Direct electron transfer in a covalent triazine framework for enhanced photocatalytic hydrogen evolution.

Inspired by the direct charge transfer in the natural photosystems, herein, we design covalent triazine frameworks (CTFs) with direct electron transfer by constructing the minimal amount of -donor-acceptor 1-acceptor 2- type moieties in the CTF backbone for photocatalytic hydrogen evolution. By introducing only 0.75% of the acceptor 2, the as-prepared CTF exhibited an enhanced hydrogen evolution rate of 3215 μmol g -1 h -1 .