Geometric and electronic properties of graphene modified by “external” N-containing groups

Literature Information

Publication Date 2014-08-14
DOI 10.1039/C4CP03069A
Impact Factor 3.676
Authors

Xinde Wang, Qiuxia Cai, Guilin Zhuang, Xing Zhong, Donghai Mei, Xiaonian Li, Jianguo Wang


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Abstract

Using first-principles spin polarized density functional theory (DFT) calculations, we investigated structures and electronic properties of “external” nitrogen-containing group (pyridine derivatives) modified graphene via a single or a double bonding mode. Our results show that in the most stable structures, the bonding between pyridine derivatives and graphene involves the ortho-carbon of pyridine derivatives, as confirmed by the Bader charge analysis. The enhanced stability of pyridine derivatives on graphene by [2+2] cycloaddition, e.g., a double bonding mode (DBPyNG), is caused by the matches between frontier orbitals of pyridine derivatives and those of graphene, which leads to the formation of stronger chemical bonds. Interestingly, electronic structure density of states (DOS) analysis of SBPyNG reveals that the spin-up and spin-down parts are clearly split while it is not the case for the double bonding pyridine derivative modified graphene (DBPyNG).

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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