Recycling of brush polymer containing iridium photocatalyst supported on glass balls

Abstract

The synthesis of a new glass-supported iridium photocatalyst is reported. The use of brush polymer to covalently link the iridium ancillary ligand (2,2-bipyridine derivative) to the glass, allows 0.5 wt% of iridium loading on 9–13 μm glass balls. Cross dehydrogenative coupling (CDC) was selected as a benchmark reaction of photoredox reaction. The photocatalytic material has been recycled 10 time without loss of activity. To the best of our knowledge, this is the first functionalization of glass spheres by a brush polymer to immobilize iridium photocatalyst.