Fashionable Co-operative Sensing of Bivalent Zn2+ and Cd2+ in Attendance of OAc by Use of Simple Sensor: Exploration of Molecular Logic Gate and Docking …

B Das, S Pakrashy, GC Das, U Das, FA Alasmary… - Journal of …, 2022 - Springer
B Das, S Pakrashy, GC Das, U Das, FA Alasmary, SM Wabaidur, MA Islam, M Dolai
Journal of Fluorescence, 2022Springer
The Schiff-base probe H 2 VL [6, 6'-((1E, 1'E)-hydrazine-1, 2 diylidenebis (methanylylidene))
bis (2-methoxyphenol)] is synthesized and structurally characterized by single crystal X-ray
diffraction (SCXRD). H 2 VL is able to detect selectively acetate ion (OAc-) colorimetrically
over other anions with 1: 1 co-ordination. The detection limit is found to be 4.93 µM. On the
other hand, fluorescence intensity of the receptor is drastically enhanced with Zn2+ and
Cd2+ in the presence of acetate as counter anion. N, N-Dimethyl formamide (DMF) or …
Abstract
The Schiff-base probe H2VL [6,6'-((1E,1'E)-hydrazine-1,2 diylidenebis(methanylylidene))bis(2-methoxyphenol)] is synthesized and structurally characterized by single crystal X-ray diffraction (SCXRD). H2VL is able to detect selectively acetate ion (OAc-) colorimetrically over other anions with 1:1 co-ordination. The detection limit is found to be 4.93 µM. On the other hand, fluorescence intensity of the receptor is drastically enhanced with Zn2+ and Cd2+ in the presence of acetate as counter anion. N, N-Dimethyl formamide (DMF) or Dimethylsulphoxide (DMSO) and acetate (OAc-) was the best solvent and counter anion for Zn2+/Cd2+ -sensing compared with other solvents and anions, respectively. Detection limit for Zn2+ and Cd2+ are calculated to be 1.94 µM and 1.99 µM, respectively. The strong selective emissive behavior could be attributed to the CHEF (chelation-enhanced fluorescence) process. According to the changes in output emission intensity in DMSO in response to the set of ions (Zn2+, Cd2+ and OAc¯) as input variables, the function of 3-input multifunctional molecular logic circuits has been demonstrated. The molecular docking studies of H2VL with DNA and BSA are also performed to confirm its possible bioactivity.
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