Studies of Helical Aggregates of Molecules. II. The Sense of Twist in the Fibrous Aggregates from the Alkali Metal Soaps of Optically Active 12-Hydroxystearic Acid

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概要

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• Under an electron microscope, it was observed that the alkali metal soaps of 12-D(or L)-hydroxystearic acid separated out twisted fibers from various solutions. A symmetrical relationship regarding the sense of the twist was found between the soap fibers of the D-enantiomer and those of the L-enantiomer. In the case of the soap fibers of the D-enantiomer, the sense of twist was right-handed for the Li soap and left-handed for the Rb and Cs soaps. The Na- and the K- soap fibers produced both right-handed and left-handed fibers. A solvent effect with respect to the sense of twist was found for the fibers of the free acid and its Li soap. The cause of the twisting was discussed in connection with the structure and the growth process of the soap crystal.

• 公益社団法人 日本化学会の論文

著者

• Tachibana Taro

  Department Of Anatomy And Cell Biology Osaka University Medical School

• Kitazawa Shyoko

  Department of Chemistry, Ochanomizu University

• Takeno Hideko

  Department of Chemistry, Ochanomizu University

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