Charge-transfer excited states of π- and 4f-orbitals for development of luminescent Eu(III) complexes

Yuichi Kitagawa; Pedro Paulo Ferreira da Rosa; Yasuchika Hasegawa

doi:10.1039/d1dt03019a

Charge-transfer excited states of π- and 4f-orbitals for development of luminescent Eu(III) complexes

Dalton Trans. 2021 Nov 2;50(42):14978-14984. doi: 10.1039/d1dt03019a.

Authors

Yuichi Kitagawa^{1

2}, Pedro Paulo Ferreira da Rosa³, Yasuchika Hasegawa^{1

2}

Affiliations

¹ Faculty of Engineering, Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Sapporo, Hokkaido, 060-8628, Japan.
² Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita-21 Jo, Nishi-10 chome, Sapporo, Hokkaido 001-0021, Japan.
³ Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita-13 Jo, Nishi-8 Chome, Sapporo, Hokkaido, 060-8628, Japan.

PMID: 34610080
DOI: 10.1039/d1dt03019a

Abstract

Transition metal complexes provide photofunctional properties through the charge transfer excited states of their metal ion and organic ligand components. Recently, there are increasing reports on the charge transfer excited states of the ligand (π)- and 4f-orbitals of lanthanide complexes, where the latter are shielded by filled 5s² and 5p⁶ orbitals. This area of research is relatively unestablished; thus, the study of photo-excited organic-lanthanide charge transfer would lead to the construction of next-generation photofunctional metal complexes. In this review, we summarize the latest research progress in photofunctional materials using the charge transfer excited states of lanthanide complexes, and discuss the photophysical/theoretical analyses of these charge transfer excited states.

Publication types

Review