A chemosensing ensemble for selective carbonate detection in water based on metal-ligand interactions.
Displacement of the loosely encapsulated fluorescent indicator coumarine 343 (F) from a dicopper(II) cryptate enables the selective fluorimetric detection of the HCO3 (-) ion (A) in water (see scheme, •○=Cu(2+) ). The fluorophore is quenched when encapsulated, but displays its full emission when released to the solution.
Dipartimento di Chimica Generale Università di Pavia, viale Taramelli 12 27100 Pavia, Italy, Fax: (+39) 0382-528544. fabbrizz@unipv.it.
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Taglietti
anions; cryptates; fluorescence spectroscopy; molecular recognition; sensors