Extended Data Fig. 2: Crystal structures.

a–c, The top view of unit cells of Hz-TP-BT-COF (a), Im-TP-BT-COF (b) and sp2c-TP-BT-COF (c). d–f, The side view of unit cells of Hz-TP-BT-COF (d), Im-TP-BT-COF (e) and sp2c-TP-BT-COF (f).

a–c, The top view of unit cells of Hz-TP-BT-COF (a), Im-TP-BT-COF (b) and sp2c-TP-BT-COF (c). d–f, The side view of unit cells of Hz-TP-BT-COF (d), Im-TP-BT-COF (e) and sp2c-TP-BT-COF (f).