多芳香骨架桥联环糊精的分子识别与组装

Molecular recognition and assembly of cyclodextrin is the research hotspot of supramolecular chemistry. In this project, a series of bridged oiligocyclodextrins will de designed and synthesized from cyclodextrins containing 6, 7, or 8 D-glucose units and multi-aromatic skeletons including anthracene, phenanthroline, diazapyrene, perylene bisimide, diazaperopyrene, coronene, and small-sized graphene. The conformation, binding geometry, binding mode, binding ability, molecular selectivity, thermodynamic origin and kinetic origin of bridged oiligocyclodextrins as well as their molecular assemblies upon association with numerous guest molecules possessing pi systems will be investigated by means of spectrophotometric and microcalorimetric experiments. These studies will explore the controlling factors of the molecular multiple recognition and selective binding, especially how the cooperative contributions of multiple cyclodextrin cavities and the multi-aromatic skeleton bridges, from the thermodynamic and dynamic viewpoint. Furthermore, the structure-function relationship will be examined so as to control the molecular recognition and assembly.

环糊精的分子识别与组装是超分子化学的研究热点。本项目拟从从含有6-8个葡萄糖单元的环糊精和蒽、菲咯啉、二氮杂芘、二萘嵌苯、二氮杂靴二蒽、蔻、小石墨烯等多芳香骨架出发，设计和合成一系列多芳香骨架桥联环糊精。选择一系列具有pi体系的客体分子，通过光谱和量热滴定手段研究桥联环糊精、桥联环糊精与客体分子形成的包结配合物以及桥联环糊精分子组装体在固相和溶液中的结构，桥联环糊精及组装体结合客体分子的键合模式、键合能力和分子选择性，探索桥联环糊精及组装体选择键合和多重识别的机理、热力学起源和动力学起源。通过这些研究，将从热力学和动力学的角度阐明桥联环糊精分子识别与组装行为的控制因素，特别是桥联环糊精及组装体中多重空腔和多芳香骨架桥链的协同效应对分子多重识别和选择键合的影响，揭示该类桥联环糊精及组装体结构与性能的依赖关系，以便达到控制超分子体系分子识别与组装的目的。

环糊精的分子识别与组装是超分子化学的研究热点。本项目从含有6-8个葡萄糖单元的环糊精和蒽、菲咯啉、小石墨烯等多芳香骨架出发，设计和合成一系列多芳香骨架功能化环糊精。选择一系列具有体系的客体分子，通过光谱、量热滴定和电镜等手段研究环糊精、环糊精与客体分子形成的包结配合物以及环糊精分子组装体在固相和溶液中的结构，环糊精及组装体结合客体分子的键合模式、键合能力、分子选择性和组装体功能，探索环糊精及组装体选择键合和多重识别的机理、热力学起源和动力学起源。从热力学和动力学的角度阐明多芳香骨架环糊精分子识别与组装行为的控制因素，特别是环糊精及组装体中多重空腔和多芳香骨架的协同效应对分子多重识别和选择键合的影响，揭示了该类环糊精及组装体结构与性能的依赖关系。本项目取得了一系列重要的阶段性成果，研究成果在国内外期刊上发表论文90篇。申请国家发明专利6件，其中获专利授权2件。培养博士毕业生5人，硕士毕业生5人。