A multi-analyte responsive chemosensor vanilinyl Schiff base: fluorogenic sensing of Zn(ii), Cd(ii) and I⁻

Abstract

A single fluorescence probe recognizes multiple ions and grabs the great attention of scientists.

A Phenyl Thioether‐Based Probe: Zn2+ Ion Sensor, Structure Determination and Live Cell Imaging†

“…The average lifetime of Zn‐SAP (3.67 ns) complex is increased by 60 times of free probe (t av , 0.06 ns) (Figure ). The metal‐ligand orbital mixing of delocalized 3d π orbital of Zn 2+ with π* of H 2 ‐SAP may be the reason for the longer lifetime of the excited state …”

A Sensitive Microextraction Method Using Effervescence Tablets to Disperse Fe3O4 Nanoparticles for Cadmium Determination in Lake Water Samples

“…As consequence, its contamination in food and environment is drastically increasing. [5] Exposure to cadmium may occur via inhalation or ingestion and it is estimated that 98 % of cadmium was ingested from terrestrial foods while 2.0 % from water and aquatic foods. [6] Cadmium is categorized by IARC as Group 1 -carcinogenic to humans-due to the reported influences such as DNA-repairing inhibition, epigenetic alterations, chromosomal damage, and genomic instability.…”

“…Despite these properties, the demand and consumption of this metal in agricultural and industrial areas is considerable and increases day by day. As consequence, its contamination in food and environment is drastically increasing [5] . Exposure to cadmium may occur via inhalation or ingestion and it is estimated that 98 % of cadmium was ingested from terrestrial foods while 2.0 % from water and aquatic foods [6] .…”

A Vanillinyl‐Hydrazone Schiff Base: Recognition of Mg2+, Zn2+, Cd2+ and I− by Turn‐On Fluorescence Method

“…al reported methoxy substitution in difluoroboron benzoylacetonate complexes exhibiting color‐tunable phosphorescence and our research group also previously repoted the effect of ‐OMe substituent on salicylaldehyde based Schiff base to influence the Zn 2+ ion sensitivity. Again our research group already reported a Schiff base molecule which exhibited fluorescence sensitivity enhancement towards Zn 2+ , Cd 2+ and I − . In the present work, only the position of methoxy (‐OMe) group is differ from the previously reported molecule and a new vanillinyl‐hydrazone Schiff base, 2,6‐Bis‐[(2‐hydroxy‐3‐methoxy‐benzylidene)‐hydrazonomethyl]‐4‐methyl‐phenol (PHV) is synthesized which shows the minor change tunes the fluorescence sensitivity from Zn 2+ , Cd 2+ and I − to Zn 2+ , Cd 2+ , Mg 2+ and I − .…”

“…Again our research group already reported a Schiff base molecule which exhibited fluorescence sensitivity enhancement towards Zn 2+ , Cd 2+ and I − . In the present work, only the position of methoxy (‐OMe) group is differ from the previously reported molecule and a new vanillinyl‐hydrazone Schiff base, 2,6‐Bis‐[(2‐hydroxy‐3‐methoxy‐benzylidene)‐hydrazonomethyl]‐4‐methyl‐phenol (PHV) is synthesized which shows the minor change tunes the fluorescence sensitivity from Zn 2+ , Cd 2+ and I − to Zn 2+ , Cd 2+ , Mg 2+ and I − . On the other hand, S. Nandi et.…”