中国物理B ›› 1998, Vol. 7 ›› Issue (6): 458-463.doi: 10.1088/1004-423X/7/6/008

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MAGNETIC AND ELECTRICAL PROPERTIES OF TWO POLYANILINE FAMILIES:PANI-H3PO4 and PANI-C4H6O6

ABDULKADER M.ELAMIN1, 刘祖黎1, 姚凯伦2   

  1. (1)Department of Physics, Huazhong Univerisity of Science and Technology , Wuhan 430074, China; (2)International Center of Material Physics, Academia Sinica, Shenyang 110015, China
  • 收稿日期:1997-10-13 出版日期:1998-06-20 发布日期:1998-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China .

MAGNETIC AND ELECTRICAL PROPERTIES OF TWO POLYANILINE FAMILIES:PANI-H3PO4 and PANI-C4H6O6

ABDULKADER M.ELAMINa, LIU ZU-LI (刘祖黎)a, YAO KAI-LUN (姚凯伦)b   

  1. a Department of Physics, Huazhong Univerisity of Science and Technology , Wuhan 430074, China; b International Center of Material Physics, Academia Sinica, Shenyang 110015, China
  • Received:1997-10-13 Online:1998-06-20 Published:1998-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China .

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摘要： We report a comparative study between two kinds of polyaniline, PANI-H3PO4 and PANI-C4H6O6. We have measured the temperature dependence of the dc-conductivity σdc(T) and magnetic susceptibility χT(T). The structure of polyaniline was characterized by F ourier transform infrared technique, electron-spin-resonance and X-ray diffraction. Polyanil ine synthesized with phosphoric and tartaric acids leads to high magnetic suscep tibility χT(at T=295 K)≈10-4 emu/mol.2rings. The dc-conductivity of both kinds of PANI shows a semiconductor behavior and follows the quasi one-dimensional variable-range-hopping model. A compa rison of the magnetic susceptibility shows greater electron localization in PANI-C4H6O6, which is in agreement with the lower conductivity at room temper ature for PANI-C4H6O6.

Abstract: We report a comparative study between two kinds of polyaniline, PANI-H3PO4 and PANI-C4H6O6. We have measured the temperature dependence of the dc-conductivity $\sigma$dc(T) and magnetic susceptibility $\chi$T(T). The structure of polyaniline was characterized by F ourier transform infrared technique, electron-spin-resonance and X-ray diffraction. Polyanil ine synthesized with phosphoric and tartaric acids leads to high magnetic suscep tibility $\chi$T (at T=295 K)≈10-4 emu/mol.2rings. The dc-conductivity of both kinds of PANI shows a semiconductor behavior and follows the quasi one-dimensional variable-range-hopping model. A compa rison of the magnetic susceptibility shows greater electron localization in PANI-C4H6O6, which is in agreement with the lower conductivity at room temper ature for PANI-C4H6O6.

中图分类号:  (Conducting polymers)

  • 82.35.Cd
72.80.Le (Polymers; organic compounds (including organic semiconductors)) 75.30.Cr (Saturation moments and magnetic susceptibilities) 78.30.Jw (Organic compounds, polymers) 81.05.Lg (Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)