偶氮聚合物是一类光响应性新材料，Janus粒子（JPs）为非中心对称结构新型胶体粒子。具有光致形变功能的偶氮聚合物JPs是结合上述领域的全新研究方向。本项目以具有光致形变功能的偶氮聚合物JPs为研究对象，拟深入研究聚合物和JPs结构的制备、调控、光致形变机理、结构性能关系和应用。重点研究利用悬浮液（乳液）法和相反转法制备偶氮聚合物JPs的优化条件。致力阐明偶氮聚合物和非偶氮聚合物两种组分在受限空间发生相分离的微观机理，通过偶氮聚合物和其它聚合物在受限空间的自组装，得到各种结构和性能可调的JPs。阐明各种的相互作用对相分离过程和JPs结构形成的影响规律。掌握各种光辐照方式（非均匀光场、均匀光场、不同偏振态等）对偶氮聚合物JPs形变的影响规律。建立各种新型偶氮聚合物JPs的制备方法，拓展功能性，并探索其应用。研究此类新型的Janus粒子具有重要的科学研究价值和应用前景。

Azo polymers are well-known for their interesting properties as photoresponsive materials. Janus particles (JPs), named after the roman god Janus, are generally referred to noncentrosymmetric nano/micrometer particles. On the basis of the concepts of JPs, different kinds of materials with various interesting properties can be incorporated into one single particle to realize novel functionalities. As a new research frontier, azo polymer JPs can integrate photoresponisve functions of azo polymers with the unique symmetry-breaking architecture of JPs. This proposed project plans to carry out the systematic study on azo polymer JPs from the preparation of polymers to fabrication of JPs, structure control, photoinduced deformation, multi-functionalities, and possible applications. The study will be dedicated to understand the phase separation of azo polymers and the other polymers in confined volumes in order to establish practical methods. Through self-assembly of azo polymers and other types of polymers in confined volumes, i.e., via phase separation in dispersion (emulsion) and phase inversion approaches, the project will fabricate various JPs with controllable structures and properties. The proposed project plan to fully elucidate the effects of the mutual interactions, restricted nucleation and growth in the systems on the structure formation, condition adjustments and optimization. Different light irradiation conditions (uniform, non-uniform and varied polarization states) will be explored to achieve unique types of symmetry-breaking deformations. Based on the results, new types of JPs with multi-functionalities are proposed to be developed for future applications. This study on the novel types of JPs is valuable for both fundamental understanding and smart photofabrication in micrometer scale.