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. 2015 Sep 30;6:8508. doi: 10.1038/ncomms9508

Figure 1. Design and synthesis of the Nx–COFs.

Figure 1

(a) A tunable triphenylarene platform for photocatalytic hydrogen evolution. Replacement of ‘C–H' by ‘nitrogen atoms' at the green dots changes the angle between central aryl and peripheral phenyl rings, which leads to varied planarity in the platform. (b) Synthesis of Nx–COFs from Nx–aldehydes and hydrazine.