Effect of Alkyl Chain Length on the Structure of Viologen Adsorbed on a Cu(100) Electrode

doi:10.3866/PKU.WHXB20101219

QIBEBT-IR > 多相催化转化研究组

	Effect of Alkyl Chain Length on the Structure of Viologen Adsorbed on a Cu(100) Electrode
	Jiang Min 1; Zhang Hong-Yu 2; Zhao Xue-Bo 1
	2011
发表期刊	ACTA PHYSICO-CHIMICA SINICA
卷号	27 期号:1 页码:163-168
摘要	The redox behavior and the potential dependent adsorption structure of alkylated viologen on a Cu(100) electrode were investigated by cyclic voltammetry (CV) and in situ scanning tunneling microscopy (STM). Heptyl viologen (1,1'-diheptyl-4,4'-bipyridinium dichloride) (DHV) and ethyl viologen (1,1'-diethyl-4, 4'-bipyridinium dibromide) (DEV) showed different current waves during CV measurements in a KCl-containing electrolyte solution. The dicationic heptyl viologen molecules showed a highly ordered two dimension (2D)'dot-array' structure on the c(2 x 2)-Cl modified Cu(100) electrode surface in the STM images while the dicationic ethyl viologen molecules did not show any structures. With a decrease in the electrode potential, a one-electron reduction of the dication heptyl viologen resulted in the appearance of a stripe pattern that was formed by radical heptyl viologen as shown in the STM images. A more compact stripe pattern was visible in the radical ethyl viologen phase. The adsorption structure of heptyl viologen strongly depends on the electrode potential but the structure of the ethyl viologen adsorbed on the Cu(100) electrode was less response to the electrode potential.
文章类型	Article
关键词	Electrochemical Scanning Tunneling Microscopy Cyclic Voltammetry Viologen Length Of Alkyl Chain Potential-dependent
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.3866/PKU.WHXB20101219
关键词[WOS]	SCANNING-TUNNELING-MICROSCOPY ; HEPTYL VIOLOGEN ; HOPG ELECTRODE ; SURFACES ; ADSORPTION ; ADLAYERS ; TRANSITIONS ; DISPLAY
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000285781600025
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/6542
专题	多相催化转化研究组
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Shandong Prov, Peoples R China 2.Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Shandong Prov, Peoples R China
推荐引用方式 GB/T 7714	Jiang Min,Zhang Hong-Yu,Zhao Xue-Bo. Effect of Alkyl Chain Length on the Structure of Viologen Adsorbed on a Cu(100) Electrode[J]. ACTA PHYSICO-CHIMICA SINICA,2011,27(1):163-168.
APA	Jiang Min,Zhang Hong-Yu,&Zhao Xue-Bo.(2011).Effect of Alkyl Chain Length on the Structure of Viologen Adsorbed on a Cu(100) Electrode.ACTA PHYSICO-CHIMICA SINICA,27(1),163-168.
MLA	Jiang Min,et al."Effect of Alkyl Chain Length on the Structure of Viologen Adsorbed on a Cu(100) Electrode".ACTA PHYSICO-CHIMICA SINICA 27.1(2011):163-168.