Aliphatic Polyamine Oxidation Reaction Mechanism at Boron‐doped Microcrystalline and Ultrananocrystalline Diamond Electrodes
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2015-09-29 |
| Journal | Electroanalysis |
| Authors | Małgorzata A. Witek, Miles D. Koppang, Greg M. Swain |
| Institutions | University of North Carolina at Chapel Hill, Michigan State University |
| Citations | 10 |
Abstract
Section titled “Abstract”Abstract The oxidation reaction mechanism of several aliphatic polyamines was studied using diamond electrodes with different doping levels and non‐diamond carbon impurity content. The important roles of surface boron and localized non‐diamond carbon sites in the polyamine oxidation reaction mechanism were confirmed. A well defined oxidation peak was seen for all the amines that was dependent on the onset potential for water discharge. E p ox shifted negative and the i p ox increased with increasing solution pH. i p ox also increased with increasing boron doping level or surface boron site density. FIA‐EC analysis revealed a reproducible response for the aliphatic polyamines in a binary solvent (7/93 %) acetonitrile/borate buffer, pH 11.2. Optimum signal‐to‐background ratios for the aliphatic polyamines were seen at potentials between 650 and 670 mV.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- **** - Polyamines as Biochemical Markers of Normal and Malignant Growth.