title: [Study on spectral properties of 5-(dimethylamino)-N-(4-(2-(2-hydroxybenzylidene) hydrazinecarbonyl) phenyl) naphthalene-1-sulfonamide for selective detection of Zn2+].
abstract: A novel dansyl sulfonamide-based fluorescence probe DH1 [(E)-5-(dimethylamino)-N-(4-(2-(quinolin-2-ylmethylene) hydrazinecarbonyl) phenyl)aphthalene-1-sulfonamide] was synthesized for detection of Zn2+. Spectral properties of DH1 such as UV-Vis, fluorescence spectra and ESI-MS for recognition of Zn2+ were studied. Spectrophotometric titration and ESI-MS spectra indicate the formation of a 1:1 complex of Zn2+ with DH1. The results show that DH1 has high quantum yield of 0.53 and low the detection limit of 1.0 x 10(-7) mol X L(-1) for detection of Zn2+ in acetonitrile/water (9:1, volume ratio). Moreover, no fluorescence intensity changes were observed in the presence of other common metal ions such as K+, Li+ , Na+, Mg2+, Ca2+, Cr3+, Mn2+, Ni2+, Pb2+, Cu2+, Cd2+, Co2+, Fe2+ and Hg2+, indicating that DH1 has excellent selectivity and high sensitivity for detection of Zn2+.
authors.affiliation: School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China. wuhongmei0331@126.com
authors.forename: Hong-Mei
authors.initials: HM
authors.lastname: Wu
authors.forename: Yu
authors.initials: Y
authors.lastname: Guo
authors.forename: Peng
authors.initials: P
authors.lastname: Zhou