absorption for these aforementioned Ir(III) complexes is up to 600 nm as shown in the UV–visible absorption spectrum. The emission lifetimes of their excited states are good. Between the visible and near-infrared regions, Ir1–Ir5 possessed powerful excited-state absorption. Hence, a remarkably robust reverse saturable absorption (RSA) process can occur once the complexes are irradiated by a 532 nm laser. The