Specific conductivity dependence on diameter of submicro-sized polythiophene fibrils

Toshiki Koyama, Makoto Murata, Shoji Yamaguchi, Chihaya Adachi, Yoshio Taniguchi

Research output: Contribution to journalArticlepeer-review


Deposition mechanism and a diameter dependence of the conductivity of polythiophene derivative fibrils polymerized in pores of a membrane filter having submicrometer-sized pores aperture were discussed. Deposition process of the fibrils was able to be divided in the following three stages from SEM observation and polymerization current measurements. The first stage is the generation of deposition growth nucleus on the pore-inside wall and the filter surface, the second is growth of thickness of a thin-layer-deposit, and the third is the accumulation of a spherical deposit And, when the pore size became big, the second stage shortened remarkably, and thickness of the thin-layer-deposit became thinner, and the spherical deposition began earlier. From the simulated conductivity of the fibrils with each diameter, at the smaller pore aperture than a specific value, the thickness of the thin-layer-deposit having high-conductivity increases. When the pore aperture becomes smaller, the thin-layer-deposition is remarkably easy to occur.

Original languageEnglish
Pages (from-to)85-90
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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