Cameron, Colin G. and Pittman, Timothy J. and Pickup, Peter G. (2001) Electron Transport in Ru and Os Polybenzimidazole-Based Metallopolymers. Journal of Physical Chemistry B, 105 (37). pp. 8838-8844. ISSN 1520-6106. doi:10.1021/jp0109325. https://resolver.caltech.edu/CaltechAUTHORS:20170616-133753953
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Abstract
A series of conjugated polymer−redox polymer hybrids based on the complexation of poly-(bibenzimidazoles) with bis-(2,2‘-bipyridyl)Ru^(2+) and bis-(2,2‘-bipyridyl)Os^(2+) has been prepared to investigate the effects of electronic communication between metal centers through the conjugated backbone. Electron transport rates in the mixed valence M(III/II) states have been measured as electron diffusion coefficients (D_e) by impedance spectroscopy and dual (sandwich) electrode voltammetry. D_e values are generally higher than for nonconjugated Ru(2,2‘-bipyridyl)^3^(3+/2+)-type polymers, and their dependencies on the metal (Os or Ru), pH and nature of the polymer backbone are consistent with significant contributions from superexchange mechanisms. Hole-type superexchange appears to dominate in the Ru polymers, while a number of observations indicate that electron-type superexchange may dominate for the Os complexes.
Item Type: | Article | |||||||||
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Additional Information: | © 2001 American Chemical Society. Received 12 March 2001. Published online 16 August 2001. Published in print 1 September 2001. This work was supported by the Natural Sciences and Engineering Research Council of Canada and Memorial University. | |||||||||
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Issue or Number: | 37 | |||||||||
DOI: | 10.1021/jp0109325 | |||||||||
Record Number: | CaltechAUTHORS:20170616-133753953 | |||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20170616-133753953 | |||||||||
Official Citation: | Electron Transport in Ru and Os Polybenzimidazole-Based Metallopolymers Colin G. Cameron, Timothy J. Pittman, and Peter G. Pickup The Journal of Physical Chemistry B 2001 105 (37), 8838-8844 DOI: 10.1021/jp0109325 | |||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
ID Code: | 78288 | |||||||||
Collection: | CaltechAUTHORS | |||||||||
Deposited By: | Ruth Sustaita | |||||||||
Deposited On: | 16 Jun 2017 21:04 | |||||||||
Last Modified: | 15 Nov 2021 17:38 |
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