Extended Data Fig. 1: Characterization of chemical structure.
From: Synthesis of covalent organic frameworks via coupling polymerization
a, FT IR spectra of TEPB (black curve) and spC4-COF-1 (red curve). b, FT IR spectra of TEPPy monomer (black curve), spC4-COF-2 (red curve) and spC4-COF-3 (blue curve). c, 13C solid-state CP/MAS NMR spectrum and peak assignments of spC4-COF-1. d, Solid-state 13C CP/MAS NMR spectrum of spC4-COF-2 and peak assignments. e, Solid-state 13C CP/MAS NMR spectrum and peak assignments of spC4-COF-3. In c–d, * show side peaks.
