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International Journal of Polymer Science
Volume 2015, Article ID 650516, 7 pages
http://dx.doi.org/10.1155/2015/650516
Research Article

In Situ Study of Electropolymerized Poly(3-aminobenzoic acid) Thin Film on BD-R and DVD-R Grating Substrates by Electrochemical-Transmission Surface Plasmon Resonance Spectroscopy

1Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
2Center for Transdisciplinary Research and Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
3Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand

Received 16 October 2014; Accepted 16 February 2015

Academic Editor: Angel Concheiro

Copyright © 2015 Saengrawee Sriwichai et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The electropolymerization process and doping/dedoping properties of poly(3-aminobenzoic acid) (PABA) thin films on gold-coated commercial BD-R and DVD-R grating substrates were simultaneously studied by the combination of electrochemical technique and transmission surface plasmon resonance (TSPR) spectroscopy. The optical property as a function of the applied potentials and time dependence during electropolymerization were studied. The obtained TSPR wavelength scan spectra after electropolymerization showed that the maximum wavelength slightly shifted to longer wavelength indicating the increase of film thickness. In addition, the change during construction of PABA-based immunosensor for label-free detection of human immunoglobulin G can be observed.