1123652-64-1Relevant academic research and scientific papers
Novel quinoxaline luminescent material as well as preparation method and application thereof
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Paragraph 0039-0041, (2020/11/23)
The invention belongs to the field of organic semiconductor materials, and discloses a novel quinoxaline organic light-emitting material and a preparation method and application thereof. The quinoxaline luminescent material has a molecular structural formula shown in the specification, wherein R substituent is selected from one of halogen, substituted aromatic hydrocarbon with 5-30 carbon atoms, aryloxy with 6-50 ring atoms, aromatic amine with 5-30 carbon atoms, boron aromatic hydrocarbon with 6-20 carbon atoms, or aromatic heterocyclic group with 5-40 ring atoms. The organic light-emitting material disclosed by the invention has symmetrical and asymmetric functionalized quinoxaline molecular structures, substituent groups are introduced into specific 6 and 7 sites, the conjugation lengthis increased, and the coplanarity of molecules is destroyed, so that pi-pi accumulation is inhibited, the light-emitting efficiency and quantum yield of the material are improved, and the color regulation of the light-emitting material is relatively wide; therefore, the prepared organic luminescent material has good thermostability in air, is high in color purity and excellent in optical performance.
A quinoxaline unit containing organic thermal delay fluorescent material and its application
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Paragraph 0059; 0061; 0075; 0076, (2018/12/13)
The invention relates to a quinoxaline unit containing organic thermally activated delayed fluorescent material and an application thereof. The organic thermally activated delayed fluorescent material, which contains a quinoxaline unit and has good light
Synthesis and investigation of mass spectra of some nitrogen heterocycles
Hasanen,Ibrahim
experimental part, p. 337 - 351 (2009/09/06)
2,3-DIPHENYL-1, 2-dihydro-quinoxaline (2), 2, 3-diphenyl-quinoxaline (3) and 2, 3-diphenyl-1, 2, 3, 4-tetrahydroquinoxaline (4) were prepared via the reaction of benzoin with o-phenylene diamine under different reaction conditions. Acylation of 2 and 4 with acetic anhydride yielded the corresponding N-acetyl (5) and N, N-1, 4-diacetyl derivative (7), respectively. Bromination of 2 with bromine gave the corresponding 6, 7-dibromo-2,3- diphenyl-quinoxaline (6). 2, 3, 5, 6-tetraphenylpyrazine (8) and 1-(benzylidene) amino-4, 5-diphenyl-1,5-dihydro-imidazoldine-2-thione (9) were synthesized by treatment of benzoin (1) with thiourea and benzaldehyde-thiosemicarbazone. The electron impact mass spectra of both of the above series of compounds have also been recorded and their fragmentation pattern is discussed.
