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Title: Effect of synthesis parameters on morphology of polyaniline (PANI) and field emission investigation of PANI nanotubes

Polyaniline (PANI) nanostructures have been synthesized by simple chemical oxidation route at different monomer concentration along with variation in synthesis temperature. The effect of variation of synthesis parameters has been revealed using different characterization techniques. The structural and morphological characterization of the synthesized PANI nanostructures was carried out by scanning electron microscopy (SEM), transmission electron microscopy (TEM), whereas Fourier Transform Infrared spectroscopy (FTIR) has been used to reveal the chemical properties. With the variation in the synthesis temperature and monomer concentration, various morphologies characterized by formation of PANI nanoparticles, nanofibres, nanotubes and nanospheres, are revealed from the SEM analysis. The FTIR analysis reveals the formation of conducting state of PANI under prevailing experimental conditions. The field emission investigation of the conducting PANI nanotubes was performed in all metal UHV system at base pressure of 1x10{sup −8} mbar. The turn on field required to draw emission of 1 nA current was observed to be ∼ 2.2 V/μm and threshold field (corresponding to emission current density of 1 µA/cm2) was found to be 3.2 V/μm. The emission current was observed to be stable for more than three hours at a preset value 1 µA. The simple synthesis route and good field emission characteristics indicate potential ofmore » PANI nanofibres as a promising emitter for field emission based micro/nano devices.« less
Authors:
;  [1] ;  [2]
  1. Center for Advanced Studies in Materials Science and Condensed Matter Physics, Department of Physics, University of Pune, Pune-411007 (India)
  2. Department of Physics, Modern College of Arts, Science and Commerce, Shivajinagar, Pune-411005. India (India)
Publication Date:
OSTI Identifier:
22490266
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; CHEMICAL PROPERTIES; CONCENTRATION RATIO; CURRENT DENSITY; FIELD EMISSION; FOURIER TRANSFORMATION; INFRARED SPECTRA; MONOMERS; MORPHOLOGY; NANOPARTICLES; NANOTUBES; OXIDATION; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY