SYNTHESIS AND MESOMORPHIC PROPERTIES OF FERROELECTRIC LIQUID-CRYSTALS BEARING 5-PHENYLPYRIMIDINE RINGS
SYNTHESIS AND MESOMORPHIC PROPERTIES OF FERROELECTRIC LIQUID-CRYSTALS BEARING 5-PHENYLPYRIMIDINE RINGS
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DOI：
10.1080/00268949108037726
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发表时间：
1991-01-01
影响因子：
0.7
通讯作者：
TERAJI, T
中科院分区：
文献类型：
--
作者：
SUGITA, SI;TAKENO, H;TERAJI, T
合成了17个手性5-苯基嘧啶的同源物，并用DSC和偏光显微镜评价了它们的亚形态性质。所研究的所有化合物在5-苯基嘧啶核心的p、p位置上都具有烷基或烷氧基侧链，其中一个末端链上具有光学活性的碳原子。大部分化合物具有亚纯性，其中5个化合物具有手性近晶C相。我们还测量了一些化合物的自发极化（Ps）和光响应时间（τ），发现自发极化（Ps）的幅度非常小，而光响应时间（τ）非常快。
Seventeen homologs of chiral 5-phenylpyrimidines were synthesized and their mesomorphic properties were evaluated with a DSC and a polarizing microscope. All compounds studied possessed an alkyl or alkoxyl side chain at thep, p′position of the 5-phenylpyrimidine core and an optically active carbon atom at one of the terminal chains. Most of the series exhibited mesomorphic properties and five of them showed a chiral smectic C phase. We also measured some compounds for spontaneous polarizations (Ps) and optical response times (τ), and found that the magnitudes of the spontaneous polarizations (Ps) were very small and the optical response times (τ) were very fast.