1700-02-3Relevant articles and documents
Synthesis, photophysical and electrochemical properties of novel carbazole-triazine based high triplet energy, solution-processable materials
Oner, Saliha,Aydemir, Murat,Yesil, Fatih,Sahin, Cigdem,Varlikli, Canan
, p. 92 - 99 (2018)
A series of molecules; tBuCz1SiTrz, tBuCz2SiTrz and tBuCz3SiTrz, which contain carbazole unit as hole-transporting group (donor-D) and triazine unit as electron transporting group (acceptor-A) were synthesized and characterized as high-triplet energy (>2.9 eV), solution-processable bipolar emitting materials. The conjugation between the D-A groups was interrupted by using bulky tetraphenylsilane groups as spacer aiming to obtain large bandgap and high-triplet energy. The photophysical behaviors of the molecules were investigated by UV-Vis absorption, photoluminescence, phosphorescence, photoluminescence quantum yield and lifetime measurements. Solvent polarity effects were investigated on the intramolecular charge transfer (ICT) behaviour and large solvatochromic effect was observed with the increasing solvent polarity. Electrochemical properties were determined by cyclic voltammetry. All molecules showed oxidation bands arise from the carbazole groups. Reduction bands were originated from the triazine groups and the intramolecular charge transfer between D-A groups. Photophysical, electrochemical and computational characterizations addressed that tBuCz2SiTrz has the weakest ICT character, highest photoluminescence quantum yield (PLQY) and charge balance.
Synthesis method of 2, 4-dihalogen-6-aryl substituted triazine derivative
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, (2021/02/10)
The invention belongs to the technical field of compound synthesis, and particularly discloses a synthesis method of a 2, 4-dihalogen-6-aryl substituted triazine derivative. The synthesis method comprises the following steps: generating an intermediate triazine diketone compound from an aryl formate compound and biuret under the action of alkali, and reacting under the action of a halogenating reagent to obtain the 2, 4-dihalogen-6-aryl substituted triazine derivative. The method has the characteristics of cheap and accessible raw materials, can greatly lower the production cost, has the advantages of mild reaction conditions, single reaction product, fewer byproducts and no impurity removal difficulty, is simple in technological operation, can easily obtain the high-purity product, and issuitable for large-scale industrial production.
Preparation and application of novel electron acceptor material
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Paragraph 0016; 0017, (2021/07/31)
The invention belongs to the technical field of organic electroluminescent devices, and discloses a novel electron-deficient acceptor material and an application thereof in organic electroluminescent devices. The acceptor has a structure represented by general formulas (I) and (II). In the general formulas (I) and (II), X and Y can be respectively a C atom or an N atom; R1, R2, R3, B1, B2 and B3 are respectively and independently alkyl, amino, imino, a deuterated compound, an unsubstituted or substituted five-membered aromatic ring, a six-membered aromatic ring, a fused ring, aniline, an aniline derivative, diphenylamine and a diphenylamine derivative, wherein B1, B2 and B3 can have a general formula structure described in the specifications of the invention; and R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are respectively and independently ahydrogen atom, a deuterium atom, alkyl, a deuterated compound, an aromatic ring, a fused ring, aniline, an aniline derivative, diphenylamine and a diphenylamine derivative.
Heterocyclic com pounds and organic light-emitting diode including the same
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Paragraph 0165-0171, (2021/07/27)
The present invention relates to a novel heterocyclic compound and an organic light emitting element including the same as a light-emitting material and, more specifically, to a heterocyclic compound having excellent light emission properties, such as a driving voltage, light emission efficiency, and service life, and an organic light emitting element including the same. Since the heterocyclic compound according to the present invention is more stable compared to conventional materials and has the excellent light emission properties for the driving voltage or current efficiency, and service life, the organic light emitting element including the same can be more stably driven in a low-voltage and light emission efficiency can be improved.