In 2-(2-alkenoyloxy)-5-alkoxytropones, showing a monotropic smectic A phase, the introduction of a double bond lowers the melting and clearing points as well as the recrystallization temperatures.
在显示单向近晶 A 相的 2-(2-烯酰氧基)-5-烷氧基托酮中,双键的引入降低了熔点和清光点以及重结晶温度。
Synthesis of 2-(alkanoyloxy)-5-alkoxytropones. Novel monocyclic rod-type liquid crystals
Kida, Katsuhiko; Mori, Akira; Takeshita, Hitoshi, Molecular Crystals and Liquid Crystals (1969-1991), 1991, vol. 199, p. 387 - 391
作者:Kida, Katsuhiko、Mori, Akira、Takeshita, Hitoshi
DOI:——
日期:——
New Twin-Type Troponoid Liquid Crystals with a Smectic C Phase
作者:Akira Mori、Manabu Takemoto、Volkmar Vill
DOI:10.1246/cl.1998.617
日期:1998.7
Twin-type troponoid liquid crystals show a monotropic smectic C phase while the corresponding benzenoids are non-mesogenic. The corresponding troponoid monomers, show a monotropic smectic A phase, could form a head-to-tail alignment. In the twins, molecules have to shift to form a head-to-tail alignment since the dipole moment of the two tropolone parts directs oppositely.
孪晶型类滋养层液晶显示出单向平滑的 C 相,而相应的苯并类化合物则是非平滑的。相应的类滋养层单体显示出单向平展的 A 相,可以形成头尾排列。在孪晶中,分子必须移动才能形成头尾对齐,因为两个滋养甾酮部分的偶极矩方向相反。