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Communication

Chem. Commun., 2009, 7390 - 7392, DOI: 10.1039/b916476f

Sulfide-selective chemosignaling by a Cu2+ complex of dipicolylamine appended fluorescein

Myung Gil Choi, Sunyoung Cha, Haekyung Lee, Hye Lim Jeon and Suk-Kyu Chang

A new sulfide-selective chemosignaling system was devised based on a Cu2+ complex of fluorescein derivative having a dipicolylamine (DPA) binding site; the fluorescein–DPA conjugate 1, in the presence of Cu2+ ions, revealed a selective turn-on type signaling behavior toward sulfide ions with a detection limit of 420 nM in 100% aqueous solution.

Graphical abstract image for this article (ID: b916476f)