The Cholesteric Pitch and Its Temperature Dependence of Chiral Nematics Induced by Compounds Having 1-Methyl-Heptyloxy Group

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概要

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• The cholesteric pitch (P) and its temperature dependence (ΔP/ΔT) were studied for the chiral nematics induced by the compounds having 1-methyl-heptyloxy phenyl group. The ortho-substitution of methyl or halogen atoms to the 1 -methyl-heptyloxy phenyl group decreased P and increasedΔP/ΔT. An energy barriers for intra-chain rotation around chiral center of 1-methyl-heptyloxy phenyl group and a strength of nematic inter-molecular interaction were evaluated using an empirical molecular orbital calculating method. As the result, it was proposed that the conformational structure of 1-methyl-heptyloxy phenyl group predominantly controls P andΔP/ΔT for the present systems.

• 社団法人日本物理学会の論文
• 1994-09-15

著者

• Tanaka M

  Dep. Of Pathology St. Marianna Univ. School Of Medicine

• TANAKA Masami

  Research Center, Chisso Petrochemical Corporation

• Yamamoto Hitoshi

  Moriyama TS Center, Chisso Corporation

• Suisyu Takaaki

  Research Center, Chisso Petro Chemical Corporation

• Yano Shinichi

  Depertment of Chemistry, Faculty of Engineering, Gifu University

• Suisyu Takaaki

  Research Center Chisso Petro Chemical Corporation

• Tanaka Masami

  Research Center Chisso Petro Chemical Corporation

• Yamamoto Hitoshi

  Moriyama Ts Center Chisso Corporation

• Yano Shinichi

  Depertment Of Chemistry Faculty Of Engineering Gifu University

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• The Cholesteric Pitch and Its Temperature Dependence of Chiral Nematics Induced by Compounds Having 1-Methyl-Heptyloxy Group

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