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Chem. Commun., 2009, 7384 - 7386, DOI: 10.1039/b914821c

A reversible fluorescent Hg2+/K+ switch that works as keypad lock in the presence of F- ion

Manoj Kumar, Rajesh Kumar and Vandana Bhalla

A thiacalix[4]arene based fluorescent chemosensor 3 of 1,3-alternate conformation bearing two dansyl groups and a crown-5 ring behaves as an On–Off reversible switch for two chemical inputs Hg2+ and K+ ions and mimics a molecular level keypad lock in the presence of F- ions.

Graphical abstract image for this article (ID: b914821c)