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Microstructure evolution of diazonium functionalized graphene: A potential approach to change graphene electronic structure
Zhu HR(朱华瑞); Huang P(黄平); Jing L(荆隆); Zhu, HR; Huang, P; Jing, L; Zuo, TS; Zhao, YL; Gao, XY; Zuo TS(左太森); Zhao YL(赵宇亮); Gao XY(高学云)
2012
发表期刊JOURNAL OF MATERIALS CHEMISTRY
卷号22期号:5页码:2063-2068
摘要Graphene sheets were successfully functionalized with 4-nitrophenyl diazonium (NPD). Two dimensional Raman analysis demonstrated that the reaction preferred to happen on single-layer graphene rather than bi-layer or multi-layer, and the edges of graphene were more reactive than the central areas. Atomic force microscopy (AFM) indicated the aryl groups were covalently bonded to one side of the graphene basal plane in a perpendicular configuration. Transmission electron microscopy (TEM) and selected area electron diffraction (SAED) manifested that the modified graphene maintained the hexagonal symmetry but its microstructure changed. The main change was that the crystal lattice expanded compared with that of pristine graphene. Meanwhile, for the first time, a crystal lattice constant d approximate to 5.30 angstrom of functionalized graphene was obtained, which was approximately twice that of the pristine graphene's crystal lattice constant. This implied that the modified graphene had a super-lattice microstructure. Furthermore, the fast Fourier transform (FFT) of the modified graphene verified the formation of the super-lattice structures, and density functional theory (DFT) calculations showed the stability of the super-lattice structures. These modifications-elongation of crystal lattice constant and formation of super-lattice structures-may induce different electronic structures in graphene.
学科领域Chemistry; Materials Science
DOI10.1039/c1jm14862a
收录类别SCI
WOS记录号WOS:000298970700048
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被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224186
专题多学科研究中心
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Zhu HR,Huang P,Jing L,et al. Microstructure evolution of diazonium functionalized graphene: A potential approach to change graphene electronic structure[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(5):2063-2068.
APA 朱华瑞.,黄平.,荆隆.,Zhu, HR.,Huang, P.,...&高学云.(2012).Microstructure evolution of diazonium functionalized graphene: A potential approach to change graphene electronic structure.JOURNAL OF MATERIALS CHEMISTRY,22(5),2063-2068.
MLA 朱华瑞,et al."Microstructure evolution of diazonium functionalized graphene: A potential approach to change graphene electronic structure".JOURNAL OF MATERIALS CHEMISTRY 22.5(2012):2063-2068.
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