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  • 文献标题:   Direct electron transfer of cytochrome c at mono-dispersed and negatively charged perylene-graphene matrix
  • 文献类型:   Article
  • 作　　者:   ZHANG N, LV XY, MA WG, HU YW, LI FH, HAN DX, NIU L
  • 作者关键词:   cytochrome c, direct electron transfer, 3 4 9 10perylene tetracarboxylic acid, graphene
  • 出版物名称:   TALANTA
  • ISSN:   0039-9140 EI 1873-3573
  • 通讯作者地址:   Chinese Acad Sci
  • 被引频次:   22
  • DOI:   10.1016/j.talanta.2012.12.028
  • 出版年:   2013

▎ 摘　　要

Mono-dispersed 3,4,9,10-perylene tetracarboxylic acid (PICA) functionalized graphene sheets (PTCA-graphene) were fabricated by a chemical route and dispersed well in aqueous solution. PTCA-graphene with plenty of -COOH groups as electrostatic absorbing sites were beneficial to the loading of Cytochrome c (Cyt c). Cyt c, which was tightly immobilized on the PTCA-graphene modified glassy carbon electrode, maintained its natural conformation. Direct electron transfer of Cyt c and the electro-catalytic activity towards the reduction of H2O2 were also achieved. It has been substantiated that PTCA-graphene is a preferable biocompatible matrix for Cyt c. (C) 2012 Elsevier B.V. All rights reserved.