Jump to main content
Jump to site search

Issue 2, 2018
Previous Article Next Article

Pyridine coupled mono and bisbenzimidazoles as supramolecular gelators: selective metal ion sensing and ionic conductivity

Author affiliations

Abstract

Pyridine coupled mono and bisbenzimidazoles 1–6 are synthesized and their gelation properties are examined in various polar as well as nonpolar solvents. Among the structures, compounds 1 and 2 form instant gels from DMSO/H2O and MeOH/H2O solvents. The gel states of both 1 and 2 are responsive to Ag+ and Cu2+ ions whereas the gel to sol transition of 2 in DMSO–H2O is additionally caused by Hg2+ ions. On the other hand, compounds 3 and 4 produce gels only in the presence of Ag+ ions under similar conditions and validate their visual readout. In relation to this, the nongelation behavior of p-isomers 5 and 6 (structural isomers) under identical conditions emphasizes the positional role of the pyridyl ring nitrogen with respect to the imidazole ring. Furthermore, metallogels of 3 and 4 exhibit thermally activated ionic conductivity due to movement of Ag+ ions within the gel network.

Graphical abstract: Pyridine coupled mono and bisbenzimidazoles as supramolecular gelators: selective metal ion sensing and ionic conductivity

Back to tab navigation

Supplementary files

Publication details

The article was received on 03 Nov 2017, accepted on 22 Dec 2017 and first published on 26 Dec 2017


Article type: Research Article
DOI: 10.1039/C7QM00505A
Citation: Mater. Chem. Front., 2018,2, 385-395
  •   Request permissions

    Pyridine coupled mono and bisbenzimidazoles as supramolecular gelators: selective metal ion sensing and ionic conductivity

    S. Panja, S. Bhattacharya and K. Ghosh, Mater. Chem. Front., 2018, 2, 385
    DOI: 10.1039/C7QM00505A

Search articles by author

Spotlight

Advertisements