期刊
ELECTROCHIMICA ACTA
卷 156, 期 -, 页码 267-273出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.01.049
关键词
Graphene; electronic communication; ferrocene; intervalence charge transfer; voltammetry
资金
- National Natural Science Foundation of China [21275136]
- Natural Science Foundation of Jilin province, China [201215090]
Graphene oxide (GO) nanosheets functionalized with ferrocenyl moieties (GO-Fc) were fabricated through strong covalent C-C bonds. The resulting hybrid showed efficient electronic communication between ferrocene centers due to the strong electron delocalization facilitated by the large pi-pi conjugated structure of graphene sheets. The obtained hybrid exhibited two pairs of voltammetric peaks with a large potential spacing of 0.515V and a broad absorption peak in the near-infrared range (similar to 1428 nm) at mixed valence. The electrochemical and near IR spectroscopic features suggested a Class II/III behavior of the intervalence charge transfer. This work indicates clearly that strong electronic coupling between ferrocene centers can be easily realized across graphene nanosheets with sp(2)-hybridized carbon. (C) 2015 Elsevier Ltd. All rights reserved.
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