Ion and solvent transfer discrimination at a poly(o-toluidine) film exposed to HClO4 by combined electrochemical quartz crystal microbalance (EQCM) and probe beam deflection (PBD)

被引：33

作者：

Henderson, MJ

Hillman, AR ^{[1
]}

Vieil, E

机构：

[1] Univ Leicester, Dept Chem, Leicester LE1 7RH, Leics, England

[2] CEA, UMR 5819, Dept Rech Fondamentale Mat Condensee, Electrochim Mol Lab, F-38054 Grenoble 9, France

[3] CNRS, F-38054 Grenoble 9, France

[4] UJF, F-38054 Grenoble 9, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1999年 / 103卷 / 42期

关键词：

D O I：

10.1021/jp9910845

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 combined electrochemical quartz crystal microbalance (EQCM) and probe beam deflection (PBD) instrument was used to monitor the mobile species transfers at the first and second redox steps of thin (Gamma congruent to 5 x 10(-8) mol cm(-2)) poly(o-toluidine) films exposed to either 0.01, 0.1, or 1.0 mol dm(-3) HClO4 aqueous electrolyte. A comparison of the predicted PBD profiles calculated from the current and mass responses to that of the measured PBD signal, by temporal convolution anaysis, enabled the contributions of cation (H+), anion (ClO4-), and solvent (H2O) transfer at the first redox step to be discriminated quantitatively. A further separation of the slow moving solvent counter flux from fast ion exchange was possible by shortening the experimental time scale.

引用

页码：8899 / 8907

页数：9

共 35 条

[1] AN ELECTROCHEMICAL QUARTZ CRYSTAL MICROBALANCE STUDY OF THE INFLUENCE OF PH AND SOLUTION COMPOSITION ON THE ELECTROCHEMICAL-BEHAVIOR OF POLY(ANILINE) FILMS [J].