Fig. 1. (A) Schematic representation of anionic TBS and cationic DAB synthons of the porous organic framework. (B) View of the porous framework along the c-axis; yellow represents the empty channels (a rolling sphere of 1.4 Å was used). The channel running parallel to the c-axis: (C) the synthons are connected through a H-bonding network in a helical fashion; (D) electrostatic map showing the positively and negatively charged helical ribbons.