报告题目：Bottom-up Design and Synthesis of Functional Polymeric Materials via Dynamic Covalent Chemistry
报告人：张伟 教授
报告题目：Rethinking Plastics: Pathways to a Circular Future
报告人：金英华 博士/CTO
邀请人：王小慧 教授
报告时间：2023年12月27日上午9：00-10：30
报告地点：造纸D楼306会议室
欢迎广大师生踊跃参加！
制浆造纸工程国家重点实验室
bwin必赢
2023年12月14日
张伟教授简介
Dr. Wei Zhang received his B.S. in Chemistry from Peking University in 2000, and his Ph.D. in Chemistry from the University of Illinois at Urbana-Champaign with Prof. Jeffrey Moore in 2005. After conducting his postdoctoral research at MIT with Prof. Timothy Swager, he started his independent career at the Department of Chemistry and Biochemistry at University of Colorado Boulder in 2008. Currently he is a full professor and serves as the Department Chair. Dr. Zhang’s research is focused on utilizing dynamic covalent chemistry to develop novel organic and hybrid functional materials for a broad range of environmental and energy applications, such as carbon capture, light harvesting, energy storage, catalysis, and development of closed-loop recyclable thermosets and functional composites. He has received numerous awards/recognitions in his independent career, such as University New Inventor of the Year, 3M Non-Tenured Faculty Award, CAPA Distinguished Junior Faculty Award, NSF CAREER Award, Alfred P. Sloan Research Fellow, Provost’s Faculty Achievement Award, Guest Professorship at ETH Zürich, Tang Ao-Qing Guest Professorship at Jilin University, with the most recent election as a 2023 Senior Member of the National Academy of Inventors (NAI) and receipt of the 2022 American Chemical Society (ACS) Colorado Section Award and 2023 College Scholar Award.
报告摘要
Dynamic covalent chemistry (DCvC) has proven to be highly effective toward the construction of well-defined molecular and polymeric architectures. The error-correction mechanism enabled by the reversible formation of dynamic covalent bonds leads to the formation of structurally ordered, thermodynamically favored species. One such example is the solvothermal synthesis of covalent organic frameworks (COFs) with periodic structural order and low defect density. The chemical compositions of such frameworks are usually well-defined and inter-monomer connectivity (covalent bonding) is robust. Bottom-up synthesis of covalently linked polymers through DCvC has many critical advantages, such as easy tunability of functional and structural properties in a controlled fashion through rational design of the precursors, formation of highly stable linkages, minimized structural defect, and possible access to sophisticated architectures that are hard to obtain otherwise. This talk will focus on our recent progress in the development of three types of DCvC, namely alkyne metathesis, spiroborate exchange and dynamic nucleophilic aromatic substitution (DySNAr). These powerful synthetic tools enabled the bottom-up design and synthesis of novel polymeric materials, such as unprecedented single-crystal DNA-like helical covalent polymers (HCPs), a novel carbon allotrope, and closed-loop recyclable thermosets.
金英华博士简介
Dr. Yinghua Jin obtained her B. S. from Peking University in 2000, and her Ph.D. from University of Illinois at Urbana-Champaign (UIUC) in 2006. She is currently the co-founder and CTO of RockyTech. Her research focuses on the development of soft materials including polymers, composites, biomaterials, and nanosized discrete molecules. Over the past 20 years, she gained extensive R&D experience in both academic and industrial settings. Her working experience in startup companies as well as in top university research labs gave her the opportunity to understand both basic and applied research and has provided unique perspectives on science and technology transfer. She has published over 110 peer-reviewed articles in prestigious journals, including Nature, Nat. Chem., Nat. Rev. Chem., Nat. Synth., J. Am. Chem. Soc., Angew. Chem. Int. Ed., and Chem. Soc. Rev., among others. In addition to her scholarly articles, she has edited a comprehensive book in her field of expertise. Moreover, Dr. Jin holds five patents, recognized both in the United States and internationally. She has also been the principal investigator of multiple US Department of Energy (DOE) and National Science Foundation (NSF) funded projects.
报告摘要
Plastics have become an indispensable part of modern society, driving unprecedented advancements in both technological fields and everyday conveniences. Since the advent of synthetic polymers, more than 9.5 billion tons of plastics have been produced worldwide. Plastic materials are valued for their excellent properties, such as barrier properties, durability, flexibility, stability, lightweight nature, and cost-effectiveness. Industries like medical, automotive, and packaging heavily rely on plastics, finding them irreplaceable by any other materials. However, we are currently facing a significant challenge: the plastic crisis. In this talk, we will discuss how RockyTech has been tackling this pressing issue. Our focus is twofold: firstly, upcycling of existing plastics, a process which involves transforming used and discarded plastic materials into valuable new products through compatibilization and property enhancement, thereby extending their lifecycle and reducing waste. Secondly, we are at the forefront of producing innovative recyclable thermoset composite materials. These materials are not only designed for recyclability from their inception but also aim to minimize environmental impact through a significantly reduced carbon footprint. By adopting these approaches, RockyTech is not just contributing to a more sustainable environment but is also pioneering a paradigm shift in material sciences, underscoring our commitment to ecological responsibility and innovation in the circular economy of plastics.
