学 术 报 告 报告名称：Metal Carbonyl Polymers and Self-Assembled Aqueous Nanovesicles  报告人：Prof. Xiaosong Wang University of Waterloo, Cananda 时间：2016-10-28（周五） 下午15:00 - 17:00 地点：无机楼107 120*90, 90*60 报告人简介： Dr Xiaosong Wang is currently working at the University of Waterloo as an Associate Professor. His Group is dedicated to the development of polymer and supramolecular chemistry for functional nanomaterials. He recently developed a new polymerization technique, migration insertion polymerization (MIP), which allows the first example of air-stable metal carbonyl polymers to be created and investigated for potential applications. He has also developed a number of supramolecular techniques and concepts, including miniemulsion periphery polymerization (MEPP) and living self-assembly (LSA), which propels the fields of supramolecular chemistry and nanomaterials. 报告内容： Supramolecular nanotechnology aims to develop non-covalent synthetic techniques for functional nanomaterials. Despite substantial exploration has been made in recent years, the field is still at an early stage of the development. We have tried to explore the area via the synthesis and self-assembly of metal carbonyl (MC) building blocks. Based on well-developed organometallic migration insertion reaction (MIR), we created a new technique of migration insertion polymerization (MIP) and prepared the first example of air stable and processible metal carbonyl polymers. The solution and self- assembly behavior of the MC polymers and corresponding small molecules, structural analogue of the repeating unit, are studied. The MC molecules, are hydrophobic, but able to self-assemble in water via water-carbonyl interactions, resulting in uniform vesicles (MCsomes), MCsomes possess no critical aggregation concentration (CAC) and highly stable upon dilution. A range of novel properties associated with the MCsome, e.g. aggregation-induced self-enhanced IR absorption, photoluminescence, exceptionally high encapsulation efficiency for hydrophilic molecules, has been identified. The MCsome therefore represents a new group of nanovesicles with potential applications complementary to well-studied liposomes and polymersomes. 北京化工大学化工资源有效利用国家重点实验室 北京化工大学理学院 林彦军教授课题组