Quinoxaline-imidazolium receptors for unique sensing of pyrophosphate and acetate by charge transfer.
[structure: see text] 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.
Singh
N Jiten
NJ
Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, San 31, Hyojadong, Namgu, Pohang 790-784, Korea.
Jun
Eun Jin
EJ
Chellappan
Kavitha
K
Thangadurai
Daniel
D
Chandran
R Prakash
RP
Hwang
In-Chul
IC
Yoon
Juyoung
J
Kim
Kwang S
KS
D000085:Acetates / Q000737:chemistry*; D000838:Anions; D001665:Binding Sites; D015374:Biosensing Techniques / Q000379:methods*; D018360:Crystallography, X-Ray; D011756:Diphosphates / Q000737:chemistry*; D004579:Electron Transport; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D011810:Quinoxalines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014965:X-Rays
D000085:Acetates; D000838:Anions; D011756:Diphosphates; D005456:Fluorescent Dyes; D007093:Imidazoles; D011810:Quinoxalines