Monitoring the redox-driven assembly/disassembly of a dicopper(I) helicate with an auxiliary fluorescent probe

Valeria Amendola; Luigi Fabbrizzi; Piersandro Pallavicini; Elisabetta Sartirana; Angelo Taglietti

doi:10.1021/ic026061a

Monitoring the redox-driven assembly/disassembly of a dicopper(I) helicate with an auxiliary fluorescent probe

Inorg Chem. 2003 Mar 10;42(5):1632-6. doi: 10.1021/ic026061a.

Authors

Valeria Amendola¹, Luigi Fabbrizzi, Piersandro Pallavicini, Elisabetta Sartirana, Angelo Taglietti

Affiliation

¹ Università di Pavia, Dipartimento di Chimica Generale, via Taramelli 12, Italy.

PMID: 12611532
DOI: 10.1021/ic026061a

Abstract

The assembly/disassembly of a dicopper(I) helicate with a bis-bidentate imine-quinoline ligand is driven by the Cu(II)/Cu(I) redox change and is signaled by a fluorescent probe bearing a -COO(-) group (coumarine 343). The probe coordinates the Cu(II) center of the monomeric complex, which quenches its emission (fluorescence off), and is released upon reduction and formation of the Cu(I) helicate (fluorescence on).