title: Metal-controlled diastereoselective self-assembly and circularly polarized luminescence of a chiral heptanuclear europium wheel.
abstract: The chiral dissymmetric tetradentate ligand (S)-6'-(4-phenyloxazolin-2-yl)-2,2'-bipyridine-6-carboxylate (S-Phbipox) leads to the diastereoselective assembly of a homochiral Eu(3+) triangle and a highly emissive (quantum yield = 27%) heptanuclear wheel that is the largest example of a chiral luminescent complex of Eu(3+) reported to date. The nuclearity of the assembly is controlled by the solvent and the Eu(3+) cation. All of the compounds show large circularly polarized luminescence with an activity that varies with the nature of the assembly (highest for the homochiral trimer).
authors.affiliation: Laboratoire de Reconnaissance Ionique et Chimie de Coordination, Service de Chimie Inorganique et Biologique, CEA-Grenoble, INAC, France.
authors.forename: Gülay
authors.initials: G
authors.lastname: Bozoklu
authors.forename: Christelle
authors.initials: C
authors.lastname: Gateau
authors.forename: Daniel
authors.initials: D
authors.lastname: Imbert
authors.forename: Jacques
authors.initials: J
authors.lastname: Pécaut
authors.forename: Koen
authors.initials: K
authors.lastname: Robeyns
authors.forename: Yaroslav
authors.initials: Y
authors.lastname: Filinchuk
authors.forename: Farah
authors.initials: F
authors.lastname: Memon
authors.forename: Gilles
authors.initials: G
authors.lastname: Muller
authors.forename: Marinella
authors.initials: M
authors.lastname: Mazzanti
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry; D002264:Carboxylic Acids / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D056831:Coordination Complexes / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D008024:Ligands; D049408:Luminescent Agents / Q000737:chemistry*; D008163:Luminescent Measurements; D008958:Models, Molecular; D013237:Stereoisomerism
chemical_list: D002264:Carboxylic Acids; D002412:Cations; D056831:Coordination Complexes; D008024:Ligands; D049408:Luminescent Agents; D005063:Europium; D015082:2,2'-Dipyridyl