Solvothermal synthesis of a polyaniline nanocomposite - a prospective biosensor electrode material

Agrawalla, RK and Meriga, V and Paul, R and Chakraborty, AK and Mitra, AK (2016) Solvothermal synthesis of a polyaniline nanocomposite - a prospective biosensor electrode material. In: EXPRESS POLYMER LETTERS, 10 (9). pp. 780-787.

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Abstract

Polyaniline (PANI) is the most important conducting polymer with excellent electrochemical properties. So PANI-based biosensors may find wide applications in medical diagnostics. We report here a ternary nanocomposite of gold nanoparticle- decorated single- walled carbon nanotubes (SWCNTs) embedded in sulfonated polyaniline matrix, prepared using a simple solvothermal chemical route. The structural and morphological characteristics have been determined by electron microscopy, X-ray diffraction and Raman spectroscopy. Optical characteristics of the nanocomposite have been determined by ultraviolet (UV)-visible absorption spectroscopy and photoluminescence spectroscopy. The direct current (DC)-conductivity measurement of the material shows a significant increase in electrical conductivity at 353 K from 7.80.10(-2) S/m for pure SPANI to 10.91 S/m for the 3-phase nanocomposite as synthesized in the present investigations. Thus the incorporation of SWCNT/Au nanohybrid fibers in the PANI matrix enhanced its electrical properties. Sulfonation increased the process-ability of the material, as the samples have now been found to be soluble in water and common organic solvents like DMSO. Such a functional nanocomposite will make an excellent biosensor electrode material.

Item Type:	Journal Article
Publication:	EXPRESS POLYMER LETTERS
Additional Information:	Copy right for this article belongs to the BUDAPEST UNIV TECHNOL & ECON, DEPT POLYMER ENG, MUEGYETEM RKP 3, BUDAPEST, H-1111, HUNGARY
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	19 Aug 2016 10:14
Last Modified:	19 Aug 2016 10:14
URI:	http://eprints.iisc.ac.in/id/eprint/54361

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