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Conducting polymers containing in-chain metal centers: Electropolymerization of oligothienyl-substituted {M(tpy)(2)} complexes and in situ conductivity studies, M = Os(II), Ru(II)
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
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2005 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 44, no 4, 1073-1081 p.Article in journal (Refereed) Published
Abstract [en]

The electropolymerization of a series of Ru and Os bis-terpyridine complexes that form rodlike polymers with bithienyl, quaterthienyl, or hexathienyl bridges has been studied. Absorption spectroscopy, scanning electron microscopy, and cyclic voltammetry have been used to characterize the monomers and resulting polymer films. The absolute dc conductivity of the quaterthienyl-bridged {Ru(tpy)(2)} and {Os(tpy)(2)} polymers is unusually large and independent of the identity of the metal center at 1.6 x 10(-3) S cm(-1). The maximum conductivity occurs at the formal potential of each redox process, which typically is observed for systems where redox conduction is the dominant charge transport mechanism. Significantly, the dc conductivity of the metal-based redox couple observed in these polymers is 2 orders of magnitude higher than that of a comparable nonconjugated system.

Place, publisher, year, edition, pages
2005. Vol. 44, no 4, 1073-1081 p.
Keyword [en]
trifluoride diethyl etherate, electrochemical polymerization, insitu conductivity, hybrid materials, redox polymers, electrodes, films, ruthenium, metallopolymers, polyaniline
Identifiers
URN: urn:nbn:se:kth:diva-14549DOI: 10.1021/ic049221mISI: 000227172200049OAI: oai:DiVA.org:kth-14549DiVA: diva2:332590
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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