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Charge propagation ...
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Larsson, HenrikUmeå universitet,Kemiska institutionen
(författare)
Charge propagation in [Os(bpy)2(PVP)xCl]Cl polymers. An example of mean field behavior in a system with constrained diffusion of redox sites?
- Artikel/kapitelEngelska1995
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Elsevier,1995
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LIBRIS-ID:oai:DiVA.org:umu-112730
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-112730URI
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https://doi.org/10.1016/0022-0728(94)03654-LDOI
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Språk:engelska
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Sammanfattning på:engelska
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Originally included in thesis in manuscript form.
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Chronocoulometry and impedance spectroscopy were used to study the dynamics of charge transport in a series of methylated [Os(bpy)(2)(PVP)(x)Cl]Cl polymers (PVP = poly(4-vinylpyridine); bpy = 2,2'-bipyridine; 5 less than or equal to x less than or equal to 40) which were deposited as thin firms on glassy carbon electrodes. Apparent charge propagation diffusion coefficients D-app were of the order of 10(-8) cm(2) s(-1) and were approximately linearly dependent on the total concentration of redox sites but independent of the ratio of oxidized to reduced centres present in a particular coating. Attempts were made to explain these observations in terms of a recent theory of charge transport appropriate for systems in which the redox sites are permanently attached to the polymer chains. It was found that the concentration dependence and magnitude of D-app could be explained satisfactorily by a mean field model of charge propagation.
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Sharp, MichaelUmeå universitet,Kemiska institutionen(Swepub:umu)mish0001
(författare)
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Umeå universitetKemiska institutionen
(creator_code:org_t)
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Ingår i:Journal of Electroanalytical Chemistry: Elsevier381:1-2, s. 133-1420022-07281873-2569
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