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Increased chemical reactivity achieved by asymmetrical 'Janus' functionalisation of graphene

机译:通过石墨烯的不对称“ Janus”官能化实现更高的化学反应性

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摘要

Chemical functionalisation is a promising method to tune the electronic structure of graphene, and the two-dimensional structure of graphene enables access to both of its faces for various types of functionalisation. Here, we present the effect of covalent functionalisation on the Raman spectrum in terms of monofacial (one-sided) and bifacial (two-sided) functionalisation using both monolayer and bilayer graphene. Asymmetrical or 'Janus' functionalisation is found to provide significantly increased levels of doping compared to other schemes allowing for control over graphene's electronic structure as well as control over surface functionality.
机译:化学官能化是调节石墨烯电子结构的一种有前途的方法,而石墨烯的二维结构可以访问其两个面以进行各种类型的官能化。在这里,我们就使用单层和双层石墨烯的单面(单面)和双面(双面)功能化而言,介绍了共价官能化对拉曼光谱的影响。与其他方案相比,发现不对称或“ Janus”功能化可以显着提高掺杂水平,从而可以控制石墨烯的电子结构以及表面功能。

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