title: Metal-controlled assembly of near-infrared-emitting pentanuclear lanthanide beta-diketone clusters.
abstract: Metal-controlled assembly results in a series of lanthanide clusters with the formula of Ln(5)(DBM)(10)(OH)(5) x n(solvent) (DBM = dibenzoylmethanido; Ln = Nd (1), Gd (2), Er (3), and Yb (4); solvent = CH(3)CN or toluene). These pentanuclear clusters with square-pyramidal core structures have been characterized by X-ray diffraction analysis. Clusters 1, 3, and 4 show typical near-infrared (NIR) luminescence upon excitation at 350 nm, which represents the first examples of pentanuclear lanthanide clusters with sensitized NIR emission.
authors.affiliation: Department of Chemistry and Biochemistry and Center for Nano and Molecular Science and Technology, The University of Texas at Austin, 1 University Station, A5300, Austin, Texas 78712-0165, USA.
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Chen
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Yang
authors.forename: Bradley J
authors.initials: BJ
authors.lastname: Holliday
mesh_terms: D007659:Ketones / Q000737:chemistry*; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008670:Metals / Q000737:chemistry*; D008958:Models, Molecular; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D014961:X-Ray Diffraction
chemical_list: D007659:Ketones; D028581:Lanthanoid Series Elements; D008670:Metals