Grafting triphenylamine groups onto polysiloxanes to improve interaction between the electrochromic films and ITO
摘要:
A novel series of triphenylamine (TPA)-contained polysiloxanes (PTPASi) have been synthesized by a normal reaction of hydrosilylation through poly(methylhydrosiloxane)(PMHS) with four TPA-based alkenes (TPAA) for electrochromic applications. Grafting TPA onto polysiloxanes was employed as a strategy to ameliorate the thermal stability and cycle stability of the electrochromic properties due to the enhanced force of adhesion between the polymer films and the ITO substrate. The morphology and impedance of the polymers after electro-oxidizing reaction was studied and didn't reveal significant change suggesting good stability of the hybrid system. Meanwhile, with the introducing of the polysiloxane backbones, the four polymer films appeared nearly colorless in their natural state, in contrast to three primary colors of red, green and blue in their oxidized state. Hence, these PMHS films can be mixed to obtain all the other colors on the basis of the color mixing theory. In addition, the potential switching properties of the four polymers at the temperature of 150 degrees C have been investigated for the first time, which indicate high thermal stability and potential for relatively high temperature and/ or long term cycling applications. (C) 2017 Elsevier Ltd. All rights reserved.
Electrochromic polymers electrochemically polymerized from 2, 5–dithienylpyrrole (DTP) with different triarylamine units: Synthesis, characterization and optoelectrochemical properties
作者:Shuwei Cai、Hailin Wen、Shuzhong Wang、Haijun Niu、Cheng Wang、Xiankai Jiang、Xuduo Bai、Wen Wang
DOI:10.1016/j.electacta.2017.01.071
日期:2017.2
A series of polymers, consisting both 2, 5-dithienylpyrrole (DTP) and different triarylamine units were synthesized by electrochemical oxidative polymerization. The structures of the monomers, including N-(4-(2,5-di(thiophen-2- yl) −1H-pyrrol-1-yl)phenyl)-N-Phenyl Naphthalene-2-amine (DTP-PNA), 4-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)-N,N-diphenylaniline (DTP-DPA), 4-(tert-butyl)-N-(4-(tert-butyl)phenyl)-N-(4-(2
Novel amine compounds, their preparation processes and the organic electroluminescent devices using the same
申请人:Wen Shih-Wen
公开号:US20080038587A1
公开(公告)日:2008-02-14
The claimed invention relates to compounds of the formula (I):
wherein X, Y, Ar
1
, Ar
2
, Ar
3
and Ar
4
are as defined in the specification. The claimed invention also relates to the preparation processes of the said compounds and their uses in the organic electroluminescent device.