Fig. 7
From: Sub-stoichiometric 2D covalent organic frameworks from tri- and tetratopic linkers
Post-crystallization amine to isothiocyanate group interconversion reaction with PY-COF. a FT-IR spectrum of PY-NCS- and PY-COF showing the appearance of νN=C =S(stretch) signal post modification. b PXRD pattern of PY-NCS-COF with corresponding Rietveld refinement (magenta) showing good fits to the experimental data (black) with minimal differences. The turquoise trace shows the difference between the experimental data and the refinement. The corresponding Miller indices of the identifiable reflections are shown as well. The inset shows an illustration of the COF structure model (viewed along the stacking direction)
