title: Triggering a [2]Rotaxane Molecular Shuttle by a Photochemical Bond-Cleavage Strategy.
abstract: The successful triggering of ring-shuttling motion between two stations in a [2]rotaxane is demonstrated by employing a photochemical bond-cleavage strategy. A photolabile bulk barrier is covalently introduced into two identical stations of the thread to prevent dynamic shuttling of the macrocycle, resulting in a "gated" state. Irradiation of UV light (λ = 365 nm) results in the complete removal of the bulk barrier and the balanced shuttling motion of the macrocycle, indicating an "open" state of the rotaxane. In addition, the process from the "open" rotaxane to the "gated" rotaxane was executed by a chemical-rebonding method.
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
authors.forename: Chuan
authors.initials: C
authors.lastname: Gao
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
authors.forename: Zhou-Lin
authors.initials: ZL
authors.lastname: Luan
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
authors.forename: Shun
authors.initials: S
authors.lastname: Yang
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
authors.forename: Si-Jia
authors.initials: SJ
authors.lastname: Rao
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
authors.forename: Da-Hui
authors.identifier: 0000-0002-2039-3564
authors.initials: DH
authors.lastname: Qu
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
authors.forename: He
authors.identifier: 0000-0003-3547-7485
authors.initials: H
authors.lastname: Tian