Relay detection of Zn2+ and S2- by a quinoline-based fluorescent chemosensor in aqueous media and zebrafish

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A new quinoline-based fluorescent chemosensor MDCQA was designed and synthesized for the relay sensing of Zn2+ and S2-. MDCQA showed turn-on fluorescence toward Zn2+, and the resulting complex was able to detect S2- among the competitive anions by turn-off fluorescence. Detecting limits (0.06 mu M and 2.33 mu M) for zinc ion and sulfide were remarkably below WHO guidelines (76.0 mu M for zinc ion and 14.7 mu M for sulfide). In addition, sensor MDCQA successfully operated for imaging Zn2+ in live zebrafish larvae and quantifying it in real water samples. The detecting properties and mechanisms of MDCQA toward zinc ion and sulfide were demonstrated by UV-vis and fluorescence spectroscopy, NMR titration, DFT calculations and ESI-Mass.
Publisher
ELSEVIER SCI LTD
Issue Date
2019-06
Language
English
Article Type
Article
Citation

DYES AND PIGMENTS, v.165, pp.264 - 272

ISSN
0143-7208
DOI
10.1016/j.dyepig.2019.02.027
URI
http://hdl.handle.net/10203/261677
Appears in Collection
CH-Journal Papers(저널논문)
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