Potential modulated attenuated total reflectance spectroscopy of Prussian blue films on ITO

被引：10

作者：

Araci, Zeynap Ozkan ^{[1
]}

Runge, Anne F. ^{[1
]}

Doherty, Walter J., III ^{[1
]}

Saavedra, S. Scott ^{[1
]}

机构：

[1] Univ Arizona, Dept Chem, Tucson, AZ 85721 USA

来源：

ISRAEL JOURNAL OF CHEMISTRY | 2006年 / 46卷 / 03期

关键词：

D O I：

10.1560/IJC_46_3_249

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Potential modulated attenuated total reflectance (PM-ATR) spectroscopy has been employed to study charge transfer processes in Prussian blue (PB) films deposited on indium tin oxide (ITO) electrodes. PM-ATR is a planar waveguide-based spectroelectrochemical technique in which the optical response of an electroactive film is measured as a function of applied potential and modulation frequency. The multiple internal reflection geometry of PM-ATR provides a significant sensitivity advantage over the single external reflectance geometry that has been employed in most prior electroreflectance studies. The apparent electron transfer rate of PB on ITO obtained using PM-ATR was compared to that obtained with conventional cyclic voltammetry; the respective rates, 0.33 +/- 0.15 s(-1) (n = 3) and 0.71 +/- 0.37 s(-1) (n = 10), are in good agreement.

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页码：249 / 255

页数：7

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