title: Thiophene donor-acceptor [2]rotaxanes.
abstract: A series of the thiophene donor-acceptor [2]rotaxanes have been synthesized based on the inclusion complexes of cyclobis(paraquat- p-phenylene) (CBPQT4+) with thiophene, bithiophene, and terthiophene. The maximum wavelength of the charge-transfer band strongly depends on the number of thiophene units, while the association constant does not. These donor-acceptor pairs will be fascinating constituents for optoelectronic and electromechanical materials.
authors.affiliation: Functional Modules Group, Organic Nanomaterials Center, National Institute for Materials Science, Tsukuba, Japan. ikeda.taichi@nims.go.jp
authors.forename: Taichi
authors.initials: T
authors.lastname: Ikeda
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Higuchi
authors.forename: Akira
authors.initials: A
authors.lastname: Sato
authors.forename: Dirk G
authors.initials: DG
authors.lastname: Kurth