Warm-White-Light Perdeuterated Dy(III) Complex with a Photoluminescence Quantum Yield of up to 72% in Deuterated Chloroform

Zelun Cai; Wenchao Yan; Ruoyao Guo; Huanyu Liu; Peihao Huo; Gang Yu; Zuqiang Bian; Zhiwei Liu

doi:10.1021/acs.inorgchem.3c00721

Warm-White-Light Perdeuterated Dy(III) Complex with a Photoluminescence Quantum Yield of up to 72% in Deuterated Chloroform

Inorg Chem. 2023 May 1;62(17):6560-6564. doi: 10.1021/acs.inorgchem.3c00721. Epub 2023 Apr 21.

Authors

Zelun Cai¹, Wenchao Yan¹, Ruoyao Guo¹, Huanyu Liu¹, Peihao Huo¹, Gang Yu¹, Zuqiang Bian¹, Zhiwei Liu¹

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, China.

PMID: 37083359
DOI: 10.1021/acs.inorgchem.3c00721

Abstract

Herein, a deuteration strategy is proposed to enhance the photoluminescence quantum yield (PLQY) of a Dy(III) complex. The perdeuterated Dy(III) complex Dy(D-DPPOP)₃ (D-DPPOP = 6-[bis(phenyl-d₅)phosphoryl]picolinate-d₃) exhibits a high PLQY of up to 72% in deuterated chloroform, which is 4.8 times higher than that of the nondeuterated Dy(III) complex Dy(DPPOP)₃. Then the corresponding ultraviolet-excited light-emitting diode is fabricated, showing a warm-white light with a Commission Internationale de l'Eclairage (CIE) of (0.36, 0.41) and a color temperature of around 4800 K. The deuteration strategy to improve the PLQY of the Dy(III) complex is proved in this work, and it will inspire the further design of white-emission Dy(III) complexes with high efficiency.