キラル結晶とプロペラ状色素の旋光性研究にみる理解の深化

概要

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In 1919, Perucca reported anomalous optical rotator dispersion from chiral NaClO3 crystals that were colored by an equilibrium racemic mixture of a triarylmethane dye, and this chiroptical observation was consistent with a resolution of the propeller-shaped dye molecules by NaClO3 crystals. Which was regarded as the first report on enantioselevtie adsorption of a racemic mixture on surface of a chiral crystal. In those days, P- or M-configuration of the propeller-shaped triarylmethane dyes were not known, chiroptical observation of oriented chiral molecules on chiralinorganic crystals were investigated. Recently (in 2010), Kahr et al. reinvestigated the similar system by means of differential polarization imaging techniques and concluded that Peruccas observation was a convolution of linear and circular optical properties. In this essay, we appreciate the deepening understanding about this issue in view of historical as well as technical development.
2010-12-31