Simultaneous modification of N-alkyl chains on cyclometalated and ancillary ligands of cationic iridium( iii ) complexes towards efficient piezochromic luminescence properties

Cationic Ir( iii )-based piezochromic luminescent (PCL) materials exhibiting efficient PCL features as well as excellent reversibility can be achieved by simultaneously modifying both ligands using appropriate N -alkyl chains.