Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33737
Title: Synthesis, structures and photophysical properties of polynuclear copper(I) iodide complexes containing phosphine and 4,4 '-bipyridine ligands
Authors: Gan, X
Fu, WF
Lin, YY
Yuan, M
Che, CM
Chi, SM
Li, HFJ
Chen, JH
Chen, Y
Zhou, ZY
Keywords: Copper(I) iodide
Mixed ligands
Polynuclear complexes
Crystal structures
Photochemical studies
Issue Date: 2008
Publisher: Pergamon-Elsevier Science Ltd
Source: Polyhedron, 2008, v. 27, no. 9-10, p. 2202-2208 How to cite?
Journal: Polyhedron 
Abstract: The highly luminescent polynuclear Cu(I) iodide complexes, [(Cu(2)I(2))(4,4'-bipy)(PCy(3))(2)](2) center dot 4H(2)O (1), [(Cu(2)I(2))(4,4'-bipy)(PCy(3))(2)](infinity) (2), [(Cu(2)I(2))(4,4'-bipy)(dcpm)](infinity) (3) and [(Cu(2)I(2))(4,4'-bipy)(dppm)](infinity) (4), were prepared by reacting CuI with tricyclohexylphosphine (PCy(3)), bis(dicyclohexylphosphino)methane (dcpm) or bis(diphenylphosphino)methane (dppm) and 4,4'-bipyridine (4,4'-bipy), and their structures were determined by X-ray crystal analysis. The reported complexes [CuClPCy(3)](2) (5) and [CuIPCy(3)](2) (6) were also prepared for comparison. In solid state, complexes 1-6 display intense long-lived phosphorescence with lambda(max) at 605, 565, 640, 570, 430 and 450 nm at room temperature, and the solid-state emission quantum yields are 0.11, 0.20, 0.29, 0.35, 0.67 and 0.83, respectively. The relatively high-energy emissions of 5 and 6 are attributed to arising from metal-centered MC (3d --> 4s, 4p) excited state, while the low-energy emissions of 1-4 are assigned to a metal-to-ligand charge transfer (d --> pi(.) MLCT) excited state.
URI: http://hdl.handle.net/10397/33737
ISSN: 0277-5387
DOI: 10.1016/j.poly.2008.03.026
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