Exclusive fluoride ion recognition and fluorescence "turn-on" response with a label-free DMN Schiff base

Exclusive fluoride ion recognition and fluorescence "turn-on" response with a label-free DMN Schiff base

A label-free DMN Schiff base (4) has been explored as a highly selective and sensitive fluoride ion receptor. Fluoride-induced deprotonation results in a charge transfer (CT) transition red shifted with a fluorescence 'turn-on'. Anion selectivity can be tuned by the electron push-pull prop...

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Veröffentlicht in:Analyst (London) 2013-09, Vol.138 (17), p.4760-4763
Hauptverfasser: Kaloo, Masood Ayoub, Sankar, Jeyaraman
Format: Artikel
Sprache:eng
Schlagworte:
Charge transfer
Fluorescence
Fluorides
Fluorides - chemistry
Nitriles - chemistry
Phenyls
Recognition
Schiff bases
Schiff Bases - chemistry
Selectivity
Spectrometry, Fluorescence
Substrate Specificity
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Zusammenfassung:A label-free DMN Schiff base (4) has been explored as a highly selective and sensitive fluoride ion receptor. Fluoride-induced deprotonation results in a charge transfer (CT) transition red shifted with a fluorescence 'turn-on'. Anion selectivity can be tuned by the electron push-pull property of substituents at the phenyl para-position. Selectivity for F(-) is attributed to the suitable acidity of -NH2.
ISSN:0003-2654
1364-5528
DOI:10.1039/c3an00942d