新南威尔士大学Cyrille Boyer教授将于9月24日下午14：00-15：00，在材料楼520室做报告，题目为光控先进高分子材料的设计（Design of Advanced Materials using Light）。

报告内容简介：Reversible addition-fragmentation chain-transfer (RAFT) polymerization is a powerful tool for synthesizing macromolecules with controlled topologies and diverse chemical functionalities. In 2014, we reported an efficient activation of RAFT polymerization by the introduction of photocatalysts, named photoinduced electron/energy transfer–reversible addition fragmentation chain transfer (PET-RAFT) polymerization, allowing to activate these RAFT polymerizations under low energy and intensity visible light and without prior deoxygenation. In this talk, we will provide an overview of their potential applications in additive manufacturing (3D printing) and in nanomedicine. The application of RAFT polymerization to additive-manufacturing processes has been hindered due to their slow polymerization rates and sensitivity to oxygen. We reported a rapid visible light mediated RAFT polymerization process and applied it to a 3D printing system. The photosensitive resins contained a photocatalyst and a trithiocarbonate RAFT agent to afford polymerization without prior deoxygenation. Following the optimization of the resin formulation by varying the ratio of photocatalyst, a variety of 3D printing conditions were investigated to prepare functional materials. The mechanical properties of these 3D printed materials were investigated under different conditions, showing that the addition of RAFT affect the performance of these materials. Furthermore, the trithiocarbonate species incorporated in the polymer networks were able to be reactivated after the initial 3D printing process, which allowed the post functionalization of the printed materials via secondary photopolymerization processes, conferring self-healing properties. Finally, the incorporation of polymers terminated by RAFT agent was employed for the preparation of 3D printed multimaterials with a precise control of the nanostructure of these materials. We will discuss the effect of nanostructure of 3D printed materials on their mechanical properties and present their potential applications as energy devices. In a second part of this talk, taking advantages of the oxygen tolerance conferred by PET-RAFT technique, multiple parallel polymerizations were achieved enabling the synthetic optimization of functional polymers. More specifically, we prepared a library of antibacterial/fungal polymers and test their antimicrobial activities against different bacteria and fungi. Interestingly, we demonstrated that their antimicrobial and antifungal activity is affected by the monomer sequence in the polymer chain as well as by the monomer structure and polymer composition.

报告人姓名：Cyrille Boyer教授
报告人简介(英文)：Prof Cyrille Boyer is an Australian Laureate Fellow and Professor within the School of Chemical Engineering at the University of New South Wales. He is an associate Editor of European Polymer Journal and a member of Advisory Board of Advanced Materials, ACS Infectious Diseases, ACS MacroLetters, Polymer Chemistry, etc. His research has been recognized by several fellowships, including Australian Postdoctoral Fellowship (ARC-APD), ARC Future Fellowship, and more recently, ARC Australian Laureate Fellowship (starting in 2023). He has received several prestigious research awards, including 2018 IUPAC-Polymer International Young Researcher award, 2018 Polymer Chemistry Lectureship, 2018 Award of Excellence in Chemical Engineering, 2016 ACS Biomacromolecules/Macromolecules Young Researcher Award, 2016 Journal of Polymer Science Innovation award, Le Fevre Memorial Prize awarded by Australian Academy of Science for chemistry, and 2015 Malcolm McIntosh Prize for Physical Science (one of the Prime Minister Prizes for Science). Since 2018, he has been listed as a Highly Cited Researcher in Chemistry or Cross-field by Clarivate and named as one of the Leaders in Polymers and Plastics in Australia by the Australian Newspaper.

Cyrille’s research interests mainly cover the preparation of functional macromolecules using photocatalysts, which find applications in various areas, including nanomedicine, advanced materials, and energy storage. In nanomedicine, his group designs new antimicrobial and anticancer polymers. More recently, he has implemented his photochemistry to 3D printing for the fabrication of 3D printed objects, enabling precise control over the nano- and macro-structure of 3D printed objects.