Start: November 7, 2024 3:30 p.m.
End: November 7, 2024 4:30 p.m.
Connecting Defectivity and Porosity in Microporous Polymers
Dr. James R. Bour
Assistant Professor, Department of Chemistry, Wayne State University
Thursday, November 7th @ 3:30 PM
FB 253
Porous organic polymers are rare examples of high surface area materials with broad spectrum chemical stability. These properties render them attractive candidates for applications where surface interactions and stability govern performance. The utility of these materials in applications such as gas storage, water purification, energy storage and catalysis is often positively correlated with porosity. Empirical observations in this area show that the porosity is highly dependent on synthetic pathway, yet little is known about how reactions affect bulk porosity metrics (e.g. surface area, micropore volume). This seminar describes efforts to quantify dangling end defects in high surface area organic polymers and relate them to porous organic polymer properties. Using a network disassembly approach, we show that the presence of structural defects is strongly dependent on synthetic pathway and that there is a strong inverse correlation between porosity metrics and defects. Surface area, and overall pore volume drop significantly with added defectivity. Implications and applications of these insights on synthetic approaches are discussed.