title: A macrocycle/molecular-clip complex that functions as a quadruply controllable molecular switch.
abstract: Herein, we report the synthesis of a molecular clip with TTF side-walls and its binding behavior towards electron-deficient guests, namely the formation of macrocycle/molecular-clip supramolecular complexes in solution. Four different sets of external stimuli--the K(+)/[2.2.2]cryptand, NH(4) (+)/Et(3)N and (p-BrPh)(3)NSbCl(6)/Zn pairs, and heating/cooling cycles-control the movement of this molecular switch between its threaded and unthreaded states and provide color changes that are observable by the naked eye. This macrocycle/molecular-clip complex system can be considered not only as a quadruple-use molecular switch, but can also be operated by three of these stimuli as a three-input molecular NOR-functioning logic gate that may be monitored by UV-visible spectroscopy.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, ROC.
authors.forename: Pinn-Tsong
authors.initials: PT
authors.lastname: Chiang
authors.forename: Pin-Nan
authors.initials: PN
authors.lastname: Cheng
authors.forename: Chi-Feng
authors.initials: CF
authors.lastname: Lin
authors.forename: Yi-Hung
authors.initials: YH
authors.lastname: Liu
authors.forename: Chien-Chen
authors.initials: CC
authors.lastname: Lai
authors.forename: Shie-Ming
authors.initials: SM
authors.lastname: Peng
authors.forename: Sheng-Hsien
authors.initials: SH
authors.lastname: Chiu
mesh_terms: D043844:Crown Ethers / Q000737:chemistry*; D008956:Models, Chemical; D008968:Molecular Conformation; D013056:Spectrophotometry, Ultraviolet
chemical_list: D043844:Crown Ethers