Fig. 2: Characterization of the structural transformation.
From: Toward azo-linked covalent organic frameworks by developing linkage chemistry via linker exchange
Comparisons of (a, b) FT-IR spectra, (c, d) 13C CP-MAS NMR spectra, (e, f) Raman spectra, and (g, h) PXRD patterns between the imine-linked COFs and azo-linked COFs.
