本项目以微流控液滴技术构筑可用于光催化领域并具有分子结构形貌的胶体光子晶体微珠为目标，以原位生成法制备功能无机纳米粒子和单分散核壳型聚合物微球以及两者间的精密复合入手，通过设计微流控设备中微通道结构以及调节微流体的流动行为，发展微流体液滴技术构筑分子型胶体光子晶体复合微珠材料的新方法，考察微型通道结构、外加力场等因素与微珠构型间的影响关系。揭示无机纳米粒子在聚合物微球壳层中的生成机理，无机纳米粒子与亚微米聚合物微球两结构单元间的复合过程与宏观材料性能的演变规律。探索负载无机纳米粒子的聚合物微球对胶体光子晶体微珠材料的折射率、晶体参数等性能的变化规律及成因机理。利用无机纳米粒子的小尺寸效应与光子晶体的带隙结构的相互协调机制，开发胶体光子晶体微珠在光催化领域的新应用。

This project aims at the creation of molecular-analogue colloidal photonic crystal (CPC) supraballs with photocatalytic function via emerging droplet-based microfluidic technique. First of all, it starts from the in-situ synthesis of functional inorganic nanoparticles and monodispersed core-shell polymeric microspheres as well as their precise combination. Then, the micro-channel architectures in microfluidic devices are tailored and the microfluidic flow behavior is manipulated to develop new route to microfluidic-constructed molecular-analogue fluorescent CPC supraball material, thus investigating the influence of micro-channel architectures and external fields on configuration of supraballs. Through these efforts, we will reveal the formation mechanism of inorganic nanoparticles in the shell of polymeric microspheres and the coupling process of two building blocks, i.e. QDs and polymeric microspheres, and the evolution rule of material performance macroscopically as well. Additionally, we will explore the impact of polymeric microspheres loaded with inorganic nanoparticles on refractive index and lattice parameters of CPC supraballs and also its intrinsic generation mechanism. More importantly, taking advantages of the intercoordination between small dimension effects of inorganic nanoparticles and band gap structures of photonic crystals, CPC supraball materials are capable of being applied in new photocatalytic field.