cqvip:The doping reaction of pristine polyaniline(udpan) with camphor sulfonic acid in N methyl 2 pyrrolidone(NMP) and N,N dimethylformamide(DMF) has been studied by UV Vis spectrometry. The results showed that the polaron band of the compound doped in NMP at 800 nm shifted to short wavelength with time and that of doped in DMF at 725 nm to long wavelength. The results are discussed in terms of the solubility behavior of the doped compounds in different solvents.
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