Ferroelectric liquid crystals with extremely wide SmC* phase range

被引：0

作者：

Hamplová, V ^{[1
]}

Kaspar, M ^{[1
]}

Novotná, V ^{[1
]}

Glogarová, M ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic

来源：

FERROELECTRICS | 2002年 / 276卷

关键词：

ferroelectric liquid crystals; four aromatic rings; dielectric properties;

D O I：

10.1080/713716431

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New series of ferroelectric liquid crystals containing four aromatic rings in the mesogenic core and the alkyllactate unit as a chiral centre were synthesized and investigated. All compounds have the SmA phase and the chiral SmC* phase in a very broad temperature range around 100 K. For the chlorine substituted materials the spontaneous polarization reaches the values of 110 - 150 nC/cm(2) at temperatures 50 K below the phase transition to the SmC* phase in contrast to the value of 60 nC/cm(2) for non-substituted compound. Similarly, increase due to the Cl substitution has been observed also for the values of spontaneous tilt angle.

引用

页码：45 / 54

页数：10

共 7 条

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