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

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

doi:10.1039/B916476F

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Chemical Communications

Issue 47, 2009

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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

Chem. Commun., 2009, 7390-7392

DOI: 10.1039/B916476F
Received 14 Aug 2009, Accepted 15 Oct 2009
First published on the web 30 Oct 2009

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Abstract
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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.

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General experimental details with additional chemosignalingbehaviors of 1–Cu²⁺ system and ¹H and ¹³C NMR spectra
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Myung Gil Choi
Sunyoung Cha
Haekyung Lee
Hye Lim Jeon
Suk-Kyu Chang

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Chemical Communications

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

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