新型三嗪基共轭微孔聚合物的系统制备及多功能应用研究

近年来共轭微孔聚合物（CMPs）因其独特的性能得到了广泛的关注。含功能化官能团CMPs的高效合成及其结构-性能关系的建立是目前该领域的研究热点。1,3,5-均三嗪单元是一个典型的吸电子共轭基团，已被较多地应用于有机发光二级管等光电材料之中。含三嗪单元多孔聚合物的研究已有一些报道，但针对其结构-性能关系的系统研究依然较少。CMPs中均三嗪单元的引入主要有两种方式，一种是通过含三嗪单元的单体聚合而得，另一种是多腈基芳香族化合物通过环三聚反应制得。本项目将分别利用上述两种手段系统制备结构规律性变化的多种三嗪基CMP材料，详细研究结构单元变化、取代基侧链长度、寡聚物单体重复单元数目、推拉电子结构等对所得微孔聚合物光物理和多孔性能的影响，并根据其性能特点研究该类微孔聚合物在CO2吸附及化学传感等领域的多功能应用，尝试阐明三嗪基CMPs结构与性能之间的关系，从而获得具有更好应用表现的多孔材料。

In recent years, conjugated microporous polymers (CMPs) have received extensive attention due to their unique properties. Efficient synthesis and structure-property relationship studies of CMPs with functional group are the research hotspots of this filed. 1,3,5-triazine unit is a typical electron-withdrawing conjugated group and has been used extensively in optoelectronic materials for organic light-emitting diodes application. There are two methods for the introduction of triazine units into CMPs, polymerization of triazine-containing monomers and cyclotrimerization of multi-cyano aromatic compounds. In this proposal, triazine-based CMPs materials with regular structure variations will be prepared through both the methods mentioned as above. The influence of different factors (such as structure unit change, length of side-chain substituent group, number of repeating unit in oligomeric monomers and push-pull electronic structure) on the photophysics and porosity properties of the obtained CMPs will be studied in detail. Multifunctional applications of the polymers will be studied in areas such as CO2 adsorption and chemical sensing according to their specific properties. The aim is to try to illuminate structure-property relationship of triazine-based CMPs and hopefully we can obtain porous materials with better application performance.