The tetracyanoethylene oxide (TCNEO) functionalization of chemical vapor deposition grown large area graphene and graphite was performed using reaction of TCNEO with carbon surface in chlorobenzene. The successful functionalization has been confirmed by Raman and Auger spectroscopy, and by numerical modeling of the structure and vibrational modes of TCNEO-functionalized graphene. Raman spectra of TCNEO-functionalized graphene and graphite show several groups of lines corresponding to vibrations of attached carbonyl ylide. One of key signatures of TCNEO attachment is the high intensity Raman band at ~1450 cm−1, which represents the C-C=C in plane vibrations in functionalization-distorted graphene. Raman spectra indicate the existence of central (pristine) attachment of TCNEO to graphene surface.
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机译:使用TCNEO与碳表面在氯苯中的反应,对化学气相沉积生长的大面积石墨烯和石墨进行了四氰基环氧乙烷(TCNEO)官能化。拉曼光谱和俄歇光谱以及TCNEO官能化石墨烯的结构和振动模式的数值模型已证实成功的官能化。 TCNEO官能化的石墨烯和石墨的拉曼光谱显示出几组线,对应于连接的羰基内酯的振动。 TCNEO附着的关键特征之一是〜1450 cm -1 sup>处的高强度拉曼带,它表示功能化扭曲的石墨烯在平面振动中的C-C = C。拉曼光谱表明TCNEO与石墨烯表面存在中心(原始)连接。
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