Isomeric and structural impacts on electron acceptability of carbon   cages in atom-bridged fullerene dimers

doi:10.1021/jp0771217

CORC > 北京大学 > 化学与分子工程学院

	Isomeric and structural impacts on electron acceptability of carbon cages in atom-bridged fullerene dimers
	Sun, Baoyun ; Ren, Tongxiang ; Miao, Xiaopei ; Dai, Fucai ; Jin, Long ; Yuan, Hui ; Xing, Gengmei ; Li, Meixian ; Dong, Jinquan ; Chang, Fei ; Hu, Jingbo ; Chen, Hao ; Zhao, Feng ; Gao, Xueyun ; Zhao, Yuliang
刊名	journal of physical chemistry c
	2008
关键词	ELECTROCHEMICAL PROPERTIES C-121 C-60 STABILITIES DERIVATIVES C-141
DOI	10.1021/jp0771217
英文摘要	The electrochemical properties of the carbon-bridged fullerene dimers C-121(I), C-121(II), C-121(III), C-131, and C-141 were characterized systematically for the first time in this study. Cyclic voltammogram and differential pulse voltammogram analyses revealed that they first underwent three reversible fullerene-unit-based reduction processes where each of the two carbon cages accepted one electron in each step and then possessed a different deep reduction sequence from the fourth to sixth reduction potentials of the fullerene cages. The electronic interactions between cages in the atom-bridged dimers (e.g., C-60-C-C-60) were found to be different from those of dimers in which two cages were connected directly. Comparison studies of the redox properties of the five dimers revealed that the C-60 dimerization via [5.6]-[6.6] connection influenced the cage electron acceptability much more than that of [5.6]-[5.6] or [6.6]-[6.6] connections And the dimerization with C-70 cages influenced the reduction potentials of dimerized products more potently than that with C-60 cages. Further results from controlled potential electrolysis, high-performance liquid chromatography, matrix-assisted laser desorption and ionization time-of-flight mass spectrometry, ultraviolet absorption spectral analyses demonstrated the reduction processes and a dissociation of the dimers based on reductions. The theoretical understanding of the experiments was investigated by using time-dependent density functional calculations for the ionic states Of C-121(I, II, III)(n-) with n = 0, 1, 2, 3, or 4.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000252484000015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; SCI(E); EI; 4; ARTICLE; 3; 741-746; 112
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/249579]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Sun, Baoyun,Ren, Tongxiang,Miao, Xiaopei,et al. Isomeric and structural impacts on electron acceptability of carbon cages in atom-bridged fullerene dimers[J]. journal of physical chemistry c,2008.
APA	Sun, Baoyun.,Ren, Tongxiang.,Miao, Xiaopei.,Dai, Fucai.,Jin, Long.,...&Zhao, Yuliang.(2008).Isomeric and structural impacts on electron acceptability of carbon cages in atom-bridged fullerene dimers.journal of physical chemistry c.
MLA	Sun, Baoyun,et al."Isomeric and structural impacts on electron acceptability of carbon cages in atom-bridged fullerene dimers".journal of physical chemistry c (2008).