Dynamic Interfacial Regulation by Photodeformable Azobenzene-Containing Liquid Crystal Polymer Micro/Nanostructures
Dynamic Interfacial Regulation by Photodeformable Azobenzene-Containing Liquid Crystal Polymer Micro/Nanostructures
复制标题
光致变形含偶氮苯液晶聚合物微/纳米结构的动态界面调控
DOI：
10.1021/acs.langmuir.0c00582
复制
发表时间：
2020
期刊：
影响因子：
3.9
通讯作者：
Yanlei Yu
中科院分区：
文献类型：
--
作者：
Chongyu Zhu;Yao Lu;Jiahao Sun;Yanlei Yu
光响应性材料提供了在外部刺激下对其化学或物理性质的局部、时间和远程控制，为界面调节提供了新的工具。其中，可光变形的偶氮苯类液晶聚合物(azo-LCP)由于可以加工成各种微/纳米结构，并且可以通过光的化学和/或形态变化来可逆地调节界面性质，从而提供有效的动态界面调节，因此受到越来越多的关注。在这篇专题文章中，我们重点介绍了通过由可光变形的偶氮苯液晶聚合物(azo-LCP)制成的微/纳米结构来动态调节不同界面性质方面的里程碑。我们从材料和加工工艺两个方面介绍了不同的偶氮液晶微纳结构的制备方法，揭示了介元取向对界面动态调节的重要性。通过介绍我们最近开发的具有良好机械和光响应性能的线性偶氮液晶聚合物(azo-LLCP)，我们讨论了在二维和三维(2D/3D)微/纳米结构的动态光调节方面调节其相关界面性质的挑战和机会。我们还展望了可光变形微/纳米结构在微流体、生物传感器和纳米治疗等方面的先进应用。
Photoresponsive materials offer local, temporal, and remote control over their chemical or physical properties under external stimuli, giving new tools for interfacial regulation. Among all, photodeformable azobenzene-containing liquid crystal polymers (azo-LCPs) have received increasing attention because they can be processed into various micro/nanostructures and have the potential to reversibly tune the interfacial properties through chemical and/or morphological variation by light, providing effective dynamic interface regulation. In this feature article, we highlight the milestones in the dynamic regulation of different interfacial properties through micro/nanostructures made of photodeformable azobenzene-containing liquid crystal polymers (azo-LCPs). We describe the preparation of different azo-LCP micro/nanostructures from the aspects of materials and processing techniques and reveal the importance of mesogen orientation toward dynamic interfacial regulation. By introducing our recently developed linear azo-LCP (azo-LLCP) with good mechanical and photoresponsive performances, we discuss the challenge and opportunity with respect to the dynamic light regulation of two- and three-dimensional (2D/3D) micro/nanostructures to tune their related interfacial properties. We have also given our expectation toward exploring photodeformable micro/nanostructures for advanced applications such as in microfluidics, biosensors, and nanotherapeutics.