Constructing Chiral Covalent‐Organic Frameworks for Circularly Polarized Light Detection

The use of chiral covalent organic frameworks (COFs) as active elements in photodetectors to directly identify circularly polarized light (CPL) can meet the requirement of integration and miniaturization of the as-fabricated devices. Herein, the design and synthesis of two isoreticular chiral two-dimensional (2D) COFs (CityU-7 and CityU-8) by introducing photosensitive porphyrin-based amines (5,10,15,20-tetrakis(4-aminophenyl)porphyrin) to enhance the optical absorption and chiral aldehyde linkage (2,5-bis((S/R))-2-methylbutoxy)terephthalaldehyde) to engender chirality for direct CPL detection are reported. Their crystalline structures were confirmed by powder X-ray diffraction, Fourier-transform infrared…

• CU
  City University of Hong Kong

  Awards: 7020089, 7005620, 7020040, 9380117
• NN
  National Natural Science Foundation of China

  Awards: 52122002, 62022001
• JU
  Jilin University

  Award: sklssm2023034
• SK
  State Key Laboratory of Supramolecular Structure and Materials

  Award: sklssm2023034
• YS
  Young Scientists Fund

  Award: 52122002