Mechanically Tunable Circularly Polarized Luminescence of Liquid Crystal‐Templated Chiral Perovskite Quantum Dots

Abstract Endowing perovskite quantum dots (PQDs) with circularly polarized luminescence (CPL) offers great promise for innovative chiroptical applications, but the existing strategies are inefficient in acquiring stimuli‐responsive flexible chiral perovskite films with large, tunable dissymmetry factor ( g lum ) and long‐term stability. Here, we report a strategy for the design and synthesis of luminescent cholesteric liquid crystal elastomer (Lumin‐CLCE) films with mechanically tunable CPL, which is enabled by liquid crystal‐templated chiral self‐assembly and in situ covalent cross‐linking of judiciously designed photopolymerizable CsPbX 3 (X=Cl, Br, I) PQD nanomonomers into the elastic polymer networks. The…

• NN
  National Natural Science Foundation of China

  Award: 52173181, 51973155, 52203143, 52327802
• NK
  National Key Research and Development Program of China

  Award: 2023YFB3812800, 2022YFB3805702
• SF
  Science Fund for Distinguished Young Scholars of Tianjin

  Award: 22JCJQJC00060