Premium
Remarkable Effects of External Magnetic Field on Circularly Polarized Luminescence of Eu III (hfa) 3 with Phosphine Chirality
Author(s) -
Mishima Kohei,
Kaji Daiki,
Fujiki Michiya,
Imai Yoshitane
Publication year - 2021
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.202100280
Subject(s) - chirality (physics) , diastereomer , luminescence , enantiomer , circular polarization , planar chirality , chemistry , point reflection , crystallography , magnetic field , stereochemistry , physics , condensed matter physics , enantioselective synthesis , symmetry breaking , optics , chiral symmetry breaking , quantum mechanics , catalysis , nambu–jona lasinio model , biochemistry
Herein, magnetic circularly polarized luminescence (CPL) (MCPL) spectroscopy was conducted to analyze an Eu III (hfa) 3 complex with three chiral P III ‐ligands. Resultantly, ( R )‐chirality luminophores with S‐up orientation and ( S )‐chirality luminophores with N‐up orientation were observed to possess symmetrical mirror image spectra, i. e., they were enantiomers. Similarly, the ( R )‐chirality luminophores with N‐up orientation and the ( S )‐chirality luminophores with S‐up orientation were also enantiomers. Contrarily, ( R )‐S‐up and ( S )‐S‐up were diastereomers and did not possess a mirror‐image relationship. Likewise, ( R )‐N‐up and ( S )‐N‐up were diastereomers. The J ‐dependency of g MCPL and g CPL datasets suggested that the N‐up/S‐up external magnetic field, with the aid of chiral P III ‐ligands, increased the g MCPL values by two‐ to sixteen‐fold and modulated the g MCPL signs at J =1–4. Additionally, the origins of the nonideal mirror‐symmetric CPL and MCPL spectral characteristics of Eu III (hfa) 3 with three chiral P III ‐ligands were discussed in terms of parity (space‐inversion, P )‐symmetry, time‐reversal ( T )‐symmetry, and PT ‐symmetry laws.