Metal‐Induced Planar Chirality of Soft‐Bridged Binuclear Platinum(II) Complexes: 100% Phosphorescence Quantum Yields, Chiral Self‐Sorting, and Circularly Polarized Luminescence

Pt(II) complexeshave attracteda great deal of interest due totheir richphosphorescentproperties.  However,thesesquare-planar Pt(II) complexesare far more likely to encounter the problems of  lack  of metal-induced chirality and emission “aggregation-caused quenching”. Herein, soft-bridged  binuclear  Pt(II)  complexes bearing metal-inducedplanarchiralitywere  synthesized  and  characterized. These soft  bridging  ligandswith  smallerconjugated  system would help tonot onlyimprove solubilityfor synthesis and enantioseparation but  also  introduce  point  chirality  from  amino  acid  for  highly  efficient diastereoselectivity.Furthermore, theintramolecular Pt–Pt distances could be well regulated by soft bridging ligands, and consequently the phosphorescence  quantum  yield up  to100%could  be  achieved  by shortening   intramolecular   Pt–Pt   distance   for   first   time. These complexes can  beused  as  emitters  in  highly  efficientsolution-processed organic light-emitting diodes.