title: Luminescent complexes of terbium ion for molecular recognition of ibuprofen.
abstract: The complexation behavior and luminescent properties of terbium (Tb(3+) ) complexes containing bi-dental ligands were studied: nitrogen - 1,10-phenanthroline, and oxygen - trifluoroacetylacetone as well as acetylacetone ligands with ibuprofen (Ibu; a non-steroidal anti-inflammatory drug). Aqueous and aqueous alcohol microheterogeneous solutions were used as media. The effects of solubilization by various micellar solutions, pH and ligand type on luminescent properties of Tb(3+) complexes were investigated. Sensitized luminescence of mixed ligand complex Tb(1,10-phenanthroline)-Ibu and dynamic quenching effect in complex Tb(trifluoroacetylacetone)3 -Ibu allow Ibu determination with the limit of detection 5.3 × 10(-8)  mol/L and 1.26 × 10(-6)  mol/L, respectively.
authors.affiliation: Kazan National Research Technological University, Department Physical and Colloid Chemistry, K. Marks 68, Kazan, 420015, Russia.
authors.forename: Natalia
authors.initials: N
authors.lastname: Selivanova
authors.forename: Kristina
authors.initials: K
authors.lastname: Vasilieva
authors.forename: Yury
authors.initials: Y
authors.lastname: Galyametdinov
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry*; D007052:Ibuprofen / Q000737:chemistry*; D049449:Luminescence; D008163:Luminescent Measurements / Q000295:instrumentation / Q000379:methods*; D015394:Molecular Structure; D013725:Terbium / Q000737:chemistry*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D013725:Terbium; D007052:Ibuprofen
keywords: ibuprofen; micelle, quenching luminescence; sensitized luminescence; terbium