title: A chromophoric switch based on pseudorotaxanes.
abstract: In a three-component system containing dibenzo-24-crown-8 (1), diamino-dibenzo-24-crown-8 (2), and 1,2-bis(4,4(')-dipyridyl)ethane (3(2+)), axle 3(2+) can shuttle between wheels 1 and 2 by acid-base control, accompanying color changes from yellow to red. This system could not only be taken as a chromophoric supramolecular switch, but also exhibit a function as INHIBIT logic gate.
authors.affiliation: Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China. yuliu@nankai.edu.cn
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.forename: Chun-Ju
authors.initials: CJ
authors.lastname: Li
authors.forename: Heng-Yi
authors.initials: HY
authors.lastname: Zhang
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Wang
authors.forename: Qian
authors.initials: Q
authors.lastname: Luo
authors.forename: Ge
authors.initials: G
authors.lastname: Wang