Sign control of circularly polarized luminescence by substituent domino effect in binaphthyl-Eu(III) organometallic luminophores

被引：3

作者：

Kaji, Daiki ^{[1
]}

Kitayama, Masumi ^{[2
]}

Hara, Nobuyuki ^{[1
]}

Yoshida, Keishiro ^{[2
]}

Wakabayashi, Sae ^{[2
]}

Shizuma, Motohiro ^{[3
]}

Tsubaki, Kazunori ^{[2
]}

Imai, Yoshitane ^{[1
]}

机构：

[1] Kindai Univ, Fac Sci & Engn, Dept Appl Chem, 3-4-1 Kowakae, Higashiosaka, Osaka 5778502, Japan

[2] Kyoto Prefectural Univ, Grad Sch Life & Environm Sci, Sakyo Ku, Kyoto 6068522, Japan

[3] Osaka Res Inst Ind Sci & Technol, Dept Biochem, Joto Ku, 1-6-50 Morinomiya, Osaka 5368553, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2020年 / 397卷 / 397期

基金：

日本学术振兴会;

关键词：

Binaphthyl; Chiral; Circularly polarized luminescence (CPL); Europium (Eu); Fluorescence; CORRELATED MOLECULAR CALCULATIONS; CHIRAL LANTHANIDE COMPLEXES; GAUSSIAN-BASIS SETS; EU(III)(HFA)(3); EMISSION; CPL; EU;

D O I：

10.1016/j.jphotochem.2020.112490

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The circularly polarized luminescence (CPL) signs of Eu(III) luminophores coordinated to axially chiral binaphthyl derivatives carrying acetic acid residues [(R,R,R)-4] were inverted compared to those bearing compounds (R)-1-3 by inserting bulky naphthalene units into the binaphthyl backbone. The suitable steric difference between the phenyl group and the highly bulky naphthalene group on the binaphthyl backbone causes a chiral coordination change for all ligands on Eu(III). This substituent domino effect on the 1,1,1,5,5,5-hexafluoropentane-1,4-dione (hfa) ligands on Eu(III) caused by the bulky naphthyl group on the binaphthyl ligand causes the apparent change of the CPL sign in the photo-excited state, although (R)-1-3/Eu and (R,R,R)-4/Eu exhibited the same circular dichroism sign in the ground state.

引用

页数：6

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