The MathNet Korea
Information Center for Mathematical Science

세미나

Information Center for Mathematical Science

세미나

서울대학교 화학과 세미나
Title Goblins, Brimstone and CHIPs: Unconventional Polymers for Energy, Defense and Sustainability
Date 2019-01-29
Speaker Jeffrey Pyun(University of Arizona)
Sponsors 2019-01-29
Host SNU
Place 500동, 목암홀
Abstract We will present our recent efforts in the polymerization of unconventional monomers to prepare novel polymeric and nanocomposite materials. We will discuss the polymerization of a novel class of polymer-nanoparticle hybrid materials on dipolar cobalt nanoparticles, which were used as “colloidal monomers” in a process termed Colloidal Polymerization. From this process, we have been able to synthesize electroactive cobalt oxide nanowires and heterostructured nanocomposites with either noble metal, or semiconductor inclusions. We will also present our recent work on novel sulfur utilization chemistry for polymeric materials. Elemental sulfur is manufactured at a level of 70 million tons every year, which is primarily produced via hydrodesulfurization of crude petroleum. These types of polymeric materials exhibit very high charge capacity again Li-insertion and have tremendous potential as inexpensive, high performance cathodes for Li-S batteries. Furthermore, these sulfur-rich copolymers exhibit unusually high refractive indices (n = 2.0) and can be easily processed in thin films, or molded objects.