2-((E)-(2-aminophenylimino)methyl)-6-isopropyl-3-methylphenol based fluorescent receptor for dual Ni2+ and Cu2+ recognition: Nanomolar detection

A facile synthesis of a novel 4-hydroxyl-3-azo coumarin based colorimetric probes for detecting Hg2+ and a fluorescence turn-off response of 3CBD to Fe3+ in aqueous environment

“…The mode of cation detection is largely based on the design of the molecular framework, normally via several interaction mechanisms, 8,42–45 which in many cases characterized by functional groups 46–50 and coordination interaction. 51–54…”

“…The mode of cation detection is largely based on the design of the molecular framework, normally via several interaction mechanisms, 8,[42][43][44][45] which in many cases characterized by functional groups [46][47][48][49][50] and coordination interaction. [51][52][53][54] Commonly used binding units in colorimetric chemosensors include bipyridines, Schiff bases, guanidine, rhodamine dyes, and azo dyes. [55][56][57] Among these, azo dyes have gained prominence due to their straightforward synthesis, distinctive photophysical properties, and strong affinity for various heavy metal ions.…”

An ESIPT-ICT steered naphthylthioic-based ionic probe with dual emissive channels exhibiting CHEF and CHEQ effects

“…18 Generally, the accumulation of any heavy metal concentrations above their thresholds, in physiological systems, has severe damages to the body. 19–25…”

“…18 Generally, the accumulation of any heavy metal concentrations above their thresholds, in physiological systems, has severe damages to the body. [19][20][21][22][23][24][25] Exclusively, Al 3+ is the third most abundant metal in the periodic table, highly versatile with distinctively excellent chemistry. It has the ability to form amphoteric compounds, especially in its oxidic forms, exhibiting both basicity and acidity properties, depending on the chemical environment.…”

A new Schiff base as a turn‐off fluorescent sensor for Cu2+ and its photophysical properties

“…The paramagnetic nature of the copper ion resulted in instantaneous fluorescence quenching of the sensor upon binding with copper ions, which allowed the selective detection of copper ions. Absorbance change, colour dissimilarity or fluorescence intensity variation to discriminate the target analyte have been suitable methods for the design of highly sensitive and selective chemosensors for copper ions, but such sensors design has required complicated synthesis procedures.…”