Drastic Enhancement of Photosensitized Energy Transfer Efficiency of a Eu(III) Complex Driven by Arsenic

Toshiki Fujii; Yuichi Kitagawa; Yasuchika Hasegawa; Hiroaki Imoto; Kensuke Naka

doi:10.1021/acs.inorgchem.1c00577

Drastic Enhancement of Photosensitized Energy Transfer Efficiency of a Eu(III) Complex Driven by Arsenic

Inorg Chem. 2021 Jun 21;60(12):8605-8612. doi: 10.1021/acs.inorgchem.1c00577. Epub 2021 Jun 4.

Authors

Toshiki Fujii¹, Yuichi Kitagawa², Yasuchika Hasegawa², Hiroaki Imoto¹, Kensuke Naka¹

Affiliations

¹ Faculty of Molecular Chemistry and Engineering and Materials Innovation Lab, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
² Faculty of Engineering and Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 060-8628, Japan.

PMID: 34087071
DOI: 10.1021/acs.inorgchem.1c00577

Abstract

In this study, we focused on arsenic as a new potential motif for the ligand design of high-efficiency, luminous lanthanide complexes. A Eu³⁺ complex bearing triphenylarsine oxide had a photosensitized energy-transfer efficiency 7.9 times higher than that of a Eu³⁺ complex bearing triphenylphosphine oxide. This is mainly due to the heavy-atom effect of arsenic, which was supported by evaluating the photoluminescence spectra of their corresponding Gd³⁺ complexes.