Luminescence of ortho-metallated platinum(II) complexes
1985; Elsevier BV; Volume: 122; Issue: 4 Linguagem: Inglês
10.1016/0009-2614(85)80240-2
ISSN1873-4448
AutoresMauro Maestri, D. Sandrini, Vincenzo Balzani, Laurent Chassot, Philippe Jolliet, Alex von Zelewsky,
Tópico(s)Metal complexes synthesis and properties
ResumoThe absorption spectra, emission spectra, and emission lifetimes of Pt(Phpy)2, Pt(Thpy)2, and Pt(Bhq)2 complexes (Phpy−, Thpy−, and Bhq− are the ortho C-deprotonated forms of 2-phenylpyridine, 2-(2-thienyl)-pyridine, and benzo(h)quinoline) have been studied and compared with those of the C-protonated neutral ligands. For all complexes examined the low-energy absorption bands in the near UV and visible region are assigned to metal-to-ligand charge-transfer transitions. The strong and structured luminescence emissions observed in the 500–600 nm region (lifetime in the microsecond range at 77 K) are assigned to metal-to-ligand charge-transfer excited states.
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