APPLICATION OF SQUARE-WAVE VOLTAMMETRY TO STRONGLY ADSORBED QUASI-REVERSIBLE REDOX MOLECULES

被引：76

作者：

REEVES, JH ^{[1
]}

SONG, S ^{[1
]}

BOWDEN, EF ^{[1
]}

机构：

[1] N CAROLINA STATE UNIV,DEPT CHEM,RALEIGH,NC 27695

来源：

ANALYTICAL CHEMISTRY | 1993年 / 65卷 / 06期

关键词：

D O I：

10.1021/ac00054a006

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The theory and application of square wave voltammetry to surface-confined quasi-reversible redox molecules (Ox + ne-= Red) is described. Theoretical voltammograms were calculated based on the following assumptions: (1) stable redox states; (2) monolayer or less surface coverage; (3) equivalent surface sites and adsorbates; (4) no adsorbate-adsorbate interactions; (5) no diffusional contributions to the current; and (6) Butler-Volmer electrode kinetics. A working curve strategy based on peak separation between positive-scan and negative-scan net current voltammograms was developed to facilitate the semiquantitative determination of electron-transfer rate constants. Major theoretical predictions were experimentally confirmed through characterization of strongly adsorbed cytochrome con carboxylic acid-terminated self-assembled monolayer electrodes of the alkanethiol/gold type.

引用

页码：683 / 688

页数：6

共 39 条

[21] SQUARE-WAVE VOLTAMMETRY OF AN ADSORBED REACTANT [J].