Fig. 3: Confining proton network in nanochannel.
From: Confining H3PO4 network in covalent organic frameworks enables proton super flow
a Reconstructed crystal structure of H3PO4@TPB-DMeTP-COF (top view) with the H3PO4 network locked in the 1D channel (each macrocycle of one layer contains 57 H3PO4 molecules; only 20 layers are shown; grey, C; blue, N; white, H; red, O; orange, P). Inset, the Nin⋯H–O hydrogen-bonding interactions between channel walls and H3PO4 network. b Reconstructed crystal structure of H3PO4@TPB-DMeTP-COF (side view).
