Fig. 4: Practicability and carrier dynamics of COFs.

a, b Photocatalytic performance for LEV degradation with different pH, and toward other four typical emerging contaminants for BTT-DATP-COF. c Transient photocurrents spectra of three COFs. d–f 2D mapping TA spectra of BTT-DAB-COF, BTT-DADP-COF, and BTT-DATP-COF, and (g–i) TA spectra signals of three COFs on the fs-ns timescales.