DETERMINATION OF THE KINETIC-PARAMETERS FOR THE ELECTROREDUCTION OF C-60 BY SCANNING ELECTROCHEMICAL MICROSCOPY AND FAST SCAN CYCLIC VOLTAMMETRY

被引：81

作者：

MIRKIN, MV ^{[1
]}

BULHOES, LOS ^{[1
]}

BARD, AJ ^{[1
]}

机构：

[1] UNIV TEXAS, DEPT CHEM & BIOCHEM, AUSTIN, TX 78712 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1993年 / 115卷 / 01期

关键词：

D O I：

10.1021/ja00054a028

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electroreduction of the fullerene C60 in 1,2-dichlorobenzene (ODCB) and benzonitrile (PhCN) at a Pt electrode was studied by using scanning electrochemical microscopy and (ast scan cyclic voltammetry. The former technique was employed for steady-state measurements in a thin-layer cell formed by an ultramicroelectrode tip and mercury pool substrate. The standard heterogeneous rate constants found in both solvents, 0.46 cm/s (ODCB) and 0.12 cm/s (PhCN), appeared to be lower than one would expect for an uncomplicated outer sphere electron-transfer reaction, probably because solvation and ion pairing affect the reaction kinetics. The diffusion coefficient of C60 in ODCB depends strongly on supporting electrolyte (TBABF4) concentration.

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页码：201 / 204

页数：4

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