Fluorescent sensing of pyrophosphate and bis-carboxylates with charge neutral PET chemosensors.
[reaction: see text] The fluorescent photoinduced electron transfer (PET) chemosensors 2 and 3 were designed for the recognition of anions possessing two binding sides such as dicarboxylates and pyrophosphate; the anion recognition in DMSO takes place through the two charge neutral thiourea receptor sites with concomitant PET quenching of the anthracene moiety. The anion binding of acetate, phosphate, and pyrophosphate to 2 and 3 was also evaluated by using 1H NMR in DMSO-d6.
Department of Chemistry, Trinity College Dublin, Dublin 2, Ireland, and School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK. gunnlaut@tcd.ie
Thorfinnur
T
Gunnlaugsson
Anthony P
AP
Davis
John E
JE
O'Brien
Mark
M
Glynn
D000838:Anions / Q000032:analysis; D001665:Binding Sites; D015374:Biosensing Techniques / Q000379:methods*; D003998:Dicarboxylic Acids / Q000032:analysis*; D011756:Diphosphates / Q000032:analysis*; D004583:Electrons; D005453:Fluorescence; D009682:Magnetic Resonance Spectroscopy; D017186:Titrimetry
D000838:Anions; D003998:Dicarboxylic Acids; D011756:Diphosphates