Localized Reduction of Graphene Oxide by Electrogenerated Naphthalene Radical Anions and Subsequent Diazonium Electrografting

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• 作者：Jo毛l Azevedo ; Laure Fillaud ; C茅line Bourdillon ; Jean-Marc No毛l ; Fr茅deric Kanoufi ; Bruno Jousselme ; Vincent Derycke ; St茅phane Campidelli ; Renaud Cornut
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：April 2, 2014
• 年：2014
• 卷：136
• 期：13
• 页码：4833-4836
• 全文大小：234K
• 年卷期：v.136,no.13(April 2, 2014)
• ISSN：1520-5126

文摘

Herein, we describe a new localized functionalization method of graphene oxide (GO) deposited on a silicon oxide surface. The functionalization starts with the reduction of GO by electrogenerated naphthalene radical anions. The source of reducers is a microelectrode moving close to the substrate in a typical scanning electrochemical microscopy (SECM) configuration. Then, the recovery of electronic conductivity upon reduction enables the selective electrochemical functionalization of the patterns. The illustrative example is the electrografting of reduced-GO with a diazonium salt bearing a protonated amino group that can further immobilize gold nanoparticles by simple immersion. This study opens new routes for the construction of multifunctional patterned surfaces.