Electroreduction of Viologen Phenyl Diazonium Salts as a Strategy To Control Viologen Coverage on Electrodes

doi:10.1021/acs.langmuir.6b04317

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 机器人与3D打印技术创新中心

	Electroreduction of Viologen Phenyl Diazonium Salts as a Strategy To Control Viologen Coverage on Electrodes
	Cao, Liangcheng1 ; Fang, Gan1 ; Wang, Yuechuan 2
刊名	LANGMUIR
	2017-01-31
卷号	33 期号:4 页码:980-987
ISSN号	0743-7463
DOI	10.1021/acs.langmuir.6b04317
通讯作者	Cao, LC (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Fangzheng Ave 266, Chongqing 400714, Peoples R China.
英文摘要	A majority of the reported electrografting of aryldiazonium salts result in the formation of covalently attached films with a limited surface coverage of below 5 nmol.cm(-2). Herein, we report the preparation of higher-thickness redox-active viologen-grafted electrodes from the electro-reduction of viologen phenyl diazonium salts, by either cyclic voltammetric (CV) sweeps or electrolysis using a fixed potential. Both of the methodologies were successfully applied for various conductive surfaces, including glassy carbon (GC), gold disc, indium tin oxide glass, mesoporous TiO2 electrodes, and 3D compacted carbon fibers. A robust maximal viologen coverage, Gamma(viologen) = 9.5 nmol.cm(-2), was achieved on a GC electrode by CV electroreduction. Electroreduction held at a fixed potential at E-appl.. = -0.3 V can fabricate viologen-grafted electrodes with Gamma(viologen) in the range of 0-37 nmol.cm(-2) in a controllable way, by simply adjusting the electrodeposition time t(appl.). Time-dependent Gamma(viologen) were found to be 10 nmol.cm(-2)@2 min, 20 nmol.cm(-2)@4.2 min, and 30 nmol.cm(-2)@7 min. Furthermore, a TiO2 electrode coupled with Gamma(viologen) of 140 nmol.cm(-2) exhibited electrochromic performance, with the color changing from pale yellow to blue and red brown.
资助项目	Natural Science Foundation of China (NSFC)[61505208]
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000393269700017
内容类型	期刊论文
源URL	[http://172.16.51.4:88/handle/2HOD01W0/265]
专题	机器人与3D打印技术创新中心
通讯作者	Cao, Liangcheng
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Fangzheng Ave 266, Chongqing 400714, Peoples R China 2.Sichuan Univ, State Key Lab Polymer Mat, Coll Polymer Sci & Engn, South Sect 1st Ring Rd 24, Chengdu 610065, Peoples R China
推荐引用方式 GB/T 7714	Cao, Liangcheng,Fang, Gan,Wang, Yuechuan. Electroreduction of Viologen Phenyl Diazonium Salts as a Strategy To Control Viologen Coverage on Electrodes[J]. LANGMUIR,2017,33(4):980-987.
APA	Cao, Liangcheng,Fang, Gan,&Wang, Yuechuan.(2017).Electroreduction of Viologen Phenyl Diazonium Salts as a Strategy To Control Viologen Coverage on Electrodes.LANGMUIR,33(4),980-987.
MLA	Cao, Liangcheng,et al."Electroreduction of Viologen Phenyl Diazonium Salts as a Strategy To Control Viologen Coverage on Electrodes".LANGMUIR 33.4(2017):980-987.