To design a new metal sensory system, calix[4]arene bearing pyrene (as a fluorophore) and nitrobenzene (as a quencher) near the ionophoric cavity is synthesized: in response to the metal-binding event the fluorescence intensity is dramatically enhanced.
I. Aoki, T. Sakaki and S. Shinkai, J. Chem. Soc., Chem. Commun., 1992, 730 DOI: 10.1039/C39920000730
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