Puri, Nidhi and Mishra, Sujeet K. and Niazi, Asad and Biradar, Ashok M. and -, Rajesh (2013) Structural and impedance spectroscopic studies on biofunctionalized poly(pyrrole-co-pyrrolepropylic acid) film. Synthetic Metals, 169. pp. 18-24. ISSN 0379-6779

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Abstract

We report structural and ac impedimetric properties of a biofunctionalized copolymer poly(pyrrole-co-pyrrolepropylic acid) (PPy-PPa) film electrochemically grown onto an indium-tin-oxide (ITO) coated glass plate. The copolymer film was bio-functionalized with myoglobin protein antibody, Ab-cMb, to form a bioelectrode. The bioelectrode was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), contact angle measurement and electrochemical techniques. The ac impedance studies of the PPy-PPa copolymer film show both charge transfer resistance (R-et) and ions diffusion (W-R) characteristics, at high and low frequency regions respectively, whereas the biofunctionalized electrode shows only Ret in a comparatively low ac frequency region with respect to the PPy-PPa film, indicating a good biocompatibility of the polymer electrode. The ac impedimetric performance of the bioelectrode was studied toward the detection of myoglobin protein antigen, Ag-cMb, in a phosphate buffer solution. The bioelectrode exhibited a linear impedance response to Ag-cMb concentration in the range long to 1 mu g mL(-1).

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Materials Science Applied Physics/Condensed Matter Polymer Science
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	03 Jul 2020 10:14
Last Modified:	03 Jul 2020 10:14
URI:	http://npl.csircentral.net/id/eprint/3046

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