Journal of East China Normal University(Natural Sc ›› 2009, Vol. 2009 ›› Issue (4): 124-130.

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Electrical conductivity of polyphenylacetylene doped by bromine vapor

LIANG Dan,HAN Feifei,WANG Hongmin,TANG Guoqiang
YE Jing,WU Lingjuan, XU Xuecheng

  

  1. Center of Functional Nanomaterials and Devices, Department of Physics,East China Normal University, Shanghai 200062, China
  • Received:2008-06-12 Revised:2008-10-08 Online:2009-07-25 Published:2009-07-25
  • Contact: XU Xuecheng

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Abstract: Through absorption of bromine vapor, the electrical conductivity of Polyphenylacetylene (PPA) enhanced by 1012 times. After pressing the bromine doped powder sample into pellet, we found that the conductivity of the samples increased with time. UVVis spectra, IR, and XPS spectra indicated that strong conjugation effect exists between PPA and bromine, and Charge Transfer Complex (CTC) is formed in PPA after doping; bromine doping increases the conjugation of PPA and improves its conductivity; the pressure can promote the doping effect of bromine on PPA.

Key words: polyphenelacetylene, doping, conjugation, charge transfer complex, pressure , bromine, polyphenelacetylene, doping, conjugation, charge transfer complex, pressure

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