CaltechAUTHORS
  A Caltech Library Service

Diffusion Coefficients of Intrinsically Electroactive Polyelectrolytes and of Counterions Bound to Them

Hatozaki, Osamu and Anson, Fred C. (1996) Diffusion Coefficients of Intrinsically Electroactive Polyelectrolytes and of Counterions Bound to Them. Journal of Physical Chemistry, 100 (20). pp. 8448-8453. ISSN 0022-3654 . https://resolver.caltech.edu/CaltechAUTHORS:20180720-144653154

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20180720-144653154

Abstract

An electroactive label was attached to poly(acrylic acid) (molecular weight = 5000) by reaction with ferrocenylethanol. The resulting ferrocene label was stable when the polymer was dissolved in aqueous solutions, and the diffusion coefficient of the labeled polymer was estimated from the currents obtained as the ferrocene was oxidized at a rotating disk electrode. Although strong adsorption of the polymer on the electrode surfaces depressed the oxidation currents below the convection−diffusion controlled values at rotating disk electrodes, it was still possible to estimate diffusion coefficients by appropriate analysis of the rotation rate dependences of the measured currents. At pH values where the labeled polymer became a polyanion, its diffusion coefficient was also estimated from the reduction currents for Ru(NH_3)_6^(3+) or Co(NH_3)_6^(3+) counterions bound electrostatically to the polyelectrolyte. Good agreement was obtained between the diffusion coefficients estimated by the two independent routes.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://dx.doi.org/10.1021/jp953740gDOIArticle
Additional Information:© 1996 American Chemical Society. Received: December 15, 1995; In Final Form: March 4, 1996. This work was supported in part by the U.S. Army Research Office (Durham).
Funders:
Funding AgencyGrant Number
Army Research Office (ARO)UNSPECIFIED
Issue or Number:20
Record Number:CaltechAUTHORS:20180720-144653154
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180720-144653154
Official Citation:Diffusion Coefficients of Intrinsically Electroactive Polyelectrolytes and of Counterions Bound to Them Osamu Hatozaki and Fred C. Anson The Journal of Physical Chemistry 1996 100 (20), 8448-8453 DOI: 10.1021/jp953740g
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88086
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:23 Jul 2018 20:30
Last Modified:03 Oct 2019 20:02

Repository Staff Only: item control page