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ENERGETIC RADIATION INDUCED SELF-ASSEMBLY OF FULLERENE CAGES,ATOM-BRIDGED FULLERENE DIMMERS AND IN situ scanning tunneling MICROSCOPIC STUDY

ENERGETIC RADIATION INDUCED SELF-ASSEMBLY OF FULLERENE CAGES...

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Asia Conference on Nanoscience and Nanotechnology Abstracts Book

作者： SOICHIRO YOSHIMOTO EISHI TSUTSUMI KINGO ITAYA Department of Applied Chemistry Graduate School of EngineeringTohoku UniversityAoba-yama 04Sendai 980-8579Japan Department of Applied Chemistry Graduate School of EngineeringTohoku UniversityAoba-yama 04Sendai 980-8579Japan Department of Applied Chemistry Graduate School of EngineeringTohoku UniversityAoba-yama 04Sendai 980-8579Japan

＜正＞ Following a suggestion of Osterodt and Vogtle et al, Dragoe et al. synthesized a functionalized new type of carbon nanomolecule Cm in a thermolysis reaction of C60CBr2 with C60 at a high temperature of 723 K. It is also the first and only one of the C2m-C-C2n, （m=n or m·n） type molecules that have been successfully synthesized so far. In an experiment using electronically neutral beam （neutron） to probe the uniqueness in properties of nanospaces, we found mat energetic-radiation induced self-assembly process of fullerene units was a simple and highly selective method for synthesis of C2m-X-C2n bridged molecules without formation of other byproducts. Tbe method is capable of synthesizing new C2m-X-C2n molecules by introducing X （different atoms） into the reaction system. The results revealed an intriguing new process: Energetic radiation created reactive sites for covalently-bonded bridges between fullerene molecules originally only weakly bound by van der Waals force. This observation may open a new subject and practicable approach for polymer sciences of *** the new method, C70-C-C70, C60-C-C70, C60-C-C60, and C70-O-C70 were prepared and characterized by in situ scanning tunneling microscopy. Their results together with those for direct fullerene dimers C2m=C2n （m=n or m·n）, and pristine cage unite before energetic radiation-induced self-assembly will be presented at the conference.

关键词： Bridged fullerene dimer in situ scanning tunneling microscopy.

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