Nanoimpacts Reveal the Electron‐Transfer Kinetics of the Ferrocene/Ferrocenium Couple Immobilised on Graphene Nanoplatelets | Zendy

Wu Haoyu | Zendy; Lin Qianqi | Zendy; BatchelorMcAuley Christopher | Zendy; Compton Richard G. | Zendy

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Nanoimpacts Reveal the Electron‐Transfer Kinetics of the Ferrocene/Ferrocenium Couple Immobilised on Graphene Nanoplatelets

Author(s) -

Wu Haoyu,

Lin Qianqi,

BatchelorMcAuley Christopher,

Compton Richard G.

Publication year - 2016

Publication title -

chemelectrochem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 59

ISSN - 2196-0216

DOI - 10.1002/celc.201600296

Subject(s) - ferrocene , kinetics , graphene , electron transfer , microelectrode , electrochemistry , chemistry , redox , aqueous solution , electrode , chemical engineering , materials science , polymer chemistry , photochemistry , nanotechnology , inorganic chemistry , physics , quantum mechanics , engineering

The kinetics of the ferrocene/ferrocenium (Cp 2 Fe/Cp 2 Fe + ) redox couple immobilised on graphene nanoplatelets (GNPs) in aqueous solution are evaluated by using the nanoimpacts method. Single GNPs modified with poly(vinylferrocene) are allowed to impact a microelectrode. For the duration (ca. 10–100 ms) of the impacts, the GNP adopts the potential of the electrode and acts as a “chemically modified nanoelectrode”. The study of individual impacts facilitates the resolution of fast electron‐transfer kinetics that, for the Cp 2 Fe/Cp 2 Fe + couple, is shown to be at least 3±1 s −1 .

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