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- E-ISSN 2288-8985
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Electrochemical Properties and Synthesis of Poly(ether)tailed Cobalt(II)bipyridine Complex
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1996, v.9 no.3, pp.292-301
Kim,
I. K., Jun,
I. C., &
Murray,
R.
W.
(1996). Electrochemical Properties and Synthesis of Poly(ether)tailed Cobalt(II)bipyridine Complex. Analytical Science and Technology, 9(3), 292-301.
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Abstract
The synthesis of poly(ether)tailed bipyridine complex as redox reaction probes has advanced attempts to interpret very slow diffusion and heterogeneous electron transfer. Diffusion coefficients as low as <TEX>$1.5{\times}10^{-15}cm^2/s$</TEX> have been observed for the oxidation of neat <TEX>$Co(bpy(ppgm)_2)_{3^-}(ClO_4)_2$</TEX> with <TEX>$LiClO_4$</TEX> electrolyte. Heterogeneous electron transfer rate constants of materials were found to vary with diffusion coefficient. The decrease in k as the diffusion coefficient decreases was actually caused by the decreasing D. Diffusion coefficient for compound of strong ion pairing anion(<TEX>$ClO{_4}^-$</TEX>) was much smaller than the diffusion coefficient for compound of weak ion pairing anion(<TEX>$CF_3COO^-$</TEX>).
- keywords
- Diffusion coefficient, heterogeneous electron transfer rate constant, microelectrode, poly(ether)tailed bipyridine complex
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