Association of electroactive counterions with polyelectrolytes. 2. Comparison of electrostatic and coordinative bonding to a mixed polycation-polypyridine
- Creators
- Kobayashi, Junya
- Anson, Fred C.
Abstract
A soluble polysiloxane containing 4,4'-bipyridine as a singly quaternized pendant group was synthesized and allowed to interact with Fe(CN)_6^(4-), Fe(CN)_5(OH_2)^(3-), and Ru(edta)OH_2^- as counterions. The electrochemical responses (formal potentials and mass-transfer-limited oxidation or reduction currents) of the electroactive counterions were utilized to evaluate diffusion coefficients and equilibrium binding constants. The latter were also measured by equilibrium dialysis. The moderate agreement between the equilibrium constants obtained by the two independent methods lent support to the general procedures employed in analyzing the electrochemical data, although some of the assumptions required for the data analysis may not be fully justified. The results obtained indicate that the polyelectrolyte-counterion binding equilibrium is static rather than dynamic on the electrochemical time scale of a few hundred milliseconds.
Additional Information
© 1991 American Chemical Society. This work was supported in part by the National Science Foundation and the U.S. Army Research Office. J.K. received support from the Shimadzu Corp. (Kyoto). Discussions with Dr. Manshi Ohyanagi were helpful during the initial stages of this work.Additional details
- Eprint ID
- 85347
- DOI
- 10.1021/j100159a089
- Resolver ID
- CaltechAUTHORS:20180316-141224548
- NSF
- Army Research Office (ARO)
- Shimadzu Corporation
- Created
-
2018-03-30Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Arthur Amos Noyes Laboratory of Chemical Physics
- Other Numbering System Identifier
- 8170