Chiral covalent–organic frameworks as a new class of circularly polarized luminescent materials

Abstract

Chiral covalent organic frameworks (COFs) have emerged as a promising class of circularly polarized luminescent (CPL) materials. This review systematically summarizes the synthesis and CPL activity of chiral COFs, including synthetic strategies, chirality–luminophore integration approaches, and film fabrication techniques for potential applications as well as mechanistic insights for chiroptical properties. Moreover, this review provides perspectives on future efforts for optimizing CPL performance, exploring diversified frameworks, and elucidating chirality transfer kinetics to unlock applications in optical encryption and biomedicine.