Cycloplatinated(II) complexes containing bridging bis(diphenylphosphino)acetylene: Photophysical study

Jamshidi, M ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jlumin.2016.06.060
  3. Publisher: Elsevier , 2016
  4. Abstract:
  5. Reaction of the known cycloplatinated (II) complexes [PtAr(C^N)(SMe2)], in which Ar=p–MeC6H4 or p–MeOC6H4 and C^N= 2-phenylpyridinate (ppy) or benzo[h]quinolinate (bhq), with 0.5 equivalent of the bidentate phosphine ligand 1,1′–bis(diphenylphosphino)acetylene, dppac, in acetone at room temperature gave the symmetrical binuclear cycloplatinated(II) complexes [Pt2Ar2(C^N)2(μ–dppac)], 1–4, in which dppac acts as a bridging bidentate ligand. All the complexes were fully characterized using multinuclear (1H, 31P and 195Pt) NMR spectroscopy and the complex [Pt2(p–MeC6H4)2(ppy)2(μ–dppac)], 1, was further identified by single crystal X-ray structure determination. Additional information about the geometries and electronic spectra of these cycloplatinated (II) complexes are discussed. Effects of aryl and C^N ligands on the luminescent properties of the complexes were also investigated that are complying well with the related DFT/TD-DFT calculations
  6. Keywords:
  7. Biphosphine ligands ; Cycloplatinated complexes ; Photophysics ; Platinum ; TD-DFT calculations
  8. Source: Journal of Luminescence ; Volume 179 , 2016 , Pages 222-229 ; 00222313 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0022231316302083