Utilizing sequential layer-by-layer (LBL) coating and subsequent photopolymerization, we developed circular-polarizing and free-standing mirrors with a broad reflection bandwidth. Photopolymerizable cholesteric liquid crystal (CLC) paints were first prepared by considering the intrinsic chirality and the coating viscoelasticity. The polymer-stabilized nanostructures had finely tuned helical pitches that selectively reflected light over the entire visible wavelength range. The CLC films exhibited excellent thermomechanical properties and chemical stabilities, which enabled the preparation of patterned optical objects at macroscopic dimensions. The LBL coating and photopolymerization of the CLC paints demonstrated here can provide a simple solution for manufacturing flexible photonic devices with large areas at low cost.

利用顺序的逐层（LBL）涂层和随后的光聚合作用，我们开发了具有宽反射带宽的圆偏振镜和独立式反射镜。首先考虑到本征手性和涂料的粘弹性，制备了可光聚合的胆甾型液晶（CLC）涂料。聚合物稳定的纳米结构具有微调的螺距，可以选择性地在整个可见波长范围内反射光。CLC膜表现出出色的热机械性能和化学稳定性，从而可以制备宏观尺寸的带图案的光学物体。此处演示的CLC涂料的LBL涂层和光聚合可以为低成本制造大面积的柔性光子器件提供简单的解决方案。