Synthesis,characterization, and hoping transport properties of HCl doped conducting biopolymer‐co‐polyaniline zwitterion hybrids |
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| Authors: | A Tiwari V Sen S R Dhakate A P Mishra V Singh |
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| Institution: | 1. Department of Engineering Materials, National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India;2. Departments of Science and Technology, Technology Bhawan, New Maharauli Road, New Delhi 110016, India;3. Department of Chemistry, University of Allahabad, Allahabad 211002, India |
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| Abstract: | A series of electrically conductive zwitterion hybrid materials were facilely synthesized with anionic acacia gum (AG) and cationic HCl doped polyaniline (PANI) through radical copolymerization method. A representative acacia gum‐polyaniline hybrid (AG‐PANI) was characterized using UV‐vis, FTIR, 1H NMR, and SEM. HCl doped AG‐PANI possesses zwitterion character due to the presence of NH on PANI and ? COO? of AG. The cyclic voltammogram of AG‐PANI showed three anodic peaks at 0.20 V, 0.58 V, and 0.64 V along with two cathodic peaks at 0.50 V and 0.40 V with large capacitive background currents. AG‐PANI exhibited electrical conductivity that was found dependent on the ratio of aniline to AG, temperature, and pH. Its electrical conductivity versus temperature plot indicated Mott's nearest‐neighbor hopping mechanism at the temperature range 83–323 K. The hybridization of AG and PANI yielded eco‐friendly advanced functional materials for technological applications. Copyright © 2008 John Wiley & Sons, Ltd. |
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| Keywords: | anionic biopolymer acacia gum‐polyaniline zwitterion hybrid electroactive surface modification variable range hopping electrical conductivity |
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