Abstract
In the present work polyaniline (PAni) nanofibers have been synthesized by interfacial polymerization technique. Pellets are made from PAni nanofibers and characterized by XRD, TEM, UV-Vis spectroscopy, Photoluminescence spectroscopy and Four-probe conductivity measurements. XRD results show the increase in the degree of crystallinity with the increase of concentration of dopant acid. It also shows peak broadening, which indicates reduction of fiber diameter with increasing dopant concentration. TEM micrograph confirms the formation of PAni nanofibers of diameter around 20–30 nanometer. The UV-Visible spectra show three prominent peaks at 320nm, 430nm and 800nm, which confirm the formation of a single broad polaronic band in the band-gap of the PAni nanofibers. Four-probe measurements show that the electrical conductivity of PAni nanofibers increases with doping. PL spectra show a broad peak in violet region (λ = 405nm) and indicate a decrease of fiber diameter with the increase in HCl concentration.
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References
F. K. Ko, “Nanofiber Technology: Bridging the gap between nano and macro world”, in M.C. Rocco, R.S. William and P. Alivisiatos, eds., Nanotechnology Research Directions: IWGN Workshop Report, National Science and Technology Council, September (1999)
W.S. Huang, B.D. Humphrey and A.G. MacDiarmid. “Polyaniline, novel conducting polymer”, J. Chem. Soc., Faraday Trans. 1(82), 2385 (1986)
A.G. MacDiarmid. “Polyaniline and polypyrrole: where are we headed?”, Synth. Met. 84, 27 (1997)
A.G. MacDiarmid, et al. “Polyaniline: Interconversion of Metallic and Insulating Forms”, Mol. Cryst. Liq. Cryst. 121, 173 (1985)
J. Huang, “Synthesis and applications of conducting polymer polyaniline nanofibers”, Pure Appl. Chem. 78(1) 15 (2006)
P. Chandrasekhar. Conducting Polymers, fundamentals and applications: A Practical Approach, (Kluwer Academic, Boston) 760 (1999)
Y. Zhou, M. Freitag, J. Hone, C. Staii, A.T. Johnson Jr., N. J. Pinto, and A.G. MacDiarmid, “Fabrication and electrical characterization of polyaniline-based nanofibers with diameter below 30 nm”, Appl phys Lett, 83(18), 3800 (2003)
J. Huang and R. B. Kaner, “A general chemical route to polyaniline nanofibers”, J Am Chem Soc, 126, 851 (2004).
R. J. Tseng, J. Huang, J. Ouyang, R. B. Kaner and Y. Yang, “Polyaniline nanofiber/gold nanoparticle nonvolatile memory”, Nano Lett, 5(6), 1077 (2005)
M. Li, Y. Guo, Y. Wei, A.G. MacDiarmid and P. I. Lelkes, “Electrospinning polyaniline-contained gelatin nanofibers for tissue engineering applications”, Biomaterials, 27, 2705 (2006)
H.M. Huang, J.Y. Li and C. Wang, “An electrospinning approach to Polyaniline nanofibers by template”, Solid State Phenom, 121–123, 579 (2007)
A. Z. Sadek, C. O. Baker, D. A. Powell, W. Wlodarski, R. B. Kaner and K. Kalantar-zadeh. “Polyaniline Nanofiber Based Surface Acoustic Wave Gas Sensors—Effect of Nanofiber Diameter on H2 Response”, IEEE Sens J, 7(2), 213 (2007)
J. Huang, S. Virji, B.H. Weiller and R.B. Kaner, “Polyaniline nanofibers: Facile synthesis and Chemical Sensors”, J Am Chem Soc, 125, 314 (2003)
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Banerjee, S., Sarmah, S. & Kumar, A. Photoluminescence studies in HCl-doped polyaniline nanofibers. J Opt 38, 124–130 (2009). https://doi.org/10.1007/s12596-009-0011-z
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DOI: https://doi.org/10.1007/s12596-009-0011-z