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Received January 4, 2023
Revised March 3, 2023
Accepted March 31, 2023
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A novel fluorescent turn-on probe based on thiosemicarbazide-naphthalene for selectively detecting Zn2+
Department of Fine Chemistry, and New and Renewable Energy Convergence, Seoul National University of Science and Technology, Seoul 01811, Korea
chealkim@snut.ac.kr
Korean Journal of Chemical Engineering, August 2023, 40(8), 2010-2016(7), 10.1007/s11814-023-1464-5
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Abstract
A new thiosemicarbazide-naphthalene-based fluorescent chemosensor FNC ((2-(furan-2-carbonyl)-N-
(naphthalen-1-yl)hydrazine-1-carbothioamide)) for Zn2+ was synthesized and identified. FNC was applied to selectively detect Zn2+ with fluorescent turn-on response. The detection limit was determined to be 1.93 M, which is much
below the WHO standard (76.5 M). The detecting mechanism of FNC to Zn2+ was revealed to bind FNC to Zn2+ in
the proportion of 1 : 1 by Job plot, ESI-mass and 1
H NMR titrations. DFT and TD-DFT calculations were performed
for FNC and FNC-Zn2+, which provide insight into structural, electronic and photophysical properties.
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