Solid-State Mechanochemistry for the Rapid and Efficient Synthesis of Tris-Cyclometalated Iridium(III) Complexes Tris-cyclometalated iridium(III) complexes have received widespread attention as attractive prospective materials for e.g., organic light-emitting diodes (OLEDs), photoredox catalysts, and bioimaging probes. However, their preparation usually requires prolonged reaction times, significant amounts of high-boiling solvents, multistep synthesis, and inert-gas-line techniques.