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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)

Hjelm, J. and Handel, R. W. and Hagfeldt, A. and Constable, Edwin C. and Housecroft, Catherine E. and Forster, R. J.. (2005) 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). Inorganic Chemistry, 44 (4). pp. 1073-1081.

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Official URL: http://edoc.unibas.ch/39194/

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Abstract

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.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Constable, Edwin Charles
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:0020-1669
e-ISSN:1520-510X
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:12 Apr 2017 08:37
Deposited On:03 Feb 2016 09:11

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