Photoinduced Electron-Transfer in First-Row Transition Metal Complexes

In this chapter, after a brief summary of the basic photophysical and photochemical concepts, the state of the art of the photoinduced electron transfer of the first-row transition metal complexes is discussed. The chapter expands all the first-row transition metals, discussing selected examples that illustrate the main strategies to control and improve photoredox catalysis as well as the challenges associated to the use of 3d metal-based photosensitizers.