736928-22-6Relevant articles and documents
A novel host material with high thermal stability for green electrophosphorescent device
Liang, Wenqing,Gao, Zhixiang,Song, Wenxuan,Su, Jianhua,Guo, Kunpeng,Dong, Qingchen,Huang, Jinhai,Wong, Wai-Yeung
, p. 1505 - 1510 (2016)
A new bipolar host material based on triphenylamine, fluorene and 1,2-diphenyl-1H-benzo[d]imidazole moieties, N,N-diphenyl-4-(9-phenyl-2-(4-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)-9H-fluoren-9-yl)aniline (DPPBIPFA), was designed and synthesized. The as-synthesized material was well characterized by1H and13C NMR spectroscopy, high-resolution mass spectrometry and thermogravimetric analysis, respectively. The photophysical and electrochemical properties of the material were also studied. The material exhibited an excellent thermal stability (Td= 475 °C), electrochemical stability and high triplet energy (2.68 eV). A green phosphorescent organic light-emitting diode (PhOLED) device based on DPPBIPFA as the host material and Ir(ppy)3as the dopant was fabricated, which displayed favorable electrophosphorescent properties with a turn-on voltage of 3.75 V, a maximum brightness of 1685 cd/m2and a maximum current efficiency of 4.26 cd/A.
Ink Composition and Method for Manufacturing Organic Light Emitting Device
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Paragraph 0215-0216, (2021/02/19)
The present specification relates to an ink composition including: a compound represented by Formula 1; and a solvent represented by the Formula 2, and a method for manufacturing an organic light emitting device formed by using the ink composition.
Supramolecular Non-Helical One-Dimensional Channels and Microtubes Assembled from Enantiomers of Difluorenol
Wang, Sha-Sha,Liu, Yi-Ran,Yu, Xiang,Zhou, Yang,Zhong, Tao-Tao,Li, Yue-Tian,Xie, Ling-Hai,Huang, Wei
supporting information, p. 3979 - 3983 (2020/12/25)
The design and assembly of photoelectro-active molecular channel structures is of great importance because of their advantages in charge mobility, photo-induced electron transfer, proton conduction, and exciton transport. Herein, we report the use of racemic 9,9′-diphenyl-[2,2′-bifluorene]-9,9′-diol (DPFOH) enantiomers to produce non-helical 1D channel structures. Although the individual molecule does not present any molecular symmetry, two pairs of racemic DPFOH enantiomers can form a C2-symmetric closed loop via the stereoscopic herringbone assembly. Thanks to the special symmetry derived from the enantiomer pairs, the multiple supramolecular interactions, and the padding from solvent molecules, this conventionally unstable topological structure is achieved. The etching of solvent in 1D channels leads to the formation of microtubes, which exhibit a significant lithium-ion conductivity of 1.77×10?4 S cm, indicating the potential research value of this novel 1D channel structure.