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Title: One-pot synthesis and electrical characterization of monodisperse solid polyaniline sub-microspheres
Authors: Shi, J.-H. 
Wen, T.
Varghese, B. 
Zheng, M.
Sow, C.-H. 
Chan, H.S.O. 
Keywords: Electrical properties
One-pot synthesis
Issue Date: Feb-2011
Citation: Shi, J.-H., Wen, T., Varghese, B., Zheng, M., Sow, C.-H., Chan, H.S.O. (2011-02). One-pot synthesis and electrical characterization of monodisperse solid polyaniline sub-microspheres. Advanced Science Letters 4 (2) : 449-457. ScholarBank@NUS Repository.
Abstract: Monodisperse solid polyaniline (PANI) sub-microspheres were synthesized in nonpolar solvent toluene using chloroaurate acid (HAuCl4) as the oxidant and cetyltrimethylammonium bromide (CTAB) as the phase-transfer reagent. The reduction of chloroaurate acid is accompanied by oxidative polymerization of aniline, leading to the formation of uniform solid PANI sub-microspheres covered with a breadcrumb-like structure, with a diameter of about 400 nm and incorporated with gold nanoparticle aggregates. The resulting solid PANI sub-microspheres were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, UV-visible spectroscopy, and X-ray diffraction (XRD). The formation mechanism of the solid spheres is also discussed. The current-voltage (I-V) characteristics of the PANI submicrospheres were measured, which indicate the conductivity of the samples is related to the degree of doping which is pressure dependent. © 2011 American Scientific Publishers.
Source Title: Advanced Science Letters
ISSN: 19366612
DOI: 10.1166/asl.2011.1225
Appears in Collections:Staff Publications

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