Signal Amplification by a Fluorescent Indicator of a pH-Driven Intramolecular Translocation of a Copper(II) Ion

Signal Amplification by a Fluorescent Indicator of a pH-Driven Intramolecular Translocation of a Copper(II) Ion

Shedding light on the environment: An auxillary light‐emitting fragment (coumarin‐343) binds to a CuII ion in the right‐hand compartment (B) of the ligand shown and its fluorescence is “switched off”. If the pH value is raised from 7 to ≥11 the metal moves to the left compartment (A), which imposes...

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Veröffentlicht in:Angewandte Chemie International Edition 2002-07, Vol.41 (14), p.2553-2556
Hauptverfasser: Amendola, Valeria, Fabbrizzi, Luigi, Mangano, Carlo, Miller, Hamish, Pallavicini, Piersandro, Perotti, Angelo, Taglietti, Angelo
Format: Artikel
Sprache:eng
Schlagworte:
copper
fluorescent probes
molecular devices
N ligands
transition metals
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Zusammenfassung:Shedding light on the environment: An auxillary light‐emitting fragment (coumarin‐343) binds to a CuII ion in the right‐hand compartment (B) of the ligand shown and its fluorescence is “switched off”. If the pH value is raised from 7 to ≥11 the metal moves to the left compartment (A), which imposes a square stereochemistry and forces dissociation of the indicator, thus “switching on” the fluorescence. The pH‐driven metal translocation is reversible and can be carried out for many cycles.
ISSN:1433-7851
1521-3773
DOI:10.1002/1521-3773(20020715)41:14<2553::AID-ANIE2553>3.0.CO;2-U