37701-78-3Relevant academic research and scientific papers
Luminescence and theoretical studies of Cu(tripod)X [tripod = 1,1,1-tris(diphenylphosphanylmethyl)ethane; X- = halide, thiophenolate, phenylacetylide]
Pawlowski, Valeri,Knoer, Guenther,Lennartz, Christian,Vogler, Arnd
, p. 3167 - 3171 (2005)
Complexes of the type CuI(tripod)X [tripod = 1,1,1 -tris (diphenylphosphanylmethyl)ethane; X- = Br-, I-, PhS-, PhC≡C-] are phosphorescent in solution and in the solid state (λmax ≈ 465 nm). Calculations show that the emissive triplet is of mixed MLCT/LLCT character. The emission is facilitated by the rigid tetrahedral structure, which is imposed by the tripod ligand. Accordingly, a distortion towards a square-planar geometry, which should occur upon MLCT excitation, is prevented. On the other hand, in the triplet state the phenyl substituents of the phosphane ligands undergo a rotation which favours radiationless deactivation. As a result, the emission efficiency is relatively small in solution, but much higher in the solid state owing to the rigidity of the lattice. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.
