ASSOCIATION OF ELECTROACTIVE COUNTERIONS WITH POLYELECTROLYTES .4. COORDINATIVE BINDING OF RU(EDTA) TO POLY(4-VINYLPYRIDINE)

被引：23

作者：

JIANG, RZ ^{[1
]}

ANSON, FC ^{[1
]}

机构：

[1] CALTECH,ARTHUR AMOS NOYES LABS,PASADENA,CA 91125

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 01期

关键词：

D O I：

10.1021/j100180a083

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：

The coordination of Ru(III)(edta)OH2- and Ru(II)(edta)OH22- (edta = ethylenediaminetetraacetate) to poly(4-vinylpyridine) (PVP) dissolved in aqueous acid was investigated with electrochemical techniques. Rotating disk voltammetry provided estimates of the diffusion coefficients of the polymer-metal complex. The diffusional rate of the Ru(III)(edta)PVP complex, but not the Ru(II)(edta)PVP complex, is enhanced substantially by homogeneous electron transfer between Ru(III)(edta) centers bound to the PVP and Ru(II)(edta)OH22- complexes generated at the electrode surface. The diffusion coefficient measured for the Ru(II)(edta)PVP complex, 1.4 x 10(-7) cm2 s-1, provides an estimate of the diffusion coefficient for the protonated PVP chains themselves.

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页码：452 / 458

页数：7

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