Nitroazo and nitrostilbene dyes for low molar mass organosiloxane liquid crystal dye guest host ferroelectric displays
Nitroazo and nitrostilbene dyes for low molar mass organosiloxane liquid crystal dye guest host ferroelectric displays
复制标题
用于低摩尔质量有机硅氧烷液晶染料客体铁电显示器的硝基偶氮和硝基芪染料
DOI：
10.1080/00150190008008009
复制
发表时间：
2000
期刊：
影响因子：
0.8
通讯作者：
H. Coles
中科院分区：
文献类型：
--
作者：
D. E. Shoosmith;A. M. Remnant;S. Perkins;H. Coles
摘要：在本文中，我们展示了添加单体和二聚偶氮和二苯乙烯有机硅氧烷染料对铁电液晶（FLC）器件的影响。这些染料显示出 SmA 相，在我们的苯甲酸盐主体中在所有浓度下均可混溶。主体液晶和染料的简单混合使我们能够控制自发偏振、倾斜角或相位范围。这允许从双折射器件到单偏振器染料客主器件的应用。诱导的 SmA* 相显示出显着的电动效应。染料添加的效果有利地改变相序，从而更容易对准和室温铁电性。双偶氮染料产生反铁电相，我们将其归因于模板效应。
Abstract In this paper we show the effect of addition of monomeric and bimeric azo and stilbene organosiloxane dyes to ferroelectric liquid crystal (FLC) devices. These dyes show SmA phases, which are miscible at all concentrations, in our benzoate host. Simple mixing of host liquid crystal and dye allow us to control the spontaneous polarisation, tilt angle or phase range. This allows applications from birefringent devices to single polariser dye guest host devices. The SmA* phases induced show marked electroclinic effects. The effect of dye addition favourably alters the phase sequence allowing easier alignment and room temperature ferroelectricity. The bi-azo dye produced an antiferroelectic phase, which we attribute to a templating effect.