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Effect of ionic liquid on polyaniline chemically synthesised under falling-pH conditions |
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| Authors: | Anurag Krishna Cosmin Laslau Geoffrey I. N. Waterhouse Zoran D. Zujovic Jadranka Travas-Sejdic |
| Affiliation: | 1327. Department of Applied Chemistry and Polymer Technology, Delhi Technological University, Bawana Road, Delhi, 110042, India 2327. Polymer Electronics Research Centre, School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand 3327. MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Laby 410, Gate 6 Kelburn Parade, Kelburn, Wellington, 6140, New Zealand 4327. School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand |
| Abstract: | This study investigates the effect of the ionic liquid 1-butyl-3-methyl imidazolium chloride ([bmim]Cl) on the morphological, structural, and electronic properties of polyaniline (PANI) products synthesised by the falling-pH method. Products were characterised by SEM, FT-IR, UVVIS, N2-physisorption, and conductivity measurements. The [bmim]Cl addition strongly influenced the PANI morphology, specific surface area, porosity, and conductivity. Depending on the [bmim]Cl: ANI ratio and the synthesis pH, a wide range of PANI nanostructures could be prepared, with rod-like, and fibre-like elongated structures being the dominant morphology under most experimental conditions. Samples prepared in the presence of [bmim]Cl exhibit specific areas of ca 22–35 m2 g?1. The conductivity of the final products depends on the [bmim]Cl: ANI ratio. Temperature dependence of conductivity in the temperature range from 77 K to 300 K was also studied. |
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