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. 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 | |||||||||
| 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: | 03 Oct 2019 18:07 |
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