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