title: Sensitized near-infrared emission from ytterbium(III) via direct energy transfer from iridium(III) in a heterometallic neutral complex.
abstract: A tetrametallic iridium-ytterbium complex has been synthesised that shows sensitized near-infrared emission (lambda(max) = 976 nm) upon excitation of the iridium unit in the visible region (400 nm) due to efficient energy transfer from the iridium units to the Yb(III) ion. The iridium phosphorescence is quenched nearly quantitatively while the ytterbium ion emits brightly in the NIR.
authors.affiliation: Westfälische Wilhelms-Universität Münster, Department of Physics, and the Center for Nanotechnology (CeNTech), Heisenbergstrasse 11, 48149, Münster, Germany.
authors.forename: Marita
authors.initials: M
authors.lastname: Mehlstäubl
authors.forename: Gregg S
authors.initials: GS
authors.lastname: Kottas
authors.forename: Silvia
authors.initials: S
authors.lastname: Colella
authors.forename: Luisa
authors.initials: L
authors.lastname: De Cola
mesh_terms: D004735:Energy Transfer; D007495:Iridium / Q000737:chemistry*; D015394:Molecular Structure; D013055:Spectrophotometry, Infrared; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D007495:Iridium; D015018:Ytterbium