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Article Dans Une Revue Polyhedron Année : 2015

Luminescent bis-cyclometallated iridium(III) complexes containing phosphine-based ligands: Influence of the P^N bridge

Résumé

Three cationic bis-cyclometallated iridium complexes [Ir(C^N-ppyMe)2(P^N)][PF6](1-3) with 4-methyl-2-phenylpyridine (ppyMe) as the C^N-cyclometallated ligands and 8-(diphenylphosphino)quinoline (Ph2Pqn, L1), 2-(diphenylphosphinoamino)pyridine (Ph2PNHpy, L2) or 2-(diphenylphosphinoamino) pyrimidine (Ph2PNHpym, L3) as P^N-ligands, were prepared, and their crystal structures and photoluminescence were investigated. The substitution of an "aromatic CAr" (of a quinolyl group) by an "NH" bridge between the phosphine and imine ligating units of the P^N ligand dramatically changes the luminescence characteristics of the resulting complexes. The complexes 2-3 featuring the P-NH-N ligand emit in the blue region, whereas complex 1 incorporating the P-CAr-N unit displays orange photoluminescence.
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Dates et versions

hal-01072458 , version 1 (08-10-2014)

Identifiants

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Braulio Aranda, Pedro Aguirre, Sergio A. Moya, Mickaële Bonneau, J.A. Gareth Williams, et al.. Luminescent bis-cyclometallated iridium(III) complexes containing phosphine-based ligands: Influence of the P^N bridge. Polyhedron, 2015, 86, pp.120-124. ⟨10.1016/j.poly.2014.06.027⟩. ⟨hal-01072458⟩
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