An electrochemical experiment using an optically transparent thin layer electrode

Abstract

In this experiment, the use of the OTTLE for determining formal redox potentials, n values, and spectra of redox couples is illustrated by measurements on solutions of ferricyanide and o-tolidine using a variety of electrochemical techniques.

Spectroscopic measurements on metal tetrasulphonato-phthalocyanines

“…The principles of this cell are given by De Angelis and Heineman [8]. Accordingly, the cell was constructed by drilling holes in two perspex blocks.…”

“…The OTTLE [8,9] consisted of a nickel minigrid (100 mesh and about 1 cm*) covered with a thin layer of gold (2 pm) with a transmission of approximately 60% (VECO).…”

Studies of Biological Redox Systems by Thin-Layer Electrochemical Techniques

“…In this case the good precision of the spectropotentiostatic technique is essential in defining the nonlinear behavior. Although it was originally developed for the study of biological redox components (3), the OTTLE spectropotentiostatic technique is equally useful for the study of inorganic metal complexes (37) and organic compounds (38). …”

Analytical aspects of absorption spectroelectrochemistry at a platinum electrode—II Quantitative basis and study of organic compounds☆

“…Nine years later, the ex periment was reported as a teaching experiment. 19 The cell thickness used was 1.7 x 10-2 cm, which should theoretically give a calibration slope of 1.0 x 10 3 1./mole (sensitivity 4.2 x 10-6 M for 1% absorption), but the absorbance results reported cor respond to a value of 6.2 x 10 2 1./mole (sensitivity 7.1 x 10-6 M for 1% absorption) i.e., the o-tolidine used apparently had a molar absorptivity of 3.6 x 10 4 l.mole-1 .cm-1 ). The absorbance-time behaviour was not reported.…”