PB03 分子末端にラクトン環を持つ化合物の合成と液晶性II : Homogentisic acid γ-lactone誘導体(化学・材料)

概要

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LC compounds incorporating benzo [1, 3] -oxathiol-2-one or 3H-benzofuran-2-one at the terminal position were synthesized and their thermal properties were examined. The compounds exhibit nematic phase and/or smectic phase. In binary mixtures of 4-octyloxy-4'-cyanobiphenyl and 5- (3H-benzofuran-2-one) yl 4-nonyloxybenzoate, SmA phases are miscible in the whole region. Therefore, molecular arrangement of SmA phase of both compounds is assumed to be similar. On the other hand, nematic-isotropic transition temperature decreases with increasing molar concentration of 5- (3H-benzofuran-2-one) yl 4-nonyloxybenzoate. The effect of the terminal lactone group on mesomorphic properties will be discussed in terms of molecular structure and electrostatic properties.
日本液晶学会の論文
2003-10-14