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X-ray crystal structure of the lithium ion-encapsulated fullerene derivative © Yutaka Matsuo

Fullerene (C60), a cage molecule shaped like a soccer ball, has attracted much interest because of its potential application to next-generation solar cells, organic thin-film photovoltaic devices. Prof. Yutaka Matsuo and Dr. Hiroshi Okada in the University of Tokyo’s Graduate School of Science, succeeded for the first time in the chemical functionalization of a lithium ion-encapsulated fullerene, and developed a novel organic electronic material, lithium-ion-encapsulated PCBM (PCBM is a fullerene derivative, [6,6]-phenyl-C61-butyric acid methyl ester, a standard fullerene derivative used in organic solar cells). This new compound has a high electron-accepting property, and is expected to be utilized in research for high-performance organic solar cells.

(Japanese)

Paper

Yutaka Matsuo, Hiroshi Okada, Masashi Maruyama, Hiroyasu Sato, Hiromi Tobita, Yoshihiro Ono, Kenji Omote, Kazuhiko Kawachi, Yasuhiko Kasama,
“Covalently Chemical Modification of Lithium Ion-Encapsulated Fullerene: Synthesis and Characterization of [Li⁺@PCBM]PF₆^?”,
Organic Letters, Publication Date (Web): 2012/7/6, doi: 10.1021/ol301671n.

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