In:
New Journal of Chemistry, Royal Society of Chemistry (RSC), Vol. 46, No. 33 ( 2022), p. 16161-16171
Abstract:
In this study, we synthesized two unsymmetrical and dipodal Schiff–Mannich combo ligands, namely benzoic acid (3-benzoimidazol-1-ylmethyl-2-hydroxy-5-methyl-benzylidene)-hydrazide (H2BBH) and the hydroxyl analogue 2-hydroxy-benzoic acid (3-benzoimidazol-1-ylmethyl-2-hydroxy-5-methyl-benzylidene)-hydrazide (H3BSH), for the selective detection of Zn 2+ in semi-aqueous media. Both the probes selectively depict a turn-on response to Zn 2+ as a result of the combined effect of chelation-induced enhanced fluorescence (CHEF) and photo-induced electron transfer (PET). Detailed experimental studies reveal that H2BBH and H3BSH can detect Zn 2+ in solutions with limit of detections of 27 nM and 46 nM, respectively. The structures of probe-Zn 2+ ensembles were proposed as [(HBBH) 2 Zn] and [(H 2 BSH) 2 Zn] by ESI-MS, FT-IR spectroscopy, 1 H NMR titration and DFT/TD-DFT methods. Moreover, both the probes were successfully employed in the detection of Zn 2+ in HuH-7 cells, seedlings of chickpea and mung beans, and paper strips.
Type of Medium:
Online Resource
ISSN:
1144-0546
,
1369-9261
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1472933-7
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