title: Control of self-aggregation of fullerenes by connection with calix[4]arene: solvent- and guest-effects to particle size.
abstract: A new molecular design of fullerene derivatives exhibiting trigger-responsive self-aggregation in organic solvents has been established. Calix[4]arene was covalently connected with fullerene in order to apply host-guest interaction to the aggregation control. The self-assembly behaviour was studied in organic solvents by UV-vis absorption spectroscopy, dynamic light scattering and transmission electron microscopy. Results show that the bisfullerene formed self-aggregations with a low polydispersity index due to the fullerenes' tendency to aggregate in polar organic solvents. Furthermore, the aggregate sizes can be changed readily by solvent composition and the addition of guest cations. Especially, disaggregation of the bisfullerene was induced by addition of LiClO4 or NaClO4.
authors.affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology, Takayama, Ikoma, Nara, 630-0192, Japan. aikeda@ms.naist.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Ikeda
authors.forename: Taishin
authors.initials: T
authors.lastname: Irisa
authors.forename: Tomoe
authors.initials: T
authors.lastname: Hamano
authors.forename: Toyokazu
authors.initials: T
authors.lastname: Kitahashi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Sasaki
authors.forename: Mineo
authors.initials: M
authors.lastname: Hashizume
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Kikuchi
authors.forename: Toshifumi
authors.initials: T
authors.lastname: Konishi
authors.forename: Seiji
authors.initials: S
authors.lastname: Shinkai