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Electrical conductivity of homopolymer and copolymers of N-vinylcarbazole

  • 4th Brazilian MRS Meeting
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Abstract

Poly(N-vinylcarbazole) (PVCz) is well known as an electroactive material due to its good photoconductivity, charge-transfer complexes, photoluminescence and electroluminescence properties. The block copolymers of N-vinylcarbazole were prepared and the effects of the relative composition, molar masses, architecture and doping on its electrical behavior were investigated. Controlled free radical polymerization has been carried out using nitroxide-mediated process in order to prepare a series of block copolymers of N-vinylcarbazole. 2,2,6,6-Tetramethyl-1-piperidinyloxy radical (TEMPO) was used to end-cap “living” homopolymer of p-bromostyrene, which was further used as a macroinitiator to polymerize N-vinylcarbazole and styrene. The copolymers have been doped at room temperature with LiClO4 and the electrical conductivities were measured by two-probe method, which have shown to depend on copolymer’s relative composition and molar masses.

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Acknowledgement

The authors thank FAPESP (99/01783-0, 00/12061-4 and 01/12849-3) for financial support.

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Authors and Affiliations

  1. Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica, Universidade de São Paulo, Av. Prof. Mello Moraes 2463, 05508-900, São Paulo, SP, Brazil

    Shirley Possidonio, Laura O. Peres & Shu Hui Wang

  2. Departamento de Engenharia de Sistemas Eletrônicos, Escola Politécnica, Universidade de São Paulo, São Paulo, SP, Brazil

    Roberto Koji Onmori

Authors
  1. Shirley Possidonio
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  2. Roberto Koji Onmori
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  3. Laura O. Peres
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  4. Shu Hui Wang
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Correspondence to Shu Hui Wang.

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Possidonio, S., Onmori, R.K., Peres, L.O. et al. Electrical conductivity of homopolymer and copolymers of N-vinylcarbazole. J Mater Sci 42, 2329–2333 (2007). https://doi.org/10.1007/s10853-006-0375-2

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  • DOI: https://doi.org/10.1007/s10853-006-0375-2

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