Electrochemical growth and characterization of polyoxometalate-containing monolayers and multilayers on alkanethiol monolayers self-assembled on gold electrodes

	Electrochemical growth and characterization of polyoxometalate-containing monolayers and multilayers on alkanethiol monolayers self-assembled on gold electrodes
	Cheng L ; Niu L ; Gong J ; Dong SJ
刊名	chemistry of materials
	1999
卷号	11 期号:6 页码:1465-1475
关键词	QUARTZ-CRYSTAL MICROBALANCE FILM MODIFIED MICROELECTRODES 1/12 PHOSPHOMOLYBDIC ANIONS HYDROGEN EVOLUTION REACTION CLAY-MODIFIED ELECTRODES ELECTROCATALYTIC REDUCTION POLYMERIC MATRICES SURFACE FUNCTIONALIZATION CONDUCTING POLYMERS AMPEROMETRIC DETECTION
ISSN号	0897-4756
通讯作者	dong sj
中文摘要	a general strategy has been developed for fabrication of ultrathin monolayer and multilayer composite films composed of nearly all kinds of polyoxometalates (poms), including isopolyanions (ipas), and heteropolyanions (hpas). it involves stepwise adsorption between the anionic poms and a cationic polymer on alkanethiol (cysteamine and 3-mercaptopropionic acid) self-assembled monolayers (sams) based on electrostatic interaction. here a keggin-type hpa simo11vo405- was chosen as a main representative to elucidate, in detail, the fabrication and characterization of the as-prepared composite films. a novel electrochemical growth method we developed for film formation involves cyclic potential sweeps over a suitable potential range in modifier solutions. it was comparatively studied with a commonly used method of immersion growth, i.e., alternately dipping a substrate into modifier solutions. growth processes and structural characteristics of the composite films are characterized in detail by cyclic voltammetry, uv-vis spectroscopy (uv-vis), x-ray photoelectron spectroscopy (xps), micro-fourier transform infrared reflection-absorption spectroscopy (ftir-ra), and electrochemical quartz crystal microbalance (eqcm). the electrochemical growth is proven to be more advantageous than the immersion growth. the composite films exhibit well-defined surface waves characteristic of the hpas' redox reactions. in addition, the composite films by the electrochemical growth show a uniform structure and an excellent stability. ion motions accompanying the redox processes of simo11vo405- in multilayer films are examined by in situ time-resolved eqcm and some results are first reported. the strategy used here has been successfully popularized to ipas as well as other hpas no matter what structure and composition they have.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000080886100011
公开日期	2010-11-04
内容类型	期刊论文
源URL	[http://202.98.16.49/handle/322003/21815]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Cheng L,Niu L,Gong J,et al. Electrochemical growth and characterization of polyoxometalate-containing monolayers and multilayers on alkanethiol monolayers self-assembled on gold electrodes[J]. chemistry of materials,1999,11(6):1465-1475.
APA	Cheng L,Niu L,Gong J,&Dong SJ.(1999).Electrochemical growth and characterization of polyoxometalate-containing monolayers and multilayers on alkanethiol monolayers self-assembled on gold electrodes.chemistry of materials,11(6),1465-1475.
MLA	Cheng L,et al."Electrochemical growth and characterization of polyoxometalate-containing monolayers and multilayers on alkanethiol monolayers self-assembled on gold electrodes".chemistry of materials 11.6(1999):1465-1475.