Activated Circularly Polarized Luminescence in Chiral Supramolecular Template Triggered by Electrostatic and Arene–Perfluoroarene Interactions

Abstract

The approaches to the generation of circularly polarized luminescence (CPL) signals have attracted much interest, due to the potential application of CPL materials in information encryption, three-dimensional display, etc. However, most strategies mainly depend on the rational design and complicated synthesis of chiral fluorophores, highlighting the great significance of developing a facile and novel strategy for designing CPL materials. Here, we employed classical benzene-1,3,5-tricarboxamides-based chiral compound D/L-cC3 as the supramolecular template to co-assemble with pyrene-based fluorophore (Py0 or Py1) and octafluoronaphthalene (OFN). The supramolecular template D/L-cC3 could not effectively induce the chirality of Py derivates through electrostatic interactions. Importantly, chiral optical properties emerged in the ternary co-assembly system D/L-cC3-Py1-OFN through electrostatic and arene-perfluoroarene (AP) interactions, with the |glum| value of 5.1 × 10−3. These findings reveals that the chiral induction from chiral supramolecular template to achiral fluorophore may be ineffective through electrostatic interaction, and the joint effect of electrostatic and AP interactions provides a facile way to the generation of CPL properties.