Fig. 2: Photo-tailored reactive-crystallization of Schiff-base COM.
From: Photo-tailored heterocrystalline covalent organic framework membranes for organics separation
a Synthetic route (blue) of COM by dark reaction (DCOM) and synthetic route (yellow) of COM by photo reaction (PCOM) using reactive monomers of 2,2′-bipyridine-5,5′-diamine (Bpy) and 1,3,5-triformylphloroglucinol (Tp). b XRD patterns of the DCOM (blue) and PCOMs (yellow) formed under varied irradiation intensity ranging from 1.5 to 9.0 mW cm–2. c Schematic illustration of the excited-state intramolecular proton transfer (ESIPT) process of enol-imine linkage. d Steady-state photoluminescence emission spectra of the initial amorphous material dispersed in either aqueous phase (solid lines) or organic phase (dashed lines). These samples were excited at 300 nm.
