Synthesis and electronic properties of chemically functionalized graphene on metal surfaces

Synthesis and electronic properties of chemically functionalized graphene on metal surfaces
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金属表面化学功能化石墨烯的合成及电子性能

DOI:
10.1088/0953-8984/25/4/043001
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发表时间:
2013
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
通讯作者:
Grüneis
Grüneis
中科院分区:
--
文献类型:
--
作者:
Grüneis

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本文综述了石墨烯在金属表面的电子性质、生长和功能化方面的研究进展。从使用π和σ电子的最近邻紧束缚(TB)近似推导孤立石墨烯层的电子性质开始,然后将TB模型扩展到第三最近邻和层间耦合。后者与少层石墨烯和石墨有关。接下来,回顾通过化学气相沉积可以获得外延石墨烯的条件,特别强调Ni(111)表面。关于功能化,我首先讨论单层Au嵌入石墨烯/Ni(111)界面,这使得石墨烯准独立。然后,Au插层的准自立式石墨烯是化学功能化的基础。石墨烯的功能化分为共价功能化、离子功能化和取代功能化。作为这三种可能性的典型例子,我讨论了氢的共价官能化,碱金属的离子官能化和氮杂原子的取代官能化。
A review on the electronic properties, growth and functionalization of graphene on metals is presented. Starting from the derivation of the electronic properties of an isolated graphene layer using the nearest neighbor tight-binding (TB) approximation for π and σ electrons, the TB model is then extended to third-nearest neighbors and interlayer coupling. The latter is relevant to few-layer graphene and graphite. Next, the conditions under which epitaxial graphene can be obtained by chemical vapor deposition are reviewed with a particular emphasis on the Ni (111) surface. Regarding functionalization, I first discuss the intercalation of monolayer Au into the graphene/Ni (111) interface, which renders graphene quasi-free-standing. The Au intercalated quasi-free-standing graphene is then the basis for chemical functionalization. Functionalization of graphene is classified into covalent, ionic and substitutional functionalization. As archetypical examples for these three possibilities I discuss covalent functionalization by hydrogen, ionic functionalization by alkali metals and substitutional functionalization by nitrogen heteroatoms.
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影响因子: 56.9
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