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Triazole-Amide isosteric pyridine-based supramolecular gelators in metal ion and biothiol sensing with excellent performance in adsorption of heavy metal ions and picric acid from water

Abstract

Pyridine-based small molecular gelators 1-4 having triazole-amide isosteric relationship have been synthesized. Compounds 1-3 exhibit excellent gelation from DMSO-H2O (1:2, v/v). On the other hand, compound 4 leads to forming gel in presence of Ag+ ions in DMSO:H2O (1:2, v/v). Change in triazole to isosteric amide has marked effect on gelling abilities, minimum gelation concentrations (mgc), thermal stability, mechanical properties, metal ion responsive character and adsorption properties of the structures as established by various techniques. All the gels are successfully applied as sophisticated sensing kits in selective detection of Cu2+ and Ag+ ions and thiol containing amino acids. The triazole-based gelators 1 and 3 show adsorption of heavy metal ions from water with greater efficiency than the isosteric amide-based gelators. The metallogel 4-Ag+ finds application in efficient removal of picric acid (a nitro explosive) from water.

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Publication details

The article was received on 28 Aug 2018, accepted on 24 Nov 2018 and first published on 26 Nov 2018


Article type: Paper
DOI: 10.1039/C8NJ04380A
Citation: New J. Chem., 2018, Accepted Manuscript
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    Triazole-Amide isosteric pyridine-based supramolecular gelators in metal ion and biothiol sensing with excellent performance in adsorption of heavy metal ions and picric acid from water

    A. Panja and K. Ghosh, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ04380A

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