Ratiometric fluorescence In3+ sensing via In3+-triggered automerization: Its applications to water samples, live cells and zebrafish

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A novel ratiometric fluorescence sensor NCS ((E)-N-(furan-2-ylmethyl)-2-(2 hydroxybenzylidene)hydrazine-lcarbothioamide) was synthesized by a combination of furfuryl isothiocyanate bearing hydrazine and salicylaldehyde. Sensor NCS exhibited a ratiometric fluorescent response toward In(3+)via thioamide tautomerization with blue-shifted emission from 484 to 444 nm in a near-perfect aqueous solution. NCS displayed a linear ratiometric relationship to micromolar concentrations (0-60 mu M) of In 311 and the detection limit was found to be 2.68 mu M. Moreover, sensor NCS exhibited an excellent selectivity for sensing In3+ in real samples as well as live cell and zebrafish. The sensing mechanism was demonstrated through UV-visible, fluorescent and H-1 NMR titrations, Job's plot, ESI-MS and theoretical calculations.
Publisher
ELSEVIER SCI LTD
Issue Date
2020-12
Language
English
Article Type
Article
Citation

DYES AND PIGMENTS, v.183, pp.108704

ISSN
0143-7208
DOI
10.1016/j.dyepig.2020.108704
URI
http://hdl.handle.net/10203/276838
Appears in Collection
CH-Journal Papers(저널논문)
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