title: Directed synthesis of [2]catenanes incorporating naphthalenediimide and crown ethers by associated interactions of templates.
abstract: In this paper, we introduce a simple one-step method to synthesize [2]catenanes incorporating naphthalenediimide and crown ethers by associated interactions of templates. In this functional supermolecular system, the combined hydrogen-bond and π-donor/π-acceptor interactions led production of the [2]catenanes which exhibit reversible moving of the crown ether macrocycle on the big ring between two stations via de/reprotonation. This movement on the big ring can change the electron interaction, resulting in strong quenching of the emission of naphthalene diimide.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Wenlong
authors.initials: W
authors.lastname: Yang
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Li
authors.forename: Jianhong
authors.initials: J
authors.lastname: Zhang
authors.forename: Nan
authors.initials: N
authors.lastname: Chen
authors.forename: Songhua
authors.initials: S
authors.lastname: Chen
authors.forename: Huibiao
authors.initials: H
authors.lastname: Liu
authors.forename: Yuliang
authors.initials: Y
authors.lastname: Li