Coating of gold substrates with polyaniline through electrografting of aryl diazonium salts

被引：20
作者：
Vacca, A. [1 ]
Mascia, M. [1 ]
Rizzardini, S. [1 ]
Palmas, S. [1 ]
Mais, L. [1 ]
机构：
[1] Univ Cagliari, Dipartimento Ingn Meccan Chim & Mat, I-09123 Cagliari, Italy
来源：
ELECTROCHIMICA ACTA | 2014年 / 126卷
关键词：
Polyaniline; Aminophenyl modified electrode; Electrochemical impedance spectroscopy; Nitrobenzendiazonium; ATOMIC-FORCE MICROSCOPY; ELECTROCHEMICAL REDUCTION; CARBON SURFACES; COVALENT MODIFICATION; IMPEDANCE CHARACTERIZATION; CONDUCTING POLYMERS; ORGANIC-MOLECULES; ELECTRODES; FILMS; IMMOBILIZATION;
D O I：
10.1016/j.electacta.2013.08.187
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The results of an experimental study on electrochemical preparation of polyaniline (PANI)/polycrystalline gold composites are reported in this work. A three steps approach is adopted in order to obtain a stable and uniform coating: (I) functionalization of the gold surface by 4-nitrophenyl group, (2) electrochemical reduction of the nitro group to amine, and (3) electropolymerization of aniline onto the surface of the aminophenyl-modified gold electrode. Cyclic voltammetries and electrochemical impedance spectroscopies are used to characterize the gold surface after each step. Also the results of a sample prepared by electropolymerization of PANI on bare gold are presented as a comparison. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：81 / 89
页数：9
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