title: Linear oligomers composed of a photochromically contractible and extendable Janus [2]rotaxane.
abstract: The synthesis and characterization of N,N'-p-xylylene-linked oligo-Janus [2]rotaxanes based on a permethylated alpha-cyclodextrin and their contractible and extendable nature coupled with photochromism are described.
authors.affiliation: Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.
authors.forename: Susumu
authors.initials: S
authors.lastname: Tsuda
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Aso
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kaneda