Multistate near-infrared electrochromism and electron transfer in different oligotriphenylamine systems
摘要:
Four oligomeric triarylamine compounds (diamine la, triamine lb, tetramine lc and pentamine 1d) were prepared and characterized by 1H NMR, mass spectrometry and elemental analysis. The combined results of cyclic voltammetry, square-wave voltammetry and UV vis NIR spectroelectrochemistry, as well as density functional theory, reveal that compounds la ld display two to five steps of oxidation processes, respectively, and the AE1/2 and Kc values were still remarkable for the relatively long pentamine, though they all decreased with an increase of the triphenylamine unit. These four compounds all exhibit fascinating redox-tuned multiple NIR absorption characteristics, and a completely reversible multicolor electrochromism for each of them could be synchronously realized. The associated mono cationic [1a]-[1d](+) could be classified as moderately-coupled Robin Day class H mixed-valence systems, which could be stabilized by spin delocalization over at least two adjacent amine units. (C) 2017 Elsevier Ltd. All rights reserved.
Spectral and redox properties of zinc porphyrin core dendrimers with triarylamines as dendron
作者:Chih-Yen Huang、Yuhlong Oliver Su
DOI:10.1039/c0dt00199f
日期:——
The first and second generation of zincporphyrincoredendrimers (3 and 4) with triarylamine as dendron have been synthesized via Ullmann coupling reaction. Their absorption and emission spectra indicate that there are strong interactions between zincporphyrincore and triarylamine dendrons. Zincporphyrinlinks with triarylamine causes Soret band broadening and Q band shift as compared with ZnTPP
ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC THIN FILM, AND TRIAMINE COMPOUNDS
申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP0805143A1
公开(公告)日:1997-11-05
The present invention provides a triamine compound represented by general formula (I):
an organic luminescence device which comprises an organic layer and a pair of electrodes disposed on both sides of the organic layer wherein the organic layer at least contains a layer of a light emitting zone and a layer of a hole transporting zone which comprises a hole injecting layer containing the triamine compound and a hole transporting layer, and an organic thin film comprising two layers which are a layer containing a compound represented by general formula (I) and having a thickness of 5 nm to 5 µm and a layer containing a compound represented by general formula (II):
and having a thickness of 5 nm to 5 µm. According to the present invention, an organic electroluminescence device which has little possibility of dielectric breakdown after storage for a long time and shows a remarkably high efficiency of light emission, an organic electroluminescence device which shows a remarkable stability of light emission after continuous use for a long time and has a long life, and an organic thin film which shows excellent hole injecting and transporting properties can be provided.