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http://dx.doi.org/10.5012/bkcs.2006.27.11.1815

Conducting Properties of Polypyrrole Coated Imogolite  

Lee, Yun-Ha (Department of Chemistry, Hanyang University)
Kim, Bum-Joong (Department of Chemistry, Hanyang University)
Yi, Whi-kun (Department of Chemistry, Hanyang University)
Takahara, Atsushi (Institute for Materials Chemistry and Engineering, Kyushu University)
Sohn, Dae-Won (Department of Chemistry, Hanyang University)
Publication Information
Abstract
Imogolite which has chemical composition, $(HO)_3Al_2O_3SiOH$, was synthesized with orthosilicate acid and aluminium chloride at low pH solution. It has extremely large aspect ratio with an external diameter of 2nm and the length of a few micrometers. The high aspect ratio of the imogolite could make the material as the filler for the high strength fiber and as the wire for the electronic applications. Here, Imogolite that derives considerable microporosity from a nanometer-sized tubular structure has been modified with a conducting polymer, polypyrrole. Its bonding and wiring structure were confirmed by IR and TEM. The measured conductivity after modification with polypyrrole increased with polypyrrole thickness at various voltage conditions.
Keywords
Imogolite; Polypyrrole; Conducting polymer; Nano tube;
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