Quan Hu, Yiqun Tan, Min Liu
Aug 1, 2014
Citations
0
Influential Citations
26
Citations
Journal
Dyes and Pigments
Abstract
Abstract A new fluorescent probe, 3-((4-([2,2′:6′,2″-terpyridin]-4′-yl)phenyl)ethynyl)-7-methoxy-2H-chromen-2-one (ZC-F7) composed of coumarin as the fluorophore and terpyridine as the receptor is designed and synthesized. Based on the intramolecular charge transfer (ICT) effect, the probe exhibits significant variation on emission wavelengths with shifts more than 100 nm after combined with Zn 2+ , in accordance with the conversion of emission colors from blue to green. Good selectivity and sensitivity of this probe towards Zn 2+ can be found even on the ppb level in aqueous solution. The Job's plot test suggests a 1:1 stoichiometry between ZC-F7 and Zn 2+ . The application of the fluorescence probe in bio-imaging is also demonstrated, proving its potential usage in fields such as environment protection, water treatment and safety inspection.