Computational evidence for the possible existence of the open heterofullerenes C56X2Y (X = N,P; Y = O,S) and C60-6kN4k

被引:10
|
作者
Xu, Xiang
Kang, Hong Seok
机构
[1] Jeonju Univ, Coll Engn, Dept Nano & Adv Mat, Chonju 560759, Chonbuk, South Korea
[2] Tongji Univ, Pohl Inst Solid State Phys, Shanghai 200092, Peoples R China
关键词
D O I
10.1016/j.cplett.2007.05.028
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Based on calculations using density functional theory, we proposed a series of open heterofullerenes: C56N2O, C56N2S, C56P2O, and C56P2S, which constitute the first examples of open heterofullerenes not externally functionalized. They exhibit large HOMO-LUMO gaps which are comparable to that for C-60. The Fermi level of the system becomes higher as the heterofullerene changes from C56N2O to C56P2S. In the solid-state, face centered cubic structures are more stable than body centered cubic for all of them. In addition, we have also investigated other heterofullerenes with empty sites (=C54N4 and C48N8). (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:300 / 304
页数:5
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