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Found 277 Results

August 2012 Research and Publications

Members of the Gagliardi group recently publised an article in Nature Chemistry entitled, Ab initio carbon capture in open-site metal-organic frameworks.” 

During the formation of metal-organic frameworks (MOFs), metal centres can coordinate with the intended organic linkers, but also with solvent molecules. In this case, subsequent activation by removal of the solvent molecules creates unsaturated ‘open’ metal sites known to have a strong affinity for CO2 molecules, but their interactions are still poorly understood. Common force fields typically underestimate by as much as two orders of magnitude the adsorption of CO2 in open-site Mg-MOF-74, which has emerged as a promising MOF for CO2 capture. Here we present a systematic procedure to generate force fields using high-level quantum chemical calculations. Monte Carlo simulations based on an ab initio force field generated for CO2 in Mg-MOF-74 shed some light on the interpretation of thermodynamic data from flue gas in this material. The force field describes accurately the chemistry of the open metal sites, and is transferable to other structures. This approach may serve in molecular simulations in general and in the study of fluid-solid interactions.

June 2012 Research and Publications

Working with scientists at the University of Notre Dame in Indiana and the Christian-Albrecht University in Germany, Laura has published a new research article, “Differentiating between Trivalent Lanthanides and Actinides,” in the Journal of the American Chemical Society.

These compounds were synthesized in the Albrecht-Schmitt group at Notre Dame and were investigated with quantum chemical methods in order to rationalize the differences in their electronic structures by Gagliardi group member Daniel Grant.