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http://dx.doi.org/10.5012/bkcs.2010.31.02.298

Morphology of the Conducting Poly-N-vinylcarbazole-coated Silica Gel Nanocomposites  

Basavaraja, C. (Department of Chemistry and Institute of Functional Materials, Inje University)
Kim, Na-Ri (Department of Chemistry and Institute of Functional Materials, Inje University)
Jo, Eun-Ae (Department of Chemistry and Institute of Functional Materials, Inje University)
Revanasiddappa, M. (Department of Chemistry, PES School of Engineering)
Huh, Do-Sung (Department of Chemistry and Institute of Functional Materials, Inje University)
Publication Information
Bulletin of the Korean Chemical Society / v.31, no.2, 2010 , pp. 298-302 More about this Journal
Abstract
We report the effect of surface morphology on the conductivity of the poly-N-vinylcarbazole (PVK)/silica gel ($SiO_2$) nanocomposites as a function of $SiO_2$ weight percentage (%).The polymerization of PVK was initiated by a free-radical polymerization. The surface morphology of the prepared composite shows the incorporation of $SiO_2$ in the prepared PVK-$SiO_2$ (PS) nanocomposites. The conductivity increased from $9.2{\times}10^{-5}S\;cm^{-1}$ to $9.6{\times}10^{-4}S\;cm^{-1}$ with the increase in the percentage of silica gel from 5 to 30%. The nanocomposites show a percolation behavior having a threshold value between 15 and 20%.
Keywords
DC conductivity; Morphology; Percolation; Poly-N-vinylcarbazole; Silica;
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