Andrieux, F. P.L. and Boxall, C. (2007) Electrochemical study of rose bengal at the electrochemical quartz crystal microbalance. In: ECS Trancsactions - Organic and Biological Electrochemistry General Oral and Poster Session :. ECS Transactions (6). The Electrochemical Society, USA, pp. 67-77. ISBN 9781604238822
Full text not available from this repository.Abstract
We present the results of an Electrochemical Quartz Crystal Microbalance study of the dark electrochemical behavior of rose bengal on gold piezoelectrodes in phosphate buffer at pH=7. Five oxidation and two reduction peaks were identified. The first oxidation process (Epox1=0.52V) is attributed to the formation of a Charge Transfer Complex (CTC) of rose bengal. The second process (Epox2=0.76V) is due to the partial breakdown of that CTC. The third process (Epox3=1.12V) is the electrochemical formation of a rose bengal polymer. Peak four (Epox4=1.24V) is due to the electrochemistry of the underlying gold surface, whilst peak five (Ep ox5=1.45V) is attributed to a process that facilitates transpassive polymerization. The first reduction peak (Epred1=0.42V) is due to gold oxide stripping and the second (Epred2=0.36V) is the reduction of residual charge transfer complex formed in the first oxidation process.