Luminescence and Circularly Polarized Luminescence of Mononuclear and Binuclear Chromium(III) L-Alaninato Complexes.
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概要
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Luminescence and circularly polarized luminescence (CPL) spectra were investigated at low temperatures in order to clarify the chiroptical and electronic structures of monomeric and dimeric chromium(III) alaninato complexes. In the monomeric complexes, [Cr(L-(or D-)ala)<SUB>3</SUB>]·H<SUB>2</SUB>O, R<SUB>1</SUB> and R<SUB>2</SUB> lines of opposite spectral signs were found in the CPL spectra. The signs and relative intensities of the peaks were found to be comparable with circular dichroism (CD) spectra by employing theoretical arguments based on a strong crystal field theory. In the case of hydroxo-bridged dimeric complexes, [Cr<SUB>2</SUB>(OH)<SUB>2</SUB>(L-(or D-)ala)<SUB>4</SUB>]·3H<SUB>2</SUB>O, although the luminescence spectra of exchange-coupled pair states were clearly observed with a deduction of reasonable exchange interaction parameters, the CPL spectral components were not discernible because of the <I>meso</I>-type structure.
著者
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MORITA Makoto
Department of Industrial Chemistry, Faculty of Engineering, Seikei University
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Tsubomura Taro
Department of Industrial Chemistry, Faculty of Engineering, Seikei University
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MORITA Makoto
Department of Agricultural Chemistry, The University of Tokyo
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Ohkouchi Iwao
Department of Industrial Chemistry, Faculty of Engineering, Seikei University
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