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Abstract
Organic-inorganic composites composed of electrically conducting poly(3,4-ethylenedioxythiophene)/multi-walled carbon nanotube (PEDOT/MWNT) were prepared by in-situ oxidative polymerization of ethylenedioxythiophene (EDOT) in the presence of MWNTs in supercritical carbon dioxide. Prior to the polymerization, MWNTs were surface modified with 3-(trimethoxysilyl) propyl methacrylate in order to improve the dispersibility in CO2. This approach provides a facile way to develop solvent free composites with nanostructures and uniformity. The resulting composites were analyzed by FT-IR, transmission electron microscopy, field emission scanning electron microscopy, thermogravimetric analysis, X-ray diffraction and UV-visible spectroscopy. In addition, the effect of the ratio of the MWNT to PEDOT on the polymerization was investigated.
Acknowledgments
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) (No. R01-2008-000-21056-0) and the second stage of BK21 Program.