含2,6-吡啶二甲酰亚胺基的Schiff 碱大环非共价微纳结构组装及性质

人工合成的大环分子在推动超分子化学的发展历程中具有关键的作用。近年来，基于大环主客体化学的超分子自组装，由于非共价键的可逆性、多样性及灵活性在纳米材料领域备受关注。我们的近期研究结果显示Schiff 碱大环自组装在构筑有机微纳结构方面具有非常独特的性质。本项目立足于大环尺寸和结构的调控，以一步法简单、高效合成系列含2,6-吡啶二甲酰亚胺基的Schiff 碱[2+2]和[1+1]大环，通过大环自身分子内或/和分子间的非共价作用构筑系列有机微纳结构材料；探讨不同微纳结构形成的条件和控制因素；并通过Schiff 碱大环及其大环转化过程中的自组装行为考察，进一步理解大环结构的微细改变对其微纳结构及形貌的影响机制。同时，建立微纳结构材料用于气体吸附及水溶性体系中特定组分的吸附与分离的实验模型，为有机功能纳米材料的制备和应用提供新的理论基础和技术支撑。

Artificial macrocycles play a key role in driving the development of supramolecular chemistry. In recent years, supramolecular self-assembly from macrocycle-based host-guest complexes has attracted much attention in the field of nanomaterials, due to the reversibility, diversity and flexibility of non-covalent interactions. Our recent research results indicated that self-assembly from the Schiff base macrocyclcles has unique properties in constructing organic micro-nanostructures. In this project, a series of Schiff base [2+2] and [1+1] macrocycles which containing 2,6-pyridinediimide groups will be synthesized with one step reaction with highly efficiency based on the regulation of the size and shape of the macrocycles. Then, a number of organic micro-nano-structured materials will be fabricated through multiple non-covalent interactions from intra or/and inter-molecular interactions of Schiff base macrocycles. The related conditions and control factors of the formation of those micro-nanostructures will be detailed investigated. In particular, we intend to fully evaluate the self-assembly behavior of Schiff base macrocycles with different structures even with minor difference, which should be play the crucial roles in the formtion of that micro-nano structures and their morphologies. Furthermore, we hope that a series of application models of that Schiff base marocycle-based organic micro-nano structures could be established such as in gas adsorption, adsorption and separation of specific components in water-compatible systems. Overall, we expect that this study should be of interest in the functional organic micro-nanostructures field.