1153-85-1Relevant articles and documents
Pyridyl Pyrrolide Boron Complexes: The Facile Generation of Thermally Activated Delayed Fluorescence and Preparation of Organic Light-Emitting Diodes
Shiu, Yi-Jiun,Cheng, Yung-Chen,Tsai, Wei-Lung,Wu, Chung-Chih,Chao, Chun-Tien,Lu, Chin-Wei,Chi, Yun,Chen, Yi-Ting,Liu, Shih-Hung,Chou, Pi-Tai
, p. 3017 - 3021 (2016)
The electron positive boron atom usually does not contribute to the frontier orbitals for several lower-lying electronic transitions, and thus is ideal to serve as a hub for the spiro linker of light-emitting molecules, such that the electron donor (HOMO)
Efficient thermally activated delayed fluorescence of functional phenylpyridinato boron complexes and high performance organic light-emitting diodes
Shiu, Yi-Jiun,Chen, Yi-Ting,Lee, Wei-Kai,Wu, Chung-Chih,Lin, Tzu-Chieh,Liu, Shih-Hung,Chou, Pi-Tai,Lu, Chin-Wei,Cheng, I-Chen,Lien, Yi-Jyun,Chi, Yun
, p. 1452 - 1462 (2017)
A new series of functional phenylpyridinato boron complexes possessing thermally activated delayed fluorescence (TADF) has been strategically designed and synthesized. These boron complexes utilize phenylpyridine as the electron acceptor (A) that links to carbazole or triphenyl amine as the electron donor (D) via a core boron atom, forming four-coordinate neutral boron complexes. The selection of boron to spatially separate the donor and acceptor takes advantage of facile functionalization. The TADF properties of the resulting D-A functional materials in various solvents have been investigated via their emission spectra and associated relaxation dynamics. The results show that the operation of TADF is strongly solvent polarity dependent in fluid states, and several underlying mechanisms are discussed. OLEDs fabricated by fppyBTPA and dfppyBTPA show EL efficiencies of up to (20.2%, 63.9 cd A?1, 66.9 lm W?1) and (26.6%, 88.2 cd A?1, 81.5 lm W?1), respectively, in which a nearly 27% EQE for the dfppyBTPA device is among the most efficient TADF OLEDs so far.
Method for synthesizing high-purity 3-bromine-N-phenylcarbazole
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Paragraph 0049-0084, (2021/01/24)
The invention discloses a method for synthesizing high-purity 3-bromo-N-phenylcarbazole, and belongs to the technical field of chemistry. The method comprises the following steps: dissolving N-phenylcarbazole in a solvent, sequentially adding a brominatin
Preparation method of 3 - bromo - N - phenyl carbazole
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, (2021/10/11)
The invention relates to a preparation method of 3 -bromo - N -phenyl carbazole, and belongs to the technical field of organic chemistry. To the invention, diphenylamine serves as a starting raw material, and 2 -bromophenylaniline is obtained through bromination reaction. Then, intramolecular cyclization is carried out to obtain carbazole. Then, 3 - bromocarbazole is obtained by bromination reaction. Finally, a substituted 3 - bromo - N -phenyl carbazole is obtained. By controlling the concentration and reaction environment of the reactants, the selectivity of the reaction site is effectively improved, the used raw materials are simple and easy to obtain, the preparation period is relatively short, and the reaction process is simple and easy to control.