent CH2 groups may be substituted with CR6 = CR6, C≡ C, C=O, C=S, C=Se, C=NR6, P(=O)R6, Si(R6)2, Ge(R6)2, Sn(R6)2, SO, SO2, O, S, NR6 and CONR6; C6 to C 60 The substituted aryl may be substituted with one or more R6s; C3 to C 57 The substituted heteroaryl may be substituted with one or more R6; Wherein, R6 can be independently selected from: H, D, OPh, F, t-Bu, CF3, CN, C1-C5 substituted alkyl, C1-C5 substituted alkoxy, C1-C5 substituted thioalkoxy, C2-C5 substituted alkenyl, C2-C5 substituted alkynyl, C6-C 18 substituted aryl, C3-C 17 substituted heteroaryl, N(C6-C 18 aryl)2, N(C3-C 17 heteroaryl)2, and N(C3-C 17 heteroaryl)(C6-C 18 aryl); Wherein, the C1-C5 substituted alkyl group may be substituted with one or more D, CN, t-Bu, CF3 and F; The C1-C5 substituted alkoxy group may be substituted with one or more D, F, CN, t-Bu and CF3; The C1-C5 substituted thioalkoxy group may be substituted with one or more D, F, CN, t-Bu and CF3; The C2-C5 substituted alkenyl group may be substituted with one or more D, F, CN, t-Bu and CF3; The C2-C5 substituted alkynyl group may be substituted with one or more D, F, CN, t-Bu and CF3; C6-C 18 The substituted aryl may be substituted with one or more C1-C5 alkyl groups; C3-C 17 The substituted heteroaryl may be substituted with one or more C1-C5 alkyl groups.

2. The high-performance organic light-emitting material with a narrow emission spectrum according to claim 1, wherein The R1, R2, R a , R b , R3, R4 and R5 may be fused with one or more of R1, R2, R a , R b , R3, R4 or R5 to form a monocyclic and / or polycyclic aliphatic, aromatic and / or benzo-fused ring system.

3. A method for synthesizing a narrow emission spectrum high-performance organic light-emitting material according to any one of claims 1 to 2, characterized in that, Comprising the following steps: 1) Add R1, R2, 0.02 equivalents of Pd(II) or Pd(0) and 0.01 equivalents of CuI into a two-necked flask, displace the oxygen in the system with an inert gas, then add a solvent, and heat the reaction overnight to obtain P1; 2) Add the P1 obtained in step 1) and 4 equivalents of base into a solvent, and heat the reaction overnight to obtain P2; 3) Add the P2 obtained in step 2), R3, 5 equivalents of base, and 0.02 equivalents of Cu or Pd into a solvent, and heat the reaction overnight to obtain P3; 4) Add the P3 obtained in step 3), R4, 5 equivalents of base, and 0.05 - 0.1 equivalents of Pd(II) or Pd(0) into a two-necked flask, displace the oxygen in the system with an inert gas, then add a solvent, and heat the reaction under reflux overnight to obtain P4, which is the narrow emission spectrum high-performance organic light-emitting material.

4. The synthesis method of a class of narrow emission spectrum high-performance organic light-emitting materials according to claim 3, characterized in that, In step 1), the structural formula of R1 is: The structural formula of R2 is: The Pd(II) or Pd(0) includes one of Pd(PPh3)4, Pd2(dba)3, Pd(OAc)2, PdCl2(PPh3)2 or Pd(dppf)Cl2; the inert gas includes one of nitrogen or argon; the solvent includes one of THF, NMP, DMF, DMSO or Et3N; the temperature of the overnight heating reaction is room temperature; in step 2), the base includes one of K2CO3, K3PO4, NaOt-Bu, KOt-Bu, Cs2CO3, KOH, NaOH or DBU; the solvent includes one of DCM, THF, MeOH, DMF or DMSO; the temperature of the overnight heating reaction is room temperature; in step 3), the structural formula of R3 is: The base includes one of K2CO3, K3PO4, NaOt-Bu, KOt-Bu, Cs2CO3, KOH, NaOH or DBU; the solvent includes one of THF, acetonitrile, DMF, DMSO or MeOH; the temperature of the overnight heating reaction is room temperature; in step 4), the structural formula of R4 is: The base includes one of K2CO3, K3PO4, NaOt-Bu, KOt-Bu, Cs2CO3, KOH, NaOH or DBU; the Pd(II) or Pd(0) includes one of Pd(PPh3)4, Pd2(dba)3, Pd(OAc)2, PdCl2(PPh3)2 or Pd(dppf)Cl2; the inert gas includes one of nitrogen or argon; the solvent includes one of toluene or xylene; the temperature of the overnight heating reaction is room temperature.

5. Application of the narrow emission spectrum high-performance organic light-emitting material according to any one of claims 1 - 2 as a light-emitting emitter, absorber, host material, electron transport material, hole injection material, or hole blocking material in an optoelectronic device.

6. The application according to claim 5, characterized in that The optoelectronic device includes: an organic electroluminescent device, an optical sensor, a solar cell, a lighting element, an organic thin-film transistor, an organic field-effect transistor, an information tag, an electronic artificial skin sheet, a sheet-type scanner, and an electronic paper.

7. A composition, characterized in that, The composition consists of the narrow emission spectrum high-performance organic light-emitting material according to any one of claims 1 - 2, a triplet-triplet annihilation host material, a TADF material, a dye, and a solvent.

8. An optoelectronic device, characterized in that, The optoelectronic device includes a substrate, an anode, a light-emitting layer, and a cathode stacked; wherein, the light-emitting layer contains the narrow emission spectrum high-performance organic light-emitting material according to any one of claims 1 - 2 or the composition according to claim 7.

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