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Symmetry 2018, 10(5), 147; https://doi.org/10.3390/sym10050147

Polarized Light-Induced Molecular Orientation Control of Rigid Schiff Base Ni(II), Cu(II), and Zn(II) Binuclear Complexes as Polymer Composites

Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Tokyo 162-8601, Japan
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Received: 15 March 2018 / Revised: 13 April 2018 / Accepted: 23 April 2018 / Published: 7 May 2018
(This article belongs to the Special Issue Symmetry in Coordination Chemistry)
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Abstract

We have investigated linearly polarized UV light-induced molecular orientation due to Weigert effect of composite materials of new six binuclear nickel(II), copper(II), and zinc(II) complexes of two rigid Schiff base ring ligands (L1 and L2) composite materials with methyl orange (MO), an azo-dye, in polyvinylalchol (PVA) cast films. To compare the degree of molecular orientation, two ligands, namely flexible aliphatic cyclohexane (ML1: NiL1, CuL1, ZnL1) and rigid aromatic (ML2: NiL2, CuL2, ZnL2), were synthesized using amine moiety. We have also characterized these complexes by means of elemental analysis, IR, and UV-vis spectra, single crystal or powder X-ray diffraction (XRD) analysis, and so on. Composite materials of ML1 or ML2+MO+PVA were also prepared to separately disperse the solutes in a polymer matrix. For any metal complexes, optical anisotropy (represented as the R parameters) of ML2+MO+PVA was larger than ML1+MO+PVA because of the rigidness of the ligands. View Full-Text
Keywords: Schiff base; binuclear complex; nickel; copper; zinc; polarized light; PVA; methyl orange; Weigert effect Schiff base; binuclear complex; nickel; copper; zinc; polarized light; PVA; methyl orange; Weigert effect
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Nakatori, H.; Haraguchi, T.; Akitsu, T. Polarized Light-Induced Molecular Orientation Control of Rigid Schiff Base Ni(II), Cu(II), and Zn(II) Binuclear Complexes as Polymer Composites. Symmetry 2018, 10, 147.

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