Fermi-Level Dependence of the Chemical Functionalization of Graphene with Benzoyl Peroxide
Fermi-Level Dependence of the Chemical Functionalization of Graphene with Benzoyl Peroxide
复制标题
过氧化苯甲酰石墨烯化学官能化的费米能级依赖性
DOI：
10.1021/acs.jpcc.7b01520
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发表时间：
2017-05-18
影响因子：
3.7
通讯作者：
Gao, Bo
中科院分区：
文献类型：
--
作者：
Liu, Dandan;He, Mengci;Gao, Bo
基于热引发的过氧化苯甲酰固相化学反应，研究了石墨烯的化学功能化对其费米能级的依赖性。在施加栅极电压以移动费米能级期间进行化学官能化。由于中性中间体和固相反应，石墨烯表面不会发生栅电压引起的反应物浓度变化。对功能化石墨烯的拉曼测量表明，较高的费米能级导致更多的反应碳原子，这是根据石墨烯和苯基之间的能级排列来解释的。
The dependence of the chemical functionalization of graphene on its Fermi level was investigated based on a heat-initiated solid-phase chemical reaction with benzoyl peroxide. The chemical functionalization was performed during application of a gate voltage to shift the Fermi level. A gate-voltage-induced variation of the reactant concentration on the graphene surface could not occur because of the neutral intermediate and the solid-phase reaction. Raman measurements on functionalized graphene showed that a higher Fermi level led to more reacted carbon atoms, which was interpreted in terms of the energy-level alignment between graphene and phenyl radical.