Fig. 3: Characterization of the photophysical properties of AIE COFs.

a Illustration of the advantages of COF-919 with planar and twisted monomers. b UV/vis light absorption spectra of AIE COFs. Steady-state (c) and time-resolved (d) photoluminescence spectra of AIE COFs. e, f Band gap of COF-818 and COF-919. g Binding energy of COF-818 and COF-919. h Band structure of COF-818 and COF-919. i DFT calculations for COF-818 and COF-919. Source data are provided as a Source Data file.