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

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

Index: ChemPhysChem 17 , 845-9, (2016)

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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. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.