title: Proton-controllable fluorescent switch based on interconversion of polynuclear and dinuclear copper(II) complexes.
abstract: The first reversible interconversion process between a one-strand polymeric copper(II) complex {[Cu2(L1)2(ClO4)2](ClO4)2}n (1) and a dicopper(II) helicate [Cu2(L1-2H)2] (2), proceeding via a deprotonation-protonation process, can transduce fluorescence and function as a fluorescent switch simply by introducing a one fiftieth equivalent of coumarine 343 anion, a fluorophore.
authors.affiliation: Department of Chemistry, National Taiwan Normal University, Taipei, 116, Taiwan, R.O.C.
authors.forename: Hsueh-Ju
authors.initials: HJ
authors.lastname: Liu
authors.forename: Yu-Hsin
authors.initials: YH
authors.lastname: Hung
authors.forename: Chang-Chuan
authors.initials: CC
authors.lastname: Chou
authors.forename: Chan-Cheng
authors.initials: CC
authors.lastname: Su