J. Owens, G. Dryhurst
Jul 11, 1977
Citations
0
Influential Citations
12
Citations
Journal
Journal of Electroanalytical Chemistry
Abstract
Abstract The electrochemical oxidation of 5,6-diaminouracil has been studied by thin-layer spectroelectrochemistry at a gold minigrid electrode. It has been found that 5,6-diaminouracil is electrooxidized to a diimine intermediate which can be detected by means of its u.v. absorption spectrum. The kinetics of hydrolysis of the diimine species has been measured and the process is a first order reaction. The solution rate constant over the range of pH from 4 to 6 has been measured. The results of these kinetic studies by thin-layer spectroelectrochemistry confirm the results obtained by purely electrochemical methods. This study also indicates the potential utility of thin-layer spectroelectrochemical techniques for the investigation of the electrooxidation reactions of biologically important purines.