Investigation of the N^C Ligand Effects on Emission Characteristics in a Series of Bis-Metalated [Ir(N^C)₂(N^N)]⁺ Complexes.

ABSTRACT: A series of bis-metalated phosphorescent [(N^C)₂Ir(bipyridine)]⁺ complexes with systematic variations in the structure and electronic characteristics of the N^C ligands were synthesized and characterized by using elemental analysis, mass spectrometry, NMR spectroscopy and X-ray crystallography. Investigation of the complexes' spectroscopic properties together with DFT and TD DFT calculations revealed that metal-to-ligand charge transfer (MLCT) and intraligand (LC) transition play key roles in the generation of emissive triplet states. According to the results of theoretical studies, the ³LC excited state is more accurate to consider as an intraligand charge transfer process (ILCT) between N- and C-coordinated moieties of the N^C chelate. This hypothesis is

SUBMITTER: Hendi Z 

PROVIDER: S-EPMC10054739 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature