Electrochemistry in tetrahydrofuran and at low temperature: protocol, procedures and methods
Electrochemistry in tetrahydrofuran and at low temperature: protocol, procedures and methods
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四氢呋喃和低温下的电化学:方案、程序和方法
DOI:
10.1002/poc.1574
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发表时间:
2009
影响因子:
1.8
通讯作者:
Baron R
中科院分区:
文献类型:
--
作者:
Baron R
This review describes the protocol, procedures and methods for electrochemical studies in THF and at low temperature that have been developed in the course of the last 5 years in our laboratory. Electrochemical studies in THF benefit from a large accessible potential window. In practice, it is however necessary to avoid the presence of humidity in the electrochemical cell. A specific reference electrode had to be designed for those measurements. Microelectrodes, the voltammetric response of which is negligibly affected by the resistivity of the medium, were preferred to macroelectrodes. Moreover, a methodology has been developed for the quantitative analysis of both voltammetric and chronoamperometric curves obtained for the microelectrodes. The fitting of chronoamperometric measurements using the Shoup and Szabo's expression allows us to estimate the diffusion coefficient of the substrate. The modelling of the cyclic voltammograms measured over a large range of scan rates allows the confirmation of the diffusion coefficient of the substrateDA, the determination of the diffusion coefficient of the electrogenerated moleculeDB, of the formal potentialE, of the transfer coefficientαand of the standard heterogeneous rate constant for the electron transferk0. Typically, systems are investigated at temperatures ranging from room temperature to 192 K. Parameters obtained at various temperatures are used to extract, through Arrhenius plots, the activation energies both for the diffusion coefficientEA(D) and for the electron transfer reactionEA(k0). Copyright © 2009 John Wiley & Sons, Ltd.
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DOI:
--
发表时间:
2006
期刊:
影响因子:
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作者:
N. Fietkau;Christopher A. Paddon;Farrah L. Bhatti;T. Donohoe;R. Compton
通讯作者:
R. Compton
DOI:
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1972
期刊:
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DOI:
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2004
期刊:
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通讯作者:
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DOI:
--
发表时间:
2006
期刊:
影响因子:
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作者:
Christopher A. Paddon;Farrah L. Bhatti;T. Donohoe;R. Compton
通讯作者:
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影响因子:
8.4
作者:
Christopher A. Paddon;Farrah L. Bhatti;T. Donohoe;R. Compton
通讯作者:
R. Compton