4,7-Bis(dimethylamino)benzimidazoles and twin-type derivatives: reversible two-stage redox system modulated by proton-transfer期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

4,7-Bis(dimethylamino)benzimidazoles and twin-type derivatives: reversible two-stage redox system modulated by proton-transfer

Authors:	Takanori Suzuki Yoshiaki TsubataYoshiaki Obana Takanori FukushimaTsutomu Miyashi Mayu SaitoHidetoshi Kawai Kenshu FujiwaraKimio Akiyama

Institution:	^a Division of Chemistry, Graduate School of Science, Hokkaido Universiy, Sapporo 060-0810, Japan ^b Department of Chemistry, Graduate School of Science, Tohoku Universiy, Sendai 980-8578, Japan ^c Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan

Abstract:	The title electron donors 1 as well as their conjugate bases 2⁻ undergo reversible two-stage one-electron oxidation. ESR analysis indicated the important contribution of zwitterionic structure for radicals 2. Bis(zwitterionic) but not quinoid structure was suggested for p-4, generated from the twin-type dianionic donor p-4²⁻ with a p-phenylene spacer.

Keywords:	electron donor proton transfer phenylenediamine radical zwitterion redox system electrochromism response system
本文献已被 ScienceDirect 等数据库收录！