Template synthesis of armchair-edge graphene nanoribbons inside carbon nanotubes
Template synthesis of armchair-edge graphene nanoribbons inside carbon nanotubes
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DOI：
10.7567/1882-0786/ab5895
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发表时间：
2020-01-01
影响因子：
2.3
通讯作者：
Shinohara, Hisanori
中科院分区：
文献类型：
--
作者：
Kinno, Yasuhiro;Omachi, Haruka;Shinohara, Hisanori
我们开发了一种在单壁碳纳米管（SWCNTs）内合成扶手椅边缘石墨烯纳米带的模板。与10，10 ' -二溴-9，9' -联蒽基的直接气相反应通过在SWCNT的空腔内的脱卤聚合和脱氢环化提供具有七个碳原子宽度的扶手椅型石墨烯纳米带（7-AGNR）。高分辨率透射电子显微镜的研究表明，7-AGNRs扭曲的纳米管内，它们的构象敏感地改变与单壁碳纳米管的直径。从吸收光谱测量估计封装在单壁碳纳米管中的7-AGNRs的光学带隙为2.1eV。
We developed a template synthesis for armchair-edge graphene nanoribbons inside single-wall carbon nanotubes (SWCNTs). A direct vapor-phase reaction with 10,10 ' -dibromo-9,9 ' -bianthryl furnished armchair graphene nanoribbons with a width of seven carbon atoms (7-AGNRs) through dehalogenative polymerization and dehydrogenation cyclization within the cavities of the SWCNTs. High-resolution transmission electron microscopy studies revealed that the 7-AGNRs were twisted inside the nanotubes, and that their conformations sensitively changed with the diameter of the SWCNTs. The optical band gap of 7-AGNRs encapsulated in SWCNTs was estimated to be 2.1 eV from absorption spectroscopy measurements.