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Diaminomalenonitrile-decorated cholesterol-based supramolecular gelator: aggregation, multiple analyte (hydrazine, Hg2+ and Cu2+) detection and dye adsorption

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Abstract

A low molecular weight gelator (LMWG) containing a diaminomalenonitrile functional group 1 has been designed and synthesized. The compound forms supramolecular gels from DMF–H2O and 1,2-dichlorobenzene. The morphology of the gels reveals fibrous networks. The rheological study demonstrates that the DMF–H2O gel is stable and robust than the gel obtained from 1,2-dichlorobenzene, which is due to the existence of strong intermolecular forces among the gelators in DMF–H2O. The analysis of tan δ values from the frequency sweep (tan δ = G′′av/Gav) indicates that the DMF–H2O gel exhibits higher mechanical strength (lower tan δ) than the 1,2-dichlorobenzene gel. The DMF–H2O gel has been explored for sensing and dye adsorption. The gel is established to be selective for visual recognition of hydrazine, Hg2+ and Cu2+ ions. Moreover, the gel exhibits excellent efficacy towards rapid and selective adsorption of cationic dyes from water (<1 min).

Graphical abstract: Diaminomalenonitrile-decorated cholesterol-based supramolecular gelator: aggregation, multiple analyte (hydrazine, Hg2+ and Cu2+) detection and dye adsorption

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Publication details

The article was received on 16 May 2018, accepted on 02 Jul 2018 and first published on 03 Jul 2018


Article type: Paper
DOI: 10.1039/C8NJ02426J
Citation: New J. Chem., 2018, Advance Article
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    Diaminomalenonitrile-decorated cholesterol-based supramolecular gelator: aggregation, multiple analyte (hydrazine, Hg2+ and Cu2+) detection and dye adsorption

    A. Panja and K. Ghosh, New J. Chem., 2018, Advance Article , DOI: 10.1039/C8NJ02426J

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