Polyaniline Nanofibers as Chemiresistive Transducers: Seeded Synthesis, Characterization and DNA Sensing

Tripathy, Suryasnata and Gangwar, Rahul and Vanjari, Siva Rama Krishna and Singh, Shiv Govind (2020) Polyaniline Nanofibers as Chemiresistive Transducers: Seeded Synthesis, Characterization and DNA Sensing. In: 5th IEEE International Conference on Emerging Electronics, ICEE 2020, 26-28 November 2020, New Delhi.

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Abstract

In this paper, seeded synthesis of Polyaniline (PANi) nanofibers, their characterization and use as transducers in chemiresistive DNA sensing have been reported. PANi, among many one-dimensional conductive polymers, has shown great potential as a transducer in chemiresistive biosensing in general and DNA sensing in particular, on account of its natural conductivity, ease of doping and surface functionalization. Herein, PANi nanofibers were synthesized using a seeding method, using single walled carbon nanotube (SWCNT) seeds. Surface morphology of the thus synthesized nanofibers were investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The nanofibers were surface modified with 2% glutaraldehyde for facilitating probe-DNA immobilization, and the results of the same were investigated using Fourier transform infrared spectroscopy. Further, towards analyzing the electrical transport properties of the PANi nanofibers, I-V characteristics were recorded in the applied bias range of -10 V - +10 V, using Agilent B1500A parametric analyzer. As inferred, the I-V response was symmetric about the vertical axis, revealing a crossover between near-Ohmic and power-law dominated regions. As a case study, in this work, the PANi nanofibers were used as transducers for chemiresistive detection of Dengue virus specific consensus primers (DENVCP). © 2020 IEEE.

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IITH Creators:

IITH Creators	ORCiD
Vanjari, Siva Rama Krishna	http://orcid.org/0000-0001-6753-2800
Singh, Shiv Govind	http://orcid.org/0000-0001-7319-879X

Item Type:

Conference or Workshop Item (Paper)

Additional Information:

ACKNOWLEDGMENT The authors would like to thank the ‘Department of science and technology, Fund for improvement of S&T infrastructure’ (DST-FIST), Ministry of Electronics and Information Technology (MeitY), Government of India for funding this research.

Uncontrolled Keywords:

1-D nanofibers; Chemiresistive; DNA Sensors; Hybridization; PANi; Seeded synthesis

Subjects:

Electrical Engineering

Divisions:

Department of Electrical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

16 Nov 2022 06:22

Last Modified:

16 Nov 2022 06:22