Heterocyclic esters exhibiting frustrated liquid crystal phases

Heterocyclic esters exhibiting frustrated liquid crystal phases
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杂环酯表现出受挫液晶相

DOI：
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发表时间：
1997
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影响因子：
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通讯作者：
J. T. Mills
J. T. Mills
中科院分区：
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文献类型：
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作者：
A. Seed;M. Hird;P. Styring;H. Gleeson;J. T. Mills

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摘要合成了一系列以硒醚、噻吩和呋喃为结构单元的新型杂环酯，并合成了苯基类似物。除了最小线性呋喃类似物之外的所有材料都是介晶的，并且表现出SA、SC*、SC* 铁和SC* 反液晶相。此外，硒化物材料表现出更高有序的反铁电相，其被指定为反铁电近晶I（SI* 反）相，并且在此之下生成SI* 相。报道了该材料的合成、介晶行为和物理性质。
Abstract A series of novel heterocyclic esters has been prepared based on selenophene, thiophene and furan units; for comparison the parent, phenyl analogue was also prepared. All the materials except the least linear furan analogue are mesogenic and exhibit the SA, SC*, SC*ferri and SC*anti liquid crystalline phases. In addition, the selenophene material exhibits a higher ordered antiferroelectric phase which has been designated the antiferroelectric smectic I (SI*anti) phase and below this the SI* phase was generated. The synthesis, mesomorphic behaviour and physical properties of the materials are reported.