Photoredox Chemistries of Cyclometalated Ir(iii) Complexes

Abstract

Cyclometalated Ir(iii) complexes have emerged as promising alternatives to conventional organic molecules and late transition metal complexes in photoelectronic applications. In particular, photoinduced electron transfer involving Ir(iii) complexes has provided useful principles for creating biosensors and photoredox catalysts. This chapter outlines the general mechanism of inter- and intramolecular photoinduced electron transfer of Ir(iii) complexes. This knowledge is employed to explain the molecular design of phosphorescence probes of biometals and the mechanism of photoredox catalysis of organic transformations. The excited-state electrochemistry demonstrates the unique photofunctionality of the Ir(iii) complexes and will serve as the key principle of novel utilities.