Molecular Design Guidelines for Large Magnetic Circular Dichroism Intensities in Lanthanide Complexes

Yuichi Kitagawa; Satoshi Wada; Kei Yanagisawa; Takayuki Nakanishi; Koji Fushimi; Yasuchika Hasegawa

doi:10.1002/cphc.201501124

Molecular Design Guidelines for Large Magnetic Circular Dichroism Intensities in Lanthanide Complexes

Chemphyschem. 2016 Mar 16;17(6):845-9. doi: 10.1002/cphc.201501124. Epub 2016 Jan 20.

Authors

Yuichi Kitagawa¹, Satoshi Wada², Kei Yanagisawa², Takayuki Nakanishi², Koji Fushimi², Yasuchika Hasegawa³

Affiliations

¹ Faculty of Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan. y-kitagawa@eng.hokudai.ac.jp.
² Faculty of Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.
³ Faculty of Engineering, Hokkaido University, North-13 West-8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan. hasegaway@eng.hokudai.ac.jp.

PMID: 26789658
DOI: 10.1002/cphc.201501124

Abstract

Magneto optical devices based on the Faraday effects of lanthanide ion have attracted much attention. Recently, large Faraday effects were found in nano-sized multinuclear lanthanide complexes. In this study, the Faraday rotation intensities were estimated for lanthanide nitrates [Ln(III) (NO3 )3 ⋅n H2 O: Ln=Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm) and Eu(III) complexes with β-diketone ligands, using magnetic circular dichroism. Eu ions exhibit the largest Faraday rotation intensity for (7) F0 →(5) D1 transitions, and high-symmetry fields around the Eu ions induce larger Faraday effects. The molecular design for the enhancement of Faraday effects in lanthanide complexes is discussed.

Keywords: circular dichroism; crystal fields; europium; f orbitals; lanthanides.