Synthesis And Application Of Photoluminescence Iridium Complexes Cotaining Amide Ligands

Ir(Ⅲ) complexes of heavy metals such elements can have a strong spin-orbit coupling. The original prohibited the triplet state transitions into permitting, Then achieve strong phosphorescence launch, Components can be greatly improved luminous efficiency. The light-emitting nature of such metal ions complexes mainly in the main ligand, and ancillary ligands can only fine-tuning it.A series of heteroleptic cyclometalate Ir complexes with acylamide derivants as ancillary ligands: (ppz)2Ir(ayl),(ppz)2Ir(nap-ph-ayl) and (ppz)2Ir(Cl-ayl),And by elemental analysis, melting point determination, diffusion, NMR methods and so on of synhetic compounds for structrual characterization.All the complexes give rise to resemble absorptions at around 250nm, The absorption spectra of all the complexes show intense higher energy transitionsπ-π* (from 240nm to 280 nm) as well as comparatively lower energy and broad singlet and triplet metal to ligand charge-transfer from 280nm to 400nm. and their solution emissions are all fell into the red light region but differ in the max emission wavelength about 610nm, which prove all the complexes are red phosphorescence complexes.