Data_Sheet_1_Enhanced Circularly Polarized Luminescence Activity in Chiral Platinum(II) Complexes With Bis- or Triphenylphosphine Ligands.docx (4.18 MB)

Data_Sheet_1_Enhanced Circularly Polarized Luminescence Activity in Chiral Platinum(II) Complexes With Bis- or Triphenylphosphine Ligands.docx

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posted on 24.04.2020, 04:15 by Qian-Ying Yang, Hua-Hong Zhang, Xue-Ling Han, Shi-Dao Weng, Yuan Chen, Jia-Li Wu, Li-Zhi Han, Xiao-Peng Zhang, Zai-Feng Shi

Distinct circularly polarized luminescence (CPL) activity was observed in chiral (CNN)Pt(II) [(CNN) = 4,5-pinene-6′-phenyl-2,2′-bipyridine] complexes with bis- or triphenylphosphine ligands. Compared to the pseudo-square-planar geometry of chiral (CNN)Pt(II) complexes with chloride, phenylacetylene (PPV) and 2,6-dimethylphenyl isocyanide (Dmpi) ligands, the coordination configuration around the Pt(II) nucleus of chiral (CNN)Pt(II) complexes with bulk phosphine ligands is far more distorted. The geometry is straightforwardly confirmed by X-ray crystallography. The phosphines' participation enhanced the CPL signal of Pt(II) complexes profoundly, with the dissymmetry factor (glum) up to 10−3. The distorted structures and enhanced chiroptical signals were further confirmed by time-dependent density functional theory (TD-DFT) calculations.

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