Chromonic mesophases : Lyotropic liquid crystals
Chromonic mesophases : Lyotropic liquid crystals
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DOI：
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发表时间：
2003
影响因子：
8.9
通讯作者：
J. Lydon
中科院分区：
文献类型：
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作者：
J. Lydon
在过去的10年里，人们越来越接受慢相的概念，并越来越广泛地认识到它们形成了一个定义良好的溶致液晶相家族，具有几乎在各个方面与传统两亲体不同的一系列性质。新的同色性化合物不断出现，同色系的新技术用途正在积极探索。最近有希望的研究包括合成一种慢性染料，C.I.直接蓝67，它具有高阶参数的N相，可以干燥得到取向良好的固体膜。当在光对准衬底的“命令表面”干燥时，可以产生高度图案化的薄膜。本文探讨了在补偿板的构造中使用慢相位来改善扭曲向列显示的观看特性。虽然这项技术目前的形式可能不适合商业开发，但设备的成功是重要的。目前的研究表明，在1:1的CPI混合物中提高热致性盘状中间相的温度范围的方法可能会改善慢性染料的配方。据预测，将慢相技术与现有的生化分析技术相结合，将产生新一代的医学诊断试验。
Over the last 10 years, there has been a growing acceptance of the concept of chromonic phases and a wider recognition that they form a well-defined family of lyotropic liquid crystalline phases, with a package of properties distinct in almost every aspect, from those of conventional amphiphiles. New chromonogenic compounds have appeared and new technological uses for chromonic systems are being actively explored. Recent promising investigations include the synthesis of a chromonic dye, C.I. Direct Blue 67, which has an N phase of high order parameter and which can be dried down to give well-oriented films of solid. When dried down on a 'command surface' of photoaligned substrate this can produce a highly patterned film. The use of chromonic phases in the construction of compensating plates for improving the viewing characteristics of twisted nematic displays has been explored. Although this technology may not be suitable for commercially exploitation in its present form, the success of the devices is significant. It is suggested that current studies of the way in which the temperature range of thermotropic discotic mesophases is enhanced in 1:1 CPI mixtures may well lead to improved formulations for chromonic dyes. It is predicted that the marriage of chromonic phase technology with current biochemical analytical techniques will give rise to a new generation of medical diagnostic tests.