Journal
ANALYTICA CHIMICA ACTA
Volume 872, Issue -, Pages 63-69Publisher
ELSEVIER
DOI: 10.1016/j.aca.2015.02.051
Keywords
Cation sensing; Zn2+; Cu2+; Nanomolar detection; Molecular logic gate
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Funding
- UGC, New Delhi, India
- DST, New Delhi
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A fluorescent based receptor (4Z)-4-(4-diethylamino)-2-hydroxybenzylidene amino)-1,2dihydro-1,5-dimethyl-2-phenylpyrazol-3-one (receptor 3) was developed for the highly selective and sensitive detection of Cu2+ and Zn2+ in semi-aqueous system. The fluorescence of receptor 3 was enhanced and quenched, respectively, with the addition of Zn2+ and Cu2+ ions over other surveyed cations. The receptor formed host-guest complexes in 1:1 stoichiometry with the detection limit of 5 nM and 15 nM for Cu2+ and Zn2+ ions, respectively. Further, we have effectively utilized the two metal ions (Cu2+ and Zn2+) as chemical inputs for the manufacture of INHIBIT type logic gate at molecular level using the fluorescence responses of receptor 3 at 450 nm. (C) 2015 Elsevier B.V. All rights reserved.
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