title: Zirconium(IV) metallocavitands as blue-emitting materials.
abstract: A series of zirconium-carboxylate metallocavitands with the general formula [(CpZr)3(μ-κ2,O',O″CR)3(μ3-O)(μ2-OH)3]Cl (Cp = cyclopentadienyl; R = C5H4N (5), C6H7N (6), C18H14N (7), and C18H12N (8)) were synthesized in moderate to high yields (40-83%) by reacting the corresponding carboxylic acids 1-4 with Cp2ZrCl2 in a self-assembly procedure at room temperature. The metallocavitands were characterized using (1)H and (13)C NMR spectroscopy and by single-crystal X-ray diffraction. Complexes 7 and 8 exhibit efficient photoluminescence properties in solution. The photoluminescence peak of 7 was observed at 464 nm and that of 8 at 422 nm with respective quantum yields in solution of 87 and 65%.
authors.affiliation: Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec (Québec), Canada , G1V 0A6.
authors.forename: Hassan
authors.initials: H
authors.lastname: Iden
authors.forename: Wenhua
authors.initials: W
authors.lastname: Bi
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Morin
authors.forename: Frédéric-Georges
authors.initials: FG
authors.lastname: Fontaine