A Chalcone‐Based Highly Selective and Sensitive Chromofluorogenic Probe for Trivalent Metal Cations

Abstract

ElsevierCliment Olmedo, MJ.; Corma Canós, A.; Hernández, JC.; Hungría, AB.; Iborra Chornet, S.; Martínez Silvestre, S. (2012). Biomass into chemicals: One-pot two-and three-step synthesis of quinoxalines from biomass-derived glycols and 1,2-dinitrobenzene derivatives using supported gold nanoparticles as catalysts. AbstractAn efficient and selective one-pot two steps, method for the synthesis of quinoxalines by oxidative coupling of vicinal diols with 1,2-phenylenediamine derivatives, has been developed by using gold nanoparticles supported on nanoparticulated ceria (Au/CeO 2 ) or hydrotalcite (Au/HT) as catalysts and air as oxidant, in absence of any homogeneous base. Reaction kinetics shows that the reaction controlling step is the oxidation of the diol to α-hydroxycarbonyl compound.Furthermore, a one-pot three steps synthesis of 2-methylquinoxaline starting from 1,2-dinitrobenzene and 1,2-propanediol has been successfully carried out with 98% conversion and 83% global yield to the final product.

Sequential Multiple-Target Sensor: In3+, Fe2+, and Fe3+ Discrimination by an Anthracene-Based Probe

“…For Fe 3+ detection, numerous probes have been recently reported. − For instance, Lee et al have reported a selective rhodamine-based sensor showing a sensitive and selective detection of intracellular Fe 3+ ions in hepatocytes. , To the best of our knowledge, Kim and co-workers were the first in synthesizing an indium sensor, based on pyrene moieties . Due to the high interest of monitoring In 3+ concentrations in biological environments, the number of optical probes for In 3+ detection is also increasing. − Nevertheless, the design of new chemosensors able to quantify the cellular concentrations of iron and indium ions is still needed for the fundamental understanding of indium toxicity as well as for the diagnosis of associated diseases.…”

Selective chromo-fluorogenic detection of trivalent cations in aqueous environments using a dehydration reaction

“…In particular, there are relatively few probes able to detect simultaneously several trivalent cations [9][10][11][12][13][14][15][16][17][18][19] and we have found in the literature only one probe that recognizes Al 3+ , Fe 3+ , Cr 3+ , As 3+ , In 3+ and Ga 3+ at the same time. 20 Moreover, most probes for trivalent cations display sensing features in organic solvents and it is rare to find probes for these cations in pure water. 21 Taking into account these facts, and our experience in the synthesis of molecular and material-based sensors for the optical recognition of chemical species, 22 we report herein the synthesis, characterisation and chromo-fluorogenic behavior toward cations of the chalconebased probe 3.…”

“…Exposure can also occur through skin contact with soil or water containing arsenic. 20 Moreover, most probes for trivalent cations display sensing features in organic solvents and it is rare to find probes for these cations in pure water. 21 Taking into account these facts, and our experience in the synthesis of molecular and material-based sensors for the optical recognition of chemical species, 22 we report herein the synthesis, characterisation and chromo-fluorogenic behavior toward cations of the chalconebased probe 3.…”

Idiosyncatic recognition of Zn2+ and CN− using pyrazolyl-hydroxy-coumarin scaffold and live cell imaging: depiction of luminescent Zn(ii)-metallocryptand

“…The emission intensity of [H 2 L−Zn 2+ ] in the presence of Fe 3+ , Al 3+ , and Cr 3+ exhibits slight interferences. This may be due to the weak secondary interaction among the molecular assembly of [H 2 L−Zn 2+ ] and M 3+ (Fe 3+ , Al 3+ , Cr 3+ ), 71,72 while for other cations, the emission is almost unaffected and interestingly, the probe could detect Zn 2+ even in the presence of Cd 2+ and Hg 2+ (Fig. S10†).…”