ELECTRON CONDUCTION IN ORGANIC SOLUTIONS

被引:34
作者
NORTON, JD [1 ]
ANDERSON, SA [1 ]
WHITE, HS [1 ]
机构
[1] UNIV MINNESOTA,DEPT CHEM ENGN & MAT SCI,MINNEAPOLIS,MN 55455
关键词
D O I
10.1021/j100180a002
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A voltammetric study of electron conduction in nitrobenzene (NB)/toluene solutions is presented. Analysis of steady-state mass-transport-limited currents corresponding to the first and second one-electron reductions of NB (to the radical anion, NB-, and dianion, NB2-, respectively) indicates that electrogeneration of NB2- is suppressed to negligible values in concentrated NB solutions as a result of the increased flux of electrons away from the electrode surface via the self-exchange electron-transfer mechanism, NB- + NB half-arrow-right-over-half-arrow-left k(et) NB + NB-. Comparison of experimental and computer-simulated fluxes yields k(et) approximately 8.4 x 10(8) M-1 s-1. Current densities of magnitude greater than 0.5 A/cm2 can be attributed to the self-exchange electron-transfer reaction.
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页码:3 / 6
页数:4
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