Abstract
The absorption of light by photosensitizers has been shown to offer novel reactive
pathways through electronic excited state intermediates, complementing ground-state
mechanisms. Such strategies have been applied in both photocatalysis and photoredox
catalysis, driven by generating reactive intermediates from their long-lived excited
states. One developing area is photoinduced ligand-to-metal charge transfer (LMCT)
catalysis, in which coordination of a ligand to a metal center and subsequent excitation
with light results in the formation of a reactive radical and a reduced metal center.
This mini review concerns the foundations and recent developments on ligand-to-metal
charge transfer in transition-metal catalysis, focusing on the organic transformations
made possible through this mechanism.
1 Introduction
2 Iron
3 Cobalt
4 Nickel
5 Copper
6 Future Outlook and Conclusion
Key words
ligand-to-metal charge transfer - photocatalysis - base-metal catalysis - organic
synthesis - photochemistry - photoredox catalysis
