title: Fluorescence photoswitching based on a photochromic pKa change in an aqueous solution.
abstract: Reversible fluorescence photoswitching of RSA-AZO dyad 1 was clearly demonstrated in an acidic aqueous solution. The fluorescence photoswitching mechanism is based on the reversible ring opening/closing reactions of the RSA unit induced by a photochromic pK(a) change along with the photoisomerization of the AZO unit.
authors.affiliation: Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo 001-0020, Japan. tuyoshi@es.hokudai.ac.jp
authors.forename: Tuyoshi
authors.initials: T
authors.lastname: Fukaminato
authors.forename: Emi
authors.initials: E
authors.lastname: Tateyama
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Tamaoki
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D055668:Photochemical Processes; D012235:Rhodamines / Q000737:chemistry*; D012996:Solutions
chemical_list: D001391:Azo Compounds; D005456:Fluorescent Dyes; D012235:Rhodamines; D012996:Solutions; C009850:azobenzene