Fig. 1: Schematic illustration of the synthesis strategies. | Nature Communications

Fig. 1: Schematic illustration of the synthesis strategies.

From: Photocatalytic CO2 reduction to syngas using metallosalen covalent organic frameworks

Fig. 1

Synthesis strategies of metallosalen-covalent organic frameworks (M(salen)-COFs) (M = Zn and Co), including one-step synthesis (red route) and two-step synthesis (blue route). a Structures of 4-hydroxyisophthalaldehyde, ethylenediamine and metal species. b Structure of tridentate amine ligands. c Structures of M(salen)-CHO or MM(salen)-CHO.

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