Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume -, Issue -, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202302011
Keywords
Binuclear Pt-II Complexes; Chirality Self-Sorting; Circularly Polarized Luminescence; Organic Light-Emitting Diodes
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In this study, binuclear Pt-II complexes with metal-induced planar chirality were synthesized and characterized. These complexes successfully solved the problems of lack of metal-induced chirality and aggregation-caused quenching, making them highly promising for applications.
Pt-II complexes have attracted a great deal of interest due to their rich phosphorescent properties. However, these square-planar Pt-II complexes are 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-induced planar chirality were synthesized and characterized. These soft bridging ligands with smaller conjugated system would help to not only improve solubility for synthesis and enantioseparation but also introduce point chirality from amino acid for highly efficient diastereoselectivity. Furthermore, the intramolecular Pt-Pt distances could be well regulated by soft bridging ligands, and consequently the phosphorescence quantum yield up to 100 % could be achieved by shortening intramolecular Pt-Pt distance for first time. These complexes can be used as emitters in highly efficient solution-processed organic light-emitting diodes.
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