Emission response towards three anions (F-, HSO4- and AcO-) by a luminescent europium ternary complex with a 2-arylimidazole-1,10-phenanthroline conjugate.
A novel ternary 2-(2-carboxylphenyl)imidazo[4,5-f]-1,10-phenanthroline-based europium(III) 2-thenoyltrifluoroacetonate complex with red luminescence was designed and prepared for anion recognition. Spectroscopic studies, including UV-vis, fluorescence and NMR, showed that the sensor exhibited striking emission changes in response to fluoride (green), hydrogen sulfate (blue) and acetate anions (pale blue) due to hydrogen bonding and competitive coordination with the Eu(III) ions.
Wang
Qianming
Q
School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, P. R. China. qmwang@scnu.edu.cn
Tan
Chaoliang
C
Tamiaki
Hitoshi
H
Chen
Hongyu
H
D019342:Acetic Acid / Q000737:chemistry; D000838:Anions / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry* / Q000528:radiation effects; D005063:Europium / Q000737:chemistry*; D005459:Fluorides / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D010618:Phenanthrolines / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013464:Sulfuric Acids / Q000737:chemistry
D000838:Anions; D056831:Coordination Complexes; D010618:Phenanthrolines; D013464:Sulfuric Acids; D005063:Europium; C033158:sulfuric acid; D019342:Acetic Acid; D005459:Fluorides; C025205:1,10-phenanthroline