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A Versatile Fluorescent System for Sensing of H+, Transition Metals, and Aromatic Carboxylates (1999)

Fabbrizzi, Luigi ; Licchelli, Maurizio ; Parodi, Luisa ; [et al.]

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 1999 (1999), S. 35-39

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ISSN: 1434-1948

Keywords: Fluorescent sensors ; Molecular recognition ; Charge transfer excited states ; Metal complexes ; pH Sensors ; Chemistry ; General Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The fluorescent emission of the N,N-dimethylaniline fragment of the tetramine system 3varies with pH, displaying a maximum of the fluorescent intensity, IF, at pH = 5. Binding of transition metals (CuII, NiII) induces fluorescence quenching and modifies the IF vs. pH profile, giving rise to an OFF-ON-OFF type of sensor. The [ZnII(3)]2+complex recognises carboxylate anions, both aliphatic and aromatic. Recognition is signalled via fluorescence quenching only for aromatic carboxylates.

Additional Material: 5 Ill.

Type of Medium: Electronic Resource

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