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
a Department of Physics, Huazhong Univerisity of Science and Technology , Wuhan 430074, China; b International Center of Material Physics, Academia Sinica, Shenyang 110015, China
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.
Received: 13 October 1997
Accepted manuscript online:
(Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)
Fund: Project supported by the National Natural Science Foundation of China .
Cite this article:
ABDULKADER M.ELAMIN, LIU ZU-LI (刘祖黎), YAO KAI-LUN (姚凯伦) MAGNETIC AND ELECTRICAL PROPERTIES OF TWO POLYANILINE FAMILIES:PANI-H3PO4 and PANI-C4H6O6 1998 Acta Physica Sinica (Overseas Edition) 7 458
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