Electrochemical preparation of self-doped poly(N-(3-sulfonicpropion) anilide) and its application in sensing ethanol
✍ Scribed by Chunming Jiang; Hui Chen; Jilie Kong
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 634 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
A novel containing sulfonic acid group aniline monomer, N-(3-sulfonicpropion) anilide, was synthesized in three steps and subsequently to be electropolymerized on a glassy carbon electrode (GCE). The resulting self-doped poly(N-(3-sulfonicpropion) anilide) (SPAN/GCE) held 79.5% electrochemical activity when transferred from 0.1 M pH 7.0 PBS to 0.1 M pH 10.0 PBS, indicating its remarkable extension of the redox activity. The SPAN/GCE was characterized by X-ray photoelectron spectroscopy (XPS) and found that 30% of the nitrogen atoms are sulfonated. Preliminary experimental results show that after the immobilization of alcohol dehydrogenase (ADH) on the SPAN/GCE (ADH/SPAN/GCE), the ADH/SPAN/GCE showed good electrocatalytic activity toward the oxidation of ethanol. These reveal that the SPAN/GCE is quite promising in the fields of biosensors, biofuel cells and other bioelectrochemical devices.