Aggregate (Oct 2024)

Homochiral metalated tetraphenylethylene‐based organic cages: Unusual chiral and luminescent behavior depending on thermodynamic and kinetic aggregation

  • Hao‐Jie Zhang,
  • Ya‐Liang Lai,
  • Hu Yang,
  • Xian‐Chao Zhou,
  • Zi‐Jun Yuan,
  • Li Deng,
  • Xiao‐Lan Hu,
  • Xue Li,
  • Xiao‐Ping Zhou,
  • Dan Li

DOI
https://doi.org/10.1002/agt2.598
Journal volume & issue
Vol. 5, no. 5
pp. n/a – n/a

Abstract

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Abstract Chirality and luminescence are important for both chemistry and biology, which are highly influenced by aggregation. In this work, a pair of metalated tetraphenylethylene(TPE)‐based organic cage enantiomers are reported, which feature a quadrangular prismatic cage structure. These homochiral cages exhibit concentration‐dependent chiral behaviors alongside a propensity for thermodynamic aggregation. Aggregation caused quench effect is found for these cages accompanying the increasing of the concentrations. When a poor solvent is added to produce a kinetical aggregation, the aggregation‐annihilation circular dichroism and aggregation‐induced emission behaviors are observed for these enantiomeric cages. By comparing these observations with the photophysical behaviors of a pair of structurally similar organic molecular enantiomers, the unique photophysical properties observed are intricately linked to the metal‐integrated TPE‐functionalized cage structures.

Keywords