Check our last collaboration with Mateo-Alonso´s group in Polymat. Marta-COF-1 is a nonplanar 2D-COF in which the waviness of the framework does not disrupt the interlayer p-p stacking so their charge transporting properties are similar to those of the best performing planar 2D COFs. The high stability and crystallinity of Marta-COF-1 have allowed an extraordinary level of characterization by HR-TEM, showing chairlike honeycomb facets and aligned mesoporous channels consistent with the experimental and predicted dimensions and packing. For more info see here