报告题目: MetalCarbonyl Polymers and Self-Assembled Aqueous Nanovesicles

报告人: Xiaosong Wang

Department ofChemistry, Waterloo Institute for Nanotechnology, University of Waterloo,Canada

报告时间：2016年10月25日(周二)下午2点

报告地点：苏州大学独墅湖校区一期907号楼1445室

Abstract:

Supramolecularnanotechnology aims to develop non-covalent synthetic techniques for functionalnanomaterials. Despite substantial exploration has been made in recent years,the field is still at an early stage of the development. We have tried toexplore the area via the synthesis and self-assembly of metal carbonyl (MC)building blocks. Based on well-developed organometallic migration insertionreaction (MIR), we created a new technique of migration insertionpolymerization (MIP) and prepared the first example of air stable andprocessible metal carbonyl polymers. The solution and self-assembly behaviourof the MC polymers and corresponding small molecules, structural analogue of therepeating unit, are studied. The MC molecules, are hydrophobic, but able toself-assemble in water via water-carbonyl interactions, resulting in uniformvesicles (MCsomes), MCsomes possess no critical aggregation concentration (CAC)and highly stable upon dilution. A range of novel properties associated withthe MCsome, e.g. aggregation-induced self-enhanced IR absorption,photoluminescence, exceptionally high encapsulation efficiency for hydrophilicmolecules, has been identified. The MCsome therefore represents a new group ofnanovesicles with potential applications complementary to well-studiedliposomes and polymersomes.

Biography:

Dr Xiaosong Wang is currently working atthe University of Waterloo as an Associate Professor. His Group is dedicated to the development of polymer andsupramolecular chemistry for functional nanomaterials. He recently developed anew polymerization technique, migration insertion polymerization (MIP), whichallows the first example of air-stable metal carbonyl polymers to be createdand investigated for potential applications. He has also developed a number ofsupramolecular techniques and concepts, including miniemulsion peripherypolymerization (MEPP) and living self-assembly (LSA), which propels the fieldsof supramolecular chemistry and nanomaterials.

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