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Nature of paramagnetic centers in polyaniline as studied by SQUID magnetometry

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Abstract

The temperature and field dependences of the magnetic moment of polyaniline powder doped by m-cresol were measured by SQUID magnetometry in the temperature range 2–300 K at 1000 Oe and in the range 0–50000 Oe at 2 K, respectively. The field dependence is not described by the Brillouin function for spin 1/2, as is expected in the framework of a commonly accepted “metallic” model. Both dependences are quite correctly described by a “triplet” model using a distribution of singlet-triplet splitting (E) with the density distribution function having a narrow peak near E = 0.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Akad. Semenova, 142432, Chernogolovka, Moscow region, Russian

    A. V. Kulikov & M. N. Shishlov

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  1. A. V. Kulikov
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  2. M. N. Shishlov
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Correspondence to A. V. Kulikov.

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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 890–894, May, 2010.

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Kulikov, A.V., Shishlov, M.N. Nature of paramagnetic centers in polyaniline as studied by SQUID magnetometry. Russ Chem Bull 59, 912–916 (2010). https://doi.org/10.1007/s11172-010-0184-2

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  • DOI: https://doi.org/10.1007/s11172-010-0184-2

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