Iridium(III) tris-cyclometalated complexes with diphenyloxazolic ligands: influence of ligand structure on electrochemical and photophysical properties

摘要

Two luminescent iridium(III) tris-cyclometalated complexes with isomeric 2,4-diphenyloxazolato and 2,5-diph-enyloxazolato ligands,fac-Ir(24dpo)_3 and fac-Ir(25dpo)_3,are reported.The molecular structure for Ir(24dpo)_3 was determined by X-ray diffraction.Electrochemical and spectroscopic studies supported by structures are discussed so as to demonstrate how the ligand structure influences the luminescent properties.