Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
| Publication date | 1/12/2007 |
|---|---|
| Host publication | ECS Trancsactions - Organic and Biological Electrochemistry General Oral and Poster Session |
| Publisher | The Electrochemical Society |
| Pages | 67-77 |
| Number of pages | 11 |
| Edition | 6 |
| ISBN (print) | 9781604238822 |
| <mark>Original language</mark> | English |
| Event | Organic and Biological Electrochemistry General Oral and Poster Session - 211th ECS Meeting - Chicago, IL, United States Duration: 6/05/2007 → 11/05/2007 |
| Conference | Organic and Biological Electrochemistry General Oral and Poster Session - 211th ECS Meeting |
|---|---|
| Country/Territory | United States |
| City | Chicago, IL |
| Period | 6/05/07 → 11/05/07 |
| Name | ECS Transactions |
|---|---|
| Number | 6 |
| Volume | 6 |
| ISSN (Print) | 1938-5862 |
| ISSN (electronic) | 1938-6737 |
| Conference | Organic and Biological Electrochemistry General Oral and Poster Session - 211th ECS Meeting |
|---|---|
| Country/Territory | United States |
| City | Chicago, IL |
| Period | 6/05/07 → 11/05/07 |
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.