Fig. 7: Benzylamine coupling reactions.

a Five runs of benzylamine coupling with TFPA-TAPT-COF-Q (red) and TFPA-TAPT-COF (blue) as the photocatalyst. b PXRD patterns, c FT-IR spectra and d N 1 s XPS spectra for TFPA-TAPT-COF-Q before and after photocatalytic reactions. e Proposed coupling mechanism of benzylamine.