氰基苯乙烯类超分子凝胶的可控制备及其传感性能研究

The study of supramolecular gels has developed into a well-recognized field of materials science, pertaining to the general area of soft matter. A series of functional organogels which can response to the external stimuli and output the decection will be designed and synthesized. Take these organic molecules as the basic building blocks, under the suitable physical and chemical conditions, through the optimization of the molecular structure and the regulation of molecular non-covalent interaction, the supramolecular gels will aggregate to obtain the desired microstructure and function. Of particular interest for organogel material science are ''smart gels'', i.e. gels whose properties can be controlled reversibly or irreversibly in response to changes in external chemical, thermal stimuli or sound. Cyanostilbene and its derivatives have received great research attention because of their unique multi-responsive, modiable, and luminescent characteristics. Most cyanostilbene-based compounds can produce typical aggregation-induced enhanced emission (AIEE) in the aggregated or solid states. The cyano interaction could cooperate with other intermolecular interactions such as π-π stacking, to fabricate supramolecular architectures. On the basis of their unique feature and easily bonded with other units or systems, cyanostilbene and its derivatives are promising for applications in optoelectronic devices, chemosensors, and biological imaging.

随着超分子凝胶研究的逐渐深入，构筑对外界刺激进行可控响应的功能凝胶材料已经成为超分子凝胶研究领域中的热点。本项目拟设计、合成新的含氰基苯乙烯基元的功能凝胶因子，使其兼具成胶、响应、检测输出能力。以其作为基本构筑基元，在合适的物理、化学条件下，通过分子结构的优化和分子间非共价相互作用的调控使超分子凝胶聚集体获得预期的微观结构。系统研究凝胶因子的化学组成、结构与有序分子聚集体的形成和结构之间的关系，探索凝胶体系形成的机制。考察温度、介质、外来分子、离子以及光、电、磁等外场对聚集体的形态、尺寸和稳定性的影响。设计、制备结构及功能协同、对外界刺激敏感、易于调控的超分子凝胶材料。进一步开发具有多变量刺激、多通道响应的超分子凝胶材料，实现凝胶材料的宏观或微观响应性输出及传感应用。

随着超分子凝胶研究的逐渐深入，构筑对外界刺激进行可控响应的功能凝胶材料已经成为超分子凝胶研究领域中的热点。本项目选择氰基苯乙烯为核心结构基元，构筑了一系列兼具成胶、响应、检测输出能力的超分子凝胶体系。取得的主要研究成果包括：1) 在分子和结构设计的基础上，获得了一系列具有多重刺激响应性的有机功能分子；2) 系统研究了凝胶因子的化学组成、结构与有序分子聚集体的形成和结构之间的关系，探索了凝胶体系形成的机制；3) 考察了温度、介质、外来分子、离子以及光、电、磁等外场对聚集体的形态、尺寸和稳定性的影响；4) 设计、制备了一系列结构及功能协同、对外界刺激敏感、易于调控的超分子凝胶传感材料。共发表SCI收录的研究论文16篇，申请中国发明专利3项，授权2项。共培养博士研究生4人，硕士研究生2人。