Fig 1 - uploaded by Bharat Dalui
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UV-Vis spectrum of polyaniline film in dimethyl sulfoxide.
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... solution of (NH4)2SO4 and ZnSO4mixture keeping them 2 cm apart. The charge-discharge studies are carried out applying two different current rates of 25 µA.mg -1 & 100 µA.mg -1 galvanostatically within the potential windows of 0.7 V to 1.5 V using the same instrument,potentiostat/galvanostat (VersaStat TM II, Princeton Applied Research, USA). Fig. 1 shows the UV-Visible absorption spectrum of PANI, recorded under the wavelength range of 200-700 nm. A strong sharp absorption peak is observed at 324 nm due to π-π * transition in the benzene ring and another strong broad peak at 623 nm attributed to exciton formation in the quinonoid ring of PANI. Thus UV-Visible spectrum reveals the ...
