Gold(III) Diazonium Complexes for Electrochemical Reductive Grafting

被引：21
作者：
Overton, Atiya T. [1 ]
Mohamed, Ahmed A. [1 ]
机构：
[1] Delaware State Univ, Dept Chem, Dover, DE 19901 USA
来源：
INORGANIC CHEMISTRY | 2012年 / 51卷 / 10期
关键词：
IN-SITU; SURFACE FUNCTIONALIZATION; COVALENT MODIFICATION; IRON SURFACES; ELECTRODE; CARBON; SALTS; LAYERS; METAL;
D O I：
10.1021/ic300307z
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Gold(III) diazonium complexes were synthesized for the first time and studied for electrochemical reductive grafting. The diazonium complex [CN-4-C6H4N N]AuCl4 was synthesized by protonating CN-4-C6H4NH2 with chloroauric acid H[AuCl4]center dot 3H(2)O to form the ammonium salt [CN-4-C6H4NH3]AuCl4, which was then oxidized by the one-electron oxidizing agent [NO]PF6 in CH3CN. The highly irreversible reduction potential of 0.1 mM [CN-4-C6H4N N]AuCl4 observed at -0.06 V versus Ag/AgCl in CH3CN/0.1 M [Bu4N]PF6 encompasses both gold(0) deposition and diazonium reduction. Repeated scans showed the absence of the reduction peak on the second run, which indicates that surface modification with a blocking gold aryl film has occurred and is largely complete.
引用
收藏
页码：5500 / 5502
页数：3
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