APPLICATION OF STILBENE-(4,4'-DIISOTHIOCYANATE)-2,2'-DISULFONIC ACID AS A BIFUNCTIONAL REAGENT FOR THE ORGANIZATION OF ORGANIC MATERIALS AND PROTEINS ONTO ELECTRODE SURFACES

被引：57

作者：

KATZ, E ^{[1
]}

RIKLIN, A ^{[1
]}

WILLNER, I ^{[1
]}

机构：

[1] HEBREW UNIV JERUSALEM, INST CHEM, IL-91904 JERUSALEM, ISRAEL

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1993年 / 354卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(93)80329-G

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Trans-stilbene-(4,4'-diisothiocyanate)-2,2'-disulfonic acid (DIDS) acts as a bifunctional reagent for the organization of redox functionalized monolayers. Treatment of gold electrodes by cystamine generates the respective thiol-monolayer-modified gold electrode with a surface density corresponding to 5.4 X 10(-11) mol cm-2. Treatment of the cystamine-modified gold electrode with DIDS generates an active monolayer that can be further coupled to redox functionalities such as the amino quinone. The resulting quinone-monolayer-modified electrode displays electrochemical activity. Similarly, the cystamine + DIDS-monolayer-modified electrode reacts with amino functionalities of redox proteins, i.e. glutathione reductase. The resulting enzyme monolayer-gold electrode assembly is wired towards electron-transfer communication by covalent attachment of N-methyl-N'-(6-hexanoic acid)-4,4'-bipyridinium iodide as the electron relay component.

引用

页码：129 / 144

页数：16

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