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Tuesday, June 18

Development and Applications of Organic Porous Materials through Dynamic Covalent Chemistry

Wei Zhang, Department of Chemistry and Biochemistry, University of Colorado,
Physical Sciences Directorate Seminar
10:00 AM — 11:00 AM, Building 4100, Room C-301
Contact: Deen Jiang (jiangd@ornl.gov), 865.574.5199

Abstract

There has been significantly growing interest in well-defined, covalent organic polyhedron (COP) molecules due to their unique 3-D structural features and potential applications in studying host-guest interaction, molecular separation, catalysis, etc. This talk will describe the synthesis of a series of structure-tunable, shape-persistent COPs via thermodynamically-controlled, dynamic covalent chemistry (DCC) with high efficiency. The porous COPs showed unprecedented high selectivity in adsorption of CO2 over N2 (up to 138/1) under the standard temperature and pressure, thus showing great promise in carbon capture applications. Covalent crosslinking of these COP molecules led to the formation of novel framework materials with intrinsic porosity (cage-to-framework strategy). Their high chemical and thermal stability and great tunability in both pore volume and surface functionality represent great advantages. The selection of suitable synthetic tools and the structure-property relationship of these novel organic porous materials will also be discussed.