Quinoxaline−Imidazolium Receptors for Unique Sensing of Pyrophosphate and Acetate by Charge Transfer

Quinoxaline−Imidazolium Receptors for Unique Sensing of Pyrophosphate and Acetate by Charge Transfer

Quinoxaline derivatives (1−4) bearing two imidazolium moieties are found to strongly bind anions and show unique charge-transfer fluorescent responses to pyrophosphate and acetate, whereas they show excimer formation with other anions. Anion-binding studies are investigated with fluorescence and 1H...

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Veröffentlicht in:Organic letters 2007-02, Vol.9 (3), p.485-488
Hauptverfasser: Singh, N. Jiten, Jun, Eun Jin, Chellappan, Kavitha, Thangadurai, Daniel, Chandran, R. Prakash, Hwang, In-Chul, Yoon, Juyoung, Kim, Kwang S
Format: Artikel
Sprache:eng
Schlagworte:
Acetates - chemistry
Anions
Binding Sites
Biosensing Techniques - methods
Crystallography, X-Ray
Diphosphates - chemistry
Electron Transport
Fluorescence
Fluorescent Dyes - chemistry
Imidazoles - chemistry
Magnetic Resonance Spectroscopy
Quinoxalines - chemistry
Spectrometry, Fluorescence
X-Rays
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Zusammenfassung:Quinoxaline derivatives (1−4) bearing two imidazolium moieties are found to strongly bind anions and show unique charge-transfer fluorescent responses to pyrophosphate and acetate, whereas they show excimer formation with other anions. Anion-binding studies are investigated with fluorescence and 1H NMR analysis, single-crystal X-ray analysis, and theoretical calculations.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol062849b