Fig. 2: Structural characterization of Py-TFImI-25 COF and Py-TFIm-25 COF.
From: Efficient and selective capture of thorium ions by a covalent organic framework
a, c PXRD profiles of a Py-TFImI-25 COF and c Py-TFIm-25 COF. b, d Structure models of b Py-TFImI-25 COF and d Py-TFIm-25 COF viewed along the c-axis (upper) and a-axis (lower) (gray, C; blue, N; light green, F; light gray, H; red, I). e N2 sorption isotherms. The inset shows the pore-size distributions calculated from the non-local density theory. f FT-IR spectra.
