title: "Cymothoe sangaris": an extremely stable and highly luminescent 1,2-hydroxypyridinonate chelate of Eu(III).
abstract: The synthesis, structure, and characterization of a new class of luminescent agents based on the 1,2-hydroxypyridinone chelator are reported. The prototype complex, [Eu(5LIO-1,2-HOPO)2]-, demonstrates superb aqueous stability [pEu = 18.64(10)] and is highly emissive [Phit = 0.21(3)], emitting almost pure "red" light (lambdaem = 612 nm). The crystal structure reveals a coordination geometry reminiscent of a "butterfly", hence the soubriquet of "Cymothoe sangaris" to identify with the unique species of red butterfly found only in Central Africa.
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720-1460, USA.
authors.forename: Evan G
authors.initials: EG
authors.lastname: Moore
authors.forename: Jide
authors.initials: J
authors.lastname: Xu
authors.forename: Christoph J
authors.initials: CJ
authors.lastname: Jocher
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Werner
authors.forename: Kenneth N
authors.initials: KN
authors.lastname: Raymond
mesh_terms: D002614:Chelating Agents / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000737:chemistry*; D013054:Spectrophotometry, Atomic
chemical_list: D002614:Chelating Agents; D049408:Luminescent Agents; D005063:Europium