Photocatalysis in Organic Synthesis - Past, Present, and Future

The use of visible light as a catalyst in organic reactions has developed greatly in the last decade as a result of the increasing urge to implement energy-efficient and green processes and through the availability of light-emitting diodes as convenient sources of visible light. Although photoredox reactions with visible light have been used in a broad range of transformations, the mechanism behind these reactions needs to be understood to design better catalytic systems.