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UV-Vis spectra of polyaniline doped with camphor sulfonic acid in different organic solvents

  • Mining, Materials And Information Engineering
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Abstract

The doping reaction of polyaniline with camphor sulfonic acid (CSAH) in different organic solvents was studied by UV-Vis spectroscopy. The experimental results show that the polaron band of the species was shifted to shorter wavelength when polyaniline was doped with CSAH in N-methyl-2-pyrrolidione (NMP) solvent, while the red shift of polaron band was observed when it was in N, N-dimethylformamide (DMF). It indicates that the influence of different processing solvents on the doping property of polyaniline is greatly different. N-methyl-2-pyrrolidione is a good solvent for polyaniline, polyaniline chain is unfolded in it. The interaction of NMP with CSAH is so strong that the resulting product is apt to dedoping, while the solubility of polyaniline in DMF is relatively low and polyaniline chain is in partly folded state. Thus the doping reaction is kinetically disadvantageous but thermodynamically advantageous.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Central South University of Technology, 410083, Changsha, China

    Yang Chunming, Fang Zheng & Zhang Pingmin

Authors
  1. Yang Chunming
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  2. Fang Zheng
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  3. Zhang Pingmin
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Project supported by the National Natural Science Foundation of China

Synopsis of the first author Yang Chunming, Doctoral student, born in July 1965, majoring in matallurgical and materials physical chemistry.

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Yang, C., Fang, Z. & Zhang, P. UV-Vis spectra of polyaniline doped with camphor sulfonic acid in different organic solvents. J Cent. South Univ. Technol. 6, 127–129 (1999). https://doi.org/10.1007/s11771-999-0014-6

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  • DOI: https://doi.org/10.1007/s11771-999-0014-6

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