Electrochemically Fabricated Pyrrole Copolymer Thin Films and Their Electroactivity in Neutral Aqueous Solution

Abstract

The functionalized pyrrole copolymers were fabricated by electropolymerization of pyrrole (Py) and functionalized pyrrole monomers, pyrrole-3-carboxylic acid (P3C) and 4-(3-pyrrole) butyric acid (PBA). The electrochemical behavior and doping/dedoping properties of the obtained copolymer thin films were investigated by cyclic voltammetry (CV) in neutral phosphate-buffered saline (PBS) solution. Moreover, the functionalized pyrrole copolymer films were characterized by UV-vis absorption spectroscopy and atomic force microscopy (AFM). The obtained copolymer thin films showed good stability and electroactivity in neutral PBS solution. The presented functionalized pyrrole copolymer thin films may possess potential applications to study in various systems of the biosensors.

Keywords:

• Conducting polymer
• copolymer
• electropolymerization
• pyrrole

Acknowledgments

The authors gratefully acknowledge the Office of Higher Education Commission, Ministry of Education under the program Strategic Scholarships for Frontier Research Network; Department of Chemistry, Faculty of Science, Chiang Mai University and Graduate School Chiang Mai University; the National Research University Project under Thailand's Office of the Higher Education Commission, Thailand and the “Global Circus” Program of Niigata University supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan for financial support.