Discotic Organic Gelators in Ion Sensing, Metallogel Formation, and Bioinspired Catalysis

Langmuir : the ACS Journal of Surfaces and Colloids
Novina MalviyaSuman Mukhopadhyay

Abstract

Two organogelators G2 and G3 with a carboxamide group have been synthesized and characterized with different spectroscopic tools. Dimethylformamide or dimethyl sulfoxide solutions of both the compounds upon the addition of a minute quantity of water show the tendency to form gels. Supramolecular self-assembly for gel formation paves the way for aggregation-induced emission enhancement (AIEE) phenomena for both the gelator molecules. Introduction of metal ions in organogels strengthens the gel property without much affecting the fluorescence behavior. However, the introduction of Ag+, Fe2+, and Fe3+ ions in the G2 organogel separately results in total quenching of AIEE, making it possible to sense that particular cation in the gel state. The G3 organogel shows a similar behavior with the Fe2+ ion. Remarkably, other metallogels such as Ni(II)G2 and Co(II)G2 can sense sulfide ion and Cu(II)G2 can sense iodide ion by switching off the fluorescence even in multianalyte conditions. Furthermore, the copper-based metallogel Cu(II)G2 can be utilized as a catalyst and reaction medium for aerobic oxidation of catechol to quinone. To the best of our knowledge, this is the first attempt known so far to utilize a metallogel material for bioi...Continue Reading

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Citations

Oct 4, 2019·Chemical Communications : Chem Comm·Bappa MaitiSantanu Bhattacharya
Jul 18, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Ashanti Sallee, Kesete Ghebreyessus
Jan 27, 2019·Advanced Materials·Huiqiong WuJianmin Ma
Mar 2, 2021·Chemical Society Reviews·Santanu Panja, Dave J Adams
May 14, 2019·Inorganic Chemistry·Novina MalviyaSuman Mukhopadhyay
Nov 3, 2020·The Journal of Physical Chemistry. B·Joydip DeSantanu Kumar Pal
Nov 23, 2019·ACS Applied Materials & Interfaces·Novina MalviyaSuman Mukhopadhyay
Aug 26, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Alphy Sebastian, Edamana Prasad

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