Unprecedented Ir(iii) cationic complexes based on tridentate tetrazolate ligands: synthesis, photophysics and encapsulation in SiO₂ nanoparticles

Ir( iii ) complexes derived from 2-(tetrazole-5-yl)-1,10-phenanthroline (phenttz) were prepared. The complex [Ir(tpy)(phenttz)] 2+ was embedded within silica nanoparticles and its emissive properties improved.