Synthesis of polyaniline/polytoluidine block copolymer via the pernigraniline oxidation state |
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| Authors: | Luiz H C Mattoso Osvaldo N Oliveira Roberto M Faria Sanjeev K Manohar Arthur J Epstein Alan G Macdiarmid |
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| Affiliation: | Polymer Institute, Slovak Academy of Sciences, 842 36 Bratislava, Slovak Republic |
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| Abstract: | Polyaniline was electrochemically synthesized in the emeraldine oxidation state and then converted to the pernigraniline oxidation state by applying an electric potential under optimized conditions. The stability/reactivity of polyaniline in the pernigraniline oxidation state was evaluated in various aqueous media. The products of the reduction of the pernigraniline oxidation state by o-toluidine were analyzed by gel permeation chromatography, ultraviolet–visible and infrared spectroscopies, and cyclic voltammetry. The results are consistent with the synthesis of a diblock copolymer of polyaniline/poly(o-toluidine) and also of some poly(o-toluidine) homopolymer in the emeraldine oxidation state as a side product. |
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| Keywords: | polyaniline pernigraniline oxidation state copolymer synthesis electrochemistry |
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