title: Diastereoselective, synergistic dual-mode optical switch with integrated chirochromic helicene and photochromic bis-azobenzene moieties.
abstract: An unprecedented dual-mode optical switch by combining helicene and bis-azobenzene moieties in proximity allows for cooperative, highly diastereoselective chirochromic (92/8 to 3/97) and photochromic (>99/<1 to 19/81) switchings both in solution and in nematic LC with tunable pitches and handedness by permutation of four different metastable states.
authors.affiliation: Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan.
authors.forename: Wen-Ching
authors.initials: WC
authors.lastname: Chen
authors.forename: Yi-Wei
authors.initials: YW
authors.lastname: Lee
authors.forename: Chien-Tien
authors.initials: CT
authors.lastname: Chen