Title: Light-Switchable Behavior of a Microarray of Azobenzene Liquid Crystal Polymer Induced by Photodeformation

Author: Zeng Yan, Xinming Ji, Wei Wu, Jia Wei, Yanlei Yu*

Journal: Macromol. Rapid Commun., 2012, 33(16), 1362–1367. (Cover Page)

Abstract:

A microarray with a period of about 1 μm was fabricated from a crosslinked liquid crystal polymer (CLCP) containing azobenzene groups by using the replica molding technique. In accordance with the photoinduced deformation of the CLCP induced by the photoisomerization of the azobenzene groups, on-off switch behavior on the reflection spectra of the microarray was observed by alternate irradiation with UV–Vis light. The reversible switch behavior indicates that the azobenzene CLCP microarray has potential applications in optical actuators.

论文链接：https://onlinelibrary.wiley.com/doi/full/10.1002/marc.201200303

PDF下载：Light-Switchable Behavior of a Microarray of Azobenzene Liquid Crystal Polymer Induced by Photodeformation.pdf

本研究利用复型技术，从含有偶氮苯基团的交联液晶聚合物(CLCP)出发，制备了周期约为1 μm的二维光响应微阵列。由于偶氮苯基团的光致异构化引起了CLCP柱的变形，CLCP微阵列在紫外-可见光的交替照射下表现出反射光谱强度的可逆变化行为。反射光谱强度越高说明光越不能通过CLCP微阵列，因此反射光谱强度的可逆变化可以用来表征CLCP微阵列的“开关”行为。本研究表明偶氮苯CLCP微阵列在光学执行器方面具有潜在的应用前景。