title: Quinoxaline-imidazolium receptors for unique sensing of pyrophosphate and acetate by charge transfer.
abstract: [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.
authors.affiliation: Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, San 31, Hyojadong, Namgu, Pohang 790-784, Korea.
authors.forename: N Jiten
authors.initials: NJ
authors.lastname: Singh
authors.forename: Eun Jin
authors.initials: EJ
authors.lastname: Jun
authors.forename: Kavitha
authors.initials: K
authors.lastname: Chellappan
authors.forename: Daniel
authors.initials: D
authors.lastname: Thangadurai
authors.forename: R Prakash
authors.initials: RP
authors.lastname: Chandran
authors.forename: In-Chul
authors.initials: IC
authors.lastname: Hwang
authors.forename: Juyoung
authors.initials: J
authors.lastname: Yoon
authors.forename: Kwang S
authors.initials: KS
authors.lastname: Kim
mesh_terms: 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
chemical_list: D000085:Acetates; D000838:Anions; D011756:Diphosphates; D005456:Fluorescent Dyes; D007093:Imidazoles; D011810:Quinoxalines