Chien Chih-Chieh, Liu Jui-Hsiang
Department of Chemical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan.
Macromol Rapid Commun. 2014 Jul;35(13):1185-90. doi: 10.1002/marc.201400009. Epub 2014 Apr 9.
Recently, extensive investigations are carried out on design of highly controlled architecture and morphology by polymerizing the monomers doped in well-defined liquid crystalline materials, followed by removal of the template liquid crystal molecules. In this communication, a photonic structure used as a new photonic bandgap (PBG) material is developed by imprinting helical structures on polymer matrices through multiple photocrosslinking processes in an induced chiral nematic mesophase using flexible polyethylene terephthalate (PET) films as substrates. The tuning properties of the reflection band of the imprinted cell are achieved using an uniaxial thermo-stretching equipment. Furthermore, refilling of isotropic materials into the imprinted cells tune the reflection light wavelength leads to the change of color.
最近，人们通过聚合掺杂在明确液晶材料中的单体，随后去除模板液晶分子，对高度可控的结构和形态设计进行了广泛研究。在本通讯中，以柔性聚对苯二甲酸乙二酯（PET）薄膜为基材，通过在诱导手性向列中间相中进行多次光交联过程，在聚合物基质上压印螺旋结构，从而开发出一种用作新型光子带隙（PBG）材料的光子结构。使用单轴热拉伸设备实现了压印单元反射带的调谐特性。此外，向压印单元中重新填充各向同性材料可调节反射光波长，进而导致颜色变化。
