Figure 2.

(a) Scheme for the synthesis of 3D-CageCOF-1 from Cage-6-NH₂ and DHTPA, which can be topologically represented as a triangular prism and a linear strut, respectively. Model atom colors: C, white; N, blue; O, red. H atoms are omitted for clarity. (b, c) Two views of an acs crystal net, where the purple nodes represent the cage-based building blocks; (d, e) two comparable views of the 2-fold interpenetrated acs-c net (c, catenated), with the cage nodes belonging to the different nets colored in purple or green.