TRANSPORT OF NEUTRAL SPECIES IN ELECTROACTIVE POLYMER-FILMS

被引：52

作者：

HILLMAN, AR ^{[1
]}

LOVEDAY, DC ^{[1
]}

SWANN, MJ ^{[1
]}

BRUCKENSTEIN, S ^{[1
]}

WILDE, CP ^{[1
]}

机构：

[1] SUNY BUFFALO, DEPT CHEM, BUFFALO, NY 14214 USA

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1991年 / 87卷 / 13期

关键词：

D O I：

10.1039/ft9918702047

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new procedure has been applied to the analysis of electrochemical quartz crystal microbalance data for transfer of mobile species in electroactive polymer films. The procedure enables the distinction between global equilibrium and rate-limiting transfer of electrons, ions and neutral species during film redox conversion. For polyvinylferrocene, polythionine and polybithiophene films (under the experimental conditions employed), transfer of a neutral species was found to be rate limiting. In the first two cases, solvent (water) was unequivocally identified as the slow species. In the third case, solvent (CH3CN) transfer was tentatively identified as the rate-limiting step. Slow transfer of neutral species is due to the absence of migration effects, which can aid ion transfer. Transfer rates depend on direction of transfer in all three systems.

引用

页码：2047 / 2053

页数：7

共 40 条

[11]

BRUCKENSTEIN S, IN PRESS J PHYS CHEM

[12] DIFFUSION MIGRATION IMPEDANCES FOR FINITE, ONE-DIMENSIONAL TRANSPORT IN THIN-LAYER AND MEMBRANE CELLS .2. MIXED CONDUCTION CASES - OS(III)/OS(II)CIO4 POLYMER MEMBRANES INCLUDING STEADY-STATE IV RESPONSES [J].