There have been interesting developments in photocatalysis in the past few decades. Many of these novel compounds have been applied to solar cell research, light emitting diode manufacturing (LED) and initiators for free radical polymerisations.
Specifically, cyclometallated ruthenium and iridium complexes are the most prominent. Recently, these compounds have been successfully applied to catalytic transformations. These catalysts can also be utilised in challenging organic transformations in both bench-top and commercial scales.