A new coumarin-based fluorescence turn-on chemodosimeter for Cu2+ in water

A new hydroxynaphthyl benzothiazole derived fluorescent probe for highly selective and sensitive Cu 2+ detection

“…However, fluorescent probes exploiting HBT analogue such as 1-(benzo[d]thiazol-2-yl)naphthalen-2-ol (1), a well-known ESIPT active compound [49], as the signaling fluorophore is still rare [50,51]. Recently, some fluorescent probes based on Cu 2+ catalyzed hydrolysis of picolinoyl-ester have been documented [52,53]. For example, Han et al reported a HBT-based fluorescent probe CS1…”

A “turn-on” fluorescent and colorimetric sensor for selective detection of Cu2+ in aqueous media and living cells

“…Cu 2+ -promoted hydrolysis of picolinate was also demonstrated [28,41]. Herein, a novel fluorescent chemodosimeter 1 for Cu 2+ was easily synthesized with dicyanoisophorone-based derivative as a fluorophore and 2-picolinate as a metal chelating moiety.…”

“…Recently, there has been an upsurge of interest in chemodosimeter based chemical sensing through M a n u s c r i p t 2 a specific irreversible chemical reaction between dosimetric molecules and the target species, leading to the release of a fluorescent or colored product [27][28][29]. Reaction-based chemodosimeters have been developed to achieve emission enhancement by reacting with Cu 2+ to yield fluorescent products which have little affinity to Cu 2+ , thus avoiding the challenge of paramagnetic nature of Cu 2+ .…”

Novel Coumarin Substituted Water Soluble Cyclophosphazenes as “Turn-Off” Type Fluorescence Chemosensors for Detection of Fe3+ ions in Aqueous Media

“…Coumarin derivatives have also been used as fluorescent probes of pH, for detection of nitric oxide, nitroxide and hydrogen peroxide [35][36][37]. The development of fluorescent probes for detecting transition metal ions has attracted great interests of researchers because of the advantages of high selectivity and sensitivity, non-destructive analysis and simple instrumentation [29].…”

“…The structure of benzopyrone group in the coumarin derivatives has many advantages including high fluorescence quantum yield, large Stokes shift, excellent light stability and low toxicity [26][27][28]. Moreover, coumarins play important roles as food constituents, antioxidants, stabilizers, immunomodulatory substances, lasers and anticancer agents [29][30][31][32][33][34]. Coumarin derivatives have also been used as fluorescent probes of pH, for detection of nitric oxide, nitroxide and hydrogen peroxide [35][36][37].…”