Kovaříček Petr, Bastl Zdeněk, Valeš Václav, Kalbac Martin
Department of Low-Dimensional Systems, J. Heyrovsky Institute of Physical Chemistry of the ASCR, v.v.i., Dolejškova 2155/3, 182 23, Prague, Czech Republic.
Chemistry. 2016 Apr 4;22(15):5404-8. doi: 10.1002/chem.201504689. Epub 2016 Mar 1.
Graphene is a material of unmatched properties and eminent potential in disciplines ranging from physics, to chemistry, to biology. Its advancement to applications with a specific function requires rational design and fine tuning of its properties, and covalent introduction of various substituents answers this requirement. We challenged the obstacle of non-trivial and harsh procedures for covalent functionalization of pristine graphene and developed a protocol for mild nucleophilic introduction of organic groups in the gas phase. The painstaking analysis problem of monolayered materials was addressed by using surface-enhanced Raman spectroscopy, which allowed us to monitor and characterize in detail the surface composition. These deliverables provide a toolbox for reactivity of fluorinated graphene under mild reaction conditions, providing structural freedom of the species to-be-grafted to the single-layer graphene.
石墨烯是一种在从物理到化学再到生物学等众多学科中具有无与伦比的特性和巨大潜力的材料。要将其发展为具有特定功能的应用，需要对其性能进行合理设计和精细调整，而共价引入各种取代基就能满足这一要求。我们克服了原始石墨烯共价功能化过程中复杂且苛刻的程序这一障碍，并开发了一种在气相中温和亲核引入有机基团的方法。通过使用表面增强拉曼光谱解决了单层材料的精细分析问题，这使我们能够详细监测和表征表面组成。这些成果为氟化石墨烯在温和反应条件下的反应性提供了一个工具箱，为接枝到单层石墨烯上的物种提供了结构自由度。
