Mesomorphism and Unusual Multiple Melting Behavior via Smectic E Phase in p-n-Alkoxybiphenylbutane-1,3-dione
Mesomorphism and Unusual Multiple Melting Behavior via Smectic E Phase in p-n-Alkoxybiphenylbutane-1,3-dione
复制标题
对-正烷氧基联苯丁烷-1,3-二酮中近晶E相的介晶现象和异常多重熔融行为
DOI：
10.1080/00268949108030894
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发表时间：
1991
影响因子：
0.7
通讯作者：
I. Yamamoto
中科院分区：
文献类型：
--
作者：
K. Ohta;O. Takenaka;H. Hasebe;Y. Morizumi;T. Fujimoto;I. Yamamoto
合成并表征了4-正烷氧基-4 ′-乙酰基联苯（CnO-A：8 × 12，16，18）和对-正烷氧基联苯-1，3-丁二酮（CnO-Lig：8 × 12，16，18）。CnO-A（n = 8 ~ 12，16）衍生物具有近晶E型中间相。CnO-Lig（n = 8、12、16、18）具有近晶E和近晶A两种中间相。有趣的是，每个CnO-Lig（n = 8 - 12）化合物具有三种结晶多晶型物。CnO-Lig衍生物（n = 8，10和12）通过近晶E中间相表现出两种类型的双熔融行为。n = 9和11的CnO-Lig衍生物通过近晶E中间相表现出三重熔融行为。
Abstract 4-n-Alkoxy-4′-acetylbiphenyl(C n O-A: 8 ∼ 12, 16, 18) and p-n-alkoxybiphenylbutane-1,3-dione(CnO- Lig: 8 ∼ 12,16, 18) have been synthesized and characterized. The CnO-A (n = 8 ∼ 12, 16) derivatives have a smectic E mesophase. The CnO-Lig(n = 8 ∼ 12, 16, 18) have two mesophases, smectic E and smectic A mesophases. Interestingly, each of the CnO-Lig(n = 8 ∼ 12) compounds has three crystalline polymorphs. The CnO-Lig derivatives for n = 8, 10, and 12 show two types of double melting behavior via the smectic E mesophase. The CnO-Lig derivatives for n = 9 and 11 exhibit triple melting behavior via the smectic E mesophase.