基于聚集诱导发光建筑块构筑的新型光功能材料的结构与性能研究

聚集诱导发光现象的发现为提高材料的发光效率提供了新途径，而有机构建单元的选择对材料的光电性能起着决定性的作用。本项目拟结合聚集诱导发光结构单元与多孔材料的特殊结构的各自优异特性，合成一系列基于聚集诱导发光单元的多孔结晶聚合物。利用AIE分子内旋转受限状态下独特的荧光增强特性，来提高这类材料的荧光量子效率。探索反应条件对所得聚合物结构的影响，研究不同反应类型、不同有机构筑单元构筑的聚合物的荧光发射波长、发射效率和发射寿命等性能，阐明有机构筑单元、过渡金属离子类型、配位方式、反应条件、聚合方式等因素对其性能的影响规律。基于AIE分子构筑的多孔聚合物材料具有良好的物理化学稳定性和较高的量子效率，符合目前光电领域对其光电性能的要求，在化学、生物传感以及医用成像等领域显示出广阔的应用前景，探索聚集诱导发光聚合物骨架的合成有着重要的科学意义和实用价值。

Found of aggregation induced emission (AIE) phenomenon provides a new way to improve the luminescence efficiency of the material, and the choice of of organic building blocks have a decisive impact on the photoelectric properties of the compounds. This approach will integrate the excellent properties from both aggregation induced emission materials and the special structure of the porous material, to synthesize a series porous crystalline polymers based on AIE unit. It is envisioned that the fluorescence quantum yields of the designed porous materials will enhance due to the restriction of intramolecular rotations of AIE-active building blocks. We will study the effect of reaction condions on the polymer structure, investigate the effect of different reaction types, fluorescence emission wavelength of different organic building blocks, emission efficiency and emission life performance, and clarify the influence of the organic building blocks, metal ion, coordination mode, reaction conditions, and polymerization method of designed materials on the performance. Porous polymers based on the molecular structures of AIE has good physical and chemical stability and high quantum efficiency, meet the requirements on the photoelectric properties of the current photoelectric field. The applications of these porous materials in chemo-/bio-sensors and bioimaging will show good application foreground. To explore the aggregation induced the synthesis of luminescent polymer skeleton has important academic meaning and practical value.