Self-Assembly of Multi-Layered Metallo-Supramolecules with Increasing Complexity
讲座名称：
Self-Assembly of Multi-Layered Metallo-Supramolecules with Increasing Complexity
讲座时间：
2018-06-11
讲座人：
李霄鹏
形式：
校区：
兴庆校区
实践学分：
讲座内容：
讲座题目： Self-Assembly of Multi-Layered Metallo-Supramolecules with Increasing Complexity
讲座地点：前沿院西二楼 A102，曲江校区
讲座时间：2018年6月11日，上午9:00
讲座人：李霄鹏 博士 南佛罗里达大学助理教授
讲座内容：Self-assembly as a powerful bottom-up approach has been extensively used by nature to create complex biological systems. Synthetic supramolecular chemistry aims to use the principles of biological self-assembly to construct artificial nanostructures using molecular building blocks with desired functions and properties. The corresponding abiological assemblies, however, still suffered from a lack of complexity and thus were unable to reach the high degrees of functionality found in natural systems. With the goal of increasing the complexity of metallo-supramolecules, we designed and assembled a series of concentric, multi-layered architectures. With direct self-assembly strategy, we initiated our study through building different generations of 2D structures using terpyridine ligand. In the ligand preparation, pyrylium and pyridinium salts chemistry significantly facilitated the synthesis of multitopic ligands. Such ligand with multiple binding sites provided high geometric constraints to induce the formation of discrete structures. Replacing terpyridine by pyridine, we were able to assemble 3D sphere-in-sphere supramolecules with increasing complexity and stability. Finally, step-wise self-assembly was applied to advance terpyridine-based supramolecular chemistry into a new level of sophistication through constructing different generation of supramolecular fractals.
主办单位：前沿科学技术研究院
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