Stabilization of blue phases by hydrogen-bonded bent-shaped and T-shaped molecules featuring a branched terminal group
Stabilization of blue phases by hydrogen-bonded bent-shaped and T-shaped molecules featuring a branched terminal group
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DOI：
10.1039/c3sm51677f
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发表时间：
2013-10
期刊：
影响因子：
3.4
通讯作者：
Yang Shi;Xinwei Wang;Jie Wei;Huai Yang;Jinbao Guo
中科院分区：
文献类型：
--
作者：
Yang Shi;Xinwei Wang;Jie Wei;Huai Yang;Jinbao Guo
这项研究首次描述了新型氢键（H键合）弯曲形和T形组件（HBA）的液晶蓝相（BP）的稳定性。组装不同种类的氢键弯曲型和T型分子，然后用于拓宽液晶（LC）样品的BP温度范围。结果表明，BP的温度范围受HBA掺杂剂的影响显着，其中最宽的BP温度范围为15.1℃。此外，BP的较低温度非常接近室温，这有利于BP在液晶显示器中的应用。此外，根据实验分析和分子模拟，弯曲型和T型分子稳定BP的物理机制主要与分子几何形状有关，而不依赖于液晶相。本研究从分子设计的角度开发了一种新的、简便的策略来扩大BP温度范围。
The stabilization of liquid crystalline blue phases (BPs) from novel hydrogen-bonded (H-bonded) bent-shaped and T-shaped assemblies (HBAs) has been described for the first time in this study. Different kinds of H-bonded bent-shaped and T-shaped molecules were assembled, and then used to broaden the BP temperature range of liquid crystal (LC) samples. The results demonstrate that the temperature range of BPs is significantly influenced by HBA dopants, in which the widest BP temperature range was 15.1 °C. Moreover, the lower temperature of BPs is very close to room temperature, which is of benefit to the application of BPs in LC displays. Additionally, according to the experimental analysis and molecular simulations, the physical mechanism of the BP stabilization by bent-shaped and T-shaped molecules is mainly related to the molecular geometry and is not dependent on the LC phase. This study has developed a new and facile strategy to widen the BP temperature range from the aspect of the molecular design.