Controlled diazonium electrografting driven by overpotential reduction: a general strategy to prepare ultrathin layers†,Chemical Communications

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Controlled diazonium electrografting driven by overpotential reduction: a general strategy to prepare ultrathin layers†
Chemical Communications ( IF 4.3 ) Pub Date : 2018-12-06 00:00:00 , DOI: 10.1039/c8cc08331b
Laure Pichereau _{1,

2,

3,

4,

5} , Isidoro López _{1,

2,

3,

4,

5} , Marius Cesbron _{1,

2,

3,

4,

5} , Sylvie Dabos-Seignon _{1,

2,

3,

4,

5} , Christelle Gautier _{1,

2,

3,

4,

5} , Tony Breton _{1,

2,

3,

4,

5}

Affiliation

A global and extremely simple strategy to prepare a covalently attached monolayered organic film on a carbon surface is presented. The approach is centered on the strict control of the radical polymerization traditionally observed when aryldiazonium salts are reduced. By exploiting the reductive properties of superoxide ions generated from atmospheric dioxygen at the grafting potential, the diazonium concentration is drastically lowered at the substrate/solution interface, resulting in the formation of ultrathin films. As the presented approach does not require any specific synthesis or any redox mediator addition, and is only diffusion controlled by the dissolved dioxygen, it is suitable for the preparation of a large range of functional surfaces on the nanometric scale.

中文翻译：

通过过电势还原驱动可控重氮电接枝：制备超薄层的一般策略†

提出了一种在碳表面上制备共价连接的单层有机膜的全局且极其简单的策略。该方法集中于严格控制传统上在还原芳基重氮盐时观察到的自由基聚合。通过利用大气中双氧在接枝电势下产生的超氧离子的还原特性，在底物/溶液界面处重氮的浓度急剧降低，从而形成了超薄膜。由于提出的方法不需要任何特定的合成或氧化还原介体的添加，并且仅受溶解的双氧的扩散控制，因此它适合于制备纳米级的大范围功能表面。

更新日期：2018-12-06

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