金属ナノ粒子-ポリチオフェンハイブリッドナノチューブの創製と機能化：ハイブリッドナノインターフェイス

抄録

In recent years, nanostructured materials such as carbon nanotubes, polymer nanotubes, metal nanotubes, and metal nanoparticles have received a great deal of attention due to their unique physical and chemical properties as well as their enormous potential applications such as catalysts, nanoelectronic devices, magnetic devices, sensors, and biomaterial separation membranes. Although several methods have been developed to functionalize carbon nanotubes with inorganic and organic materials, related works on π-conjugated polymer nanotubes such as polythiophene and metal nanotubes have been reported in only a few cases. In particular, the combination of conducting polymers and metal nanoparticles provides an exciting system to investigate with the possibility of designing nanotube functionality. However, the preparation of nanotube composites consisting of metal nanoparticles and polythiophene as a constituent of nanotubes by electropolymerization of thiophene-modified metal nanoparticles has never been reported. We have developed a new method for the fabrication of metal nanoparticle/polythiophene nanotube composites, i.e., the template-based electrochemical oxidative polymerization of terthiophene-linked-thiol and -phosphine-stabilized gold and palladium nanoparticles in a nanoporous alumina membrane as a template gave the hybrid nanotubes of polythiophene and the metal nanoparticles without aggregation of the metal nanoparticles. This article describes the synthesis and functionalization of metal nanoparticles and polythiophene, and their hybrid nanotubes.