通过引导组装发光液晶构筑高效的偏振发光材料

发光液晶兼具有序性和发光性能，在构筑偏振发光材料方面具独特优势，但其畴区通常为无序排列，且对外部环境较为敏感，具有不稳定性，限制其进一步应用。在本项目中，申请人拟结合引导组装和原位聚合的方法制备有序结构可控并精确定位的发光液晶高分子，从而构筑一类高效的偏振发光材料。首先，设计并合成一类具有聚集诱导发光效应且含有可聚合双键的发光液晶，并通过改变其化学结构调控其手性行为、发光性质、有序结构，进而通过化学模板对该类发光液晶有序结构进行引导组装，使其畴区进行取向和定位，实现其有序结构的精确排列，最后将其原位聚合制备出结构精确排列的发光液晶高分子。同时对该类发光液晶材料的化学结构、液晶相结构、固体态发光、偏振发光进行仔细探讨，并反馈于分子设计合成、引导组装，最终为构筑具有应用前景的功能材料提供技术支持和理论依据。

Luminescent liquid crystals (LLCs) with ordering and emissive behavior show unique advantages in constructing polarized luminescent materials. However, the further application of LLCs is limited by their irregular arrangement of the ordered structures and the instability to the external environment. In this proposal, we intend to prepare the luminescent liquid crystalline polymers (LLCPs) with controlled ordered structure and precise position by combining the methods of directed self-assembly (DSA) and in-situ polymerization, which is used to construct a kind of highly efficient polarizing luminescent materials. We first design and synthesize a series of LLCs with polymerizable ethylene based on aggregation induced emission (AIE) effect, whose chiral behavior, luminescent property and ordered structure can be controlled by adjusting their molecular structure. Further, chemical patterns are employed to guide the domain orientation and register of LLCs to realize the orientation and accurate arrangement of the ordered structure by DSA method, then the in-situ polymerization is carried out to prepare LLCPs with the same ordered structure LLCs after DSA. Meanwhile, the chemical structure, liquid crystal phase structure, solid-state luminescence behavior and polarized luminescence behavior of the resultant materials are comprehensively analyzed in detail. Then the resultant results are feedbacked to the design, synthesis, DSA of LLCs, which is helpful to provide the technical support and theoretical basis for constructing the functional materials with the promising application.