Selective Functionalization of Graphene at Defect-Activated Sites by Arylazocarboxylic <i>tert</i>
-Butyl Esters
作者:Christian E. Halbig、Roman Lasch、Jasmin Krüll、Anna S. Pirzer、Zhenping Wang、Jan N. Kirchhof、Kirill I. Bolotin、Markus R. Heinrich、Siegfried Eigler
DOI:10.1002/anie.201811192
日期:2019.3.11
The development of versatile functionalization concepts for graphene is currently in the focus of research. Upon oxo‐functionalization of graphite, the full surface of graphene becomes accessible for C−C bond formation to introduce out‐of‐plane functionality. Herein, we present the arylation of graphene with arylazocarboxylic tert‐butyl esters, which generates aryl radicals after activation with an
石墨烯通用功能化概念的发展目前是研究的重点。在对石墨进行羰基官能化后,可以通过石墨烯的整个表面进行C-C键形成,从而引入平面外官能团。在这里,我们介绍了石墨烯与芳基偶氮羧酸叔丁基的芳基化作用-丁酸酯,在被酸激活后会生成芳基。出人意料的是,官能化程度与石墨烯材料中晶格空位缺陷的浓度有关。因此,没有晶格缺陷的石墨烯材料不具有反应性。该反应可应用于分散在溶剂中的石墨烯,并在石墨烯沉积在表面上时导致双位官能化以及单位官能化。由于芳基偶氮羧酸叔丁酯部分可以连接到各种分子上,因此本文提出的方法为功能性石墨烯衍生物铺平了道路,缺陷的密度决定了功能化的程度。