A covalent heterojunction enhances electron transfer and oxygen activation for photocatalytic C(sp 3 )–C(sp 2 ) cross-dehydrogenative coupling reactions

The covalently linked PCN-222(Cu)@TR-1 heterojunction photocatalyst promoted electron transfer and oxygen activation, showing great performance in aerobic photocatalytic C(sp 3 )–C(sp 2 ) CDC reactions of glycine derivatives and indoles.