Photoalignment of Nanostructured Liquid-Crystalline System for Emitting Devices

本研究探索了不同荧光染料掺杂的液晶体系的光致重取向行为，以开发具有精确分子取向的光致电子体系。在荧光染料中，一些大分子长度的香豆素类化合物被发现能够触发LC体系的光诱导重定向。此外，在光照射下，香豆素类化合物与LC对齐的稳定性比与低聚硫吩衍生物对齐的稳定性高。

In this study, photoinduced reorientation behavior of liquid-crystalline systems doped with various fluorescent dyes were explored to develop pi-electron system with precise molecular alignment by light. Among the fluorescent dyes, some coumarin derivatives with long molecular length were found to act as a trigger for the photoinduced reorientation of LC system. Moreover, stability of LC alignment with coumarins during photo irradiation is higher than that with conventional oligothiophene derivatives.