Quantum Yields over 80% Achieved in Luminescent Europium Complexes by Employing Diphenylphosphoryl Tridentate Ligands

Chen Wei; Boxun Sun; Zelun Cai; Zifeng Zhao; Yu Tan; Weibo Yan; Huibo Wei; Zhiwei Liu; Zuqiang Bian; Chunhui Huang

doi:10.1021/acs.inorgchem.8b01028

Quantum Yields over 80% Achieved in Luminescent Europium Complexes by Employing Diphenylphosphoryl Tridentate Ligands

Inorg Chem. 2018 Jul 2;57(13):7512-7515. doi: 10.1021/acs.inorgchem.8b01028. Epub 2018 Jun 15.

Authors

Chen Wei¹, Boxun Sun¹, Zelun Cai¹, Zifeng Zhao¹, Yu Tan¹, Weibo Yan¹, Huibo Wei¹, Zhiwei Liu¹, Zuqiang Bian¹, Chunhui Huang¹

Affiliation

¹ Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China.

PMID: 29906113
DOI: 10.1021/acs.inorgchem.8b01028

Abstract

Four tridentate europium(III) complexes containing a diphenylphosphoryl group are prepared with strong bonding between the ligands and centered ion, convinced by crystal structures. Compared to their parent bidentate complexes, the tridentate complexes display improved and exceptionally high photoluminescence quantum yields (PLQYs) in powder (all over 80%, best 91%), as well as in a CH₂Cl₂ solution and poly(methyl methacrylate) films, benefiting from compact, stable, and saturated coordination.