The Synthesis of 1-Ethyl-1'-(4-vinylbenzyl)-4,4'-bipyridinium Chloride and Iodide and its Electrochromic Property  

The Synthesis of l-Ethyl-1'-(4-vinylbenzyl)-4, 4'-bipyridinium Chloride and Iodide and its Electrochromic Property

作　　者：Qing Long JIANG Xiang Kai FU Zhu Jun CHEN 

机构地区：[1]Research Institute of Applied Chemistry, College of Chemistry and Chemical Engineering, Southwest University, Chobgqing 400715 [2]Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing 400715 [3]Key Laboratory of Eco-environments in Three Gorges Reservoir Region （Ministry of Education）, Chongqing 400715

出　　处：《Chinese Chemical Letters》2006年第11期1447-1450,共4页中国化学快报（英文版）

基　　金：This work was financially supported by the Chongqing Natural Science Foundation of China （CSTC, 2005BB4109）.

摘　　要：Abstract： A new compound 1-ethyl-1＇-（4-vinylbenzyl）-4, 4＇-bipyridinium chloride and iodide has been synthesized. The cyclic voltammogram and impedance spectra indicated that a layer of viologen＇s electrochromic （EC） film could be deposited on conductive ITO glass working electrode With polyelectrolyte as ionic conduction layer, solid EC devices based on this compound have been assembled and their thickness was about 2.35 mm. When different voltages were added, they showed blue or violet red color. After optimization, its response time was less than 50 ms, the number of redox circulation was over 107 and the color of coloration states could be kept for 3 days. This kind of EC device can meet the demand of electronic ink.Abstract： A new compound 1-ethyl-1＇-（4-vinylbenzyl）-4, 4＇-bipyridinium chloride and iodide has been synthesized. The cyclic voltammogram and impedance spectra indicated that a layer of viologen＇s electrochromic （EC） film could be deposited on conductive ITO glass working electrode With polyelectrolyte as ionic conduction layer, solid EC devices based on this compound have been assembled and their thickness was about 2.35 mm. When different voltages were added, they showed blue or violet red color. After optimization, its response time was less than 50 ms, the number of redox circulation was over 107 and the color of coloration states could be kept for 3 days. This kind of EC device can meet the demand of electronic ink.

关 键 词：VIOLOGEN solid electrochromic device cycle life response time electronic ink. 

分 类 号：O657.1[理学—分析化学]