Circular Dichroism Spectroelectrochemical and Voltammetric Studies of Vitamin B2

✍ Scribed by Xiaoqiang Liu; Yongchun Zhu; Guangjin Cheng; Shaojun Dong

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 115 KB
• Volume: 13
• Category: Article
• ISSN: 1040-0397
• DOI: 10.1002/1521-4109(200109)13:13<1071::aid-elan1071>3.0.co;2-r

✦ Synopsis

Electroreduction of vitamin B 2 (VB 2 ) was studied by in situ circular dichroism (CD) spectroelectrochemistry (SEC) with a long optical path length thin layer cell (LOPLTLC). The results showed that the electroreduction of VB 2 in phosphate buffer solution (PBS) (pH 6.8) was a two-electron electrochemical process with weak adsorption of the reactant at the glassy carbon (GC) electrode surface. The CD spectra change of VB 2 in the reduction process was explained with the theory of electronic states. We also treated the CD spectra with a singular value decomposition least square (SVDLS) method, and have found not only the number of components and their spectra, but also the fraction distribution of each component in the electroreduction process of VB 2 .