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The optical property and the molecular packing structure of achiral bent-rod-shaped liquid crystalline compound 1 possessing an amide group and a flexible spacer were investigated by polarized optical microscopy (POM), circular dichroism (CD) spectroscopy, and X-ray diffraction (XRD). The molecules generated highly ordered liquid crystal phases by lateral intermolecular hydrogen bonds. The cubic phase observed in this study showed a chirality in CD spectroscopy even without the aid of a dopant. Further, its chirality was enhanced by doping with chiral dopant compound 4 . The origin of the spontaneous chiral induction was postulated, and the packing structure in the aggregates was proposed.
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Kajitani et al. (2005) studied this question.
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