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Metal-organic framework (MOF) material NU-1000 adsorbs dimers cellobiose and lactose from aqueous solution, in amounts exceeding 1250 mg gNU-1000-1 while completely excluding the adsorption of the monomer glucose, even in a competitive mode with cellobiose. The MOF also discriminates between dimers consisting of α and β linkages, showing no adsorption of maltose. Electronic structure calculations demonstrate that key to this selective molecular recognition is the number of favorable CH-π interactions made by the sugar with pyrene units of the MOF.
Bibliographical noteFunding Information:
AK is grateful for funding from the Office of Basic Energy Sciences of the Department of Energy (DE-FG02-05ER15696). PL, VB, LG, and OKF gratefully acknowledge the financial support from the Inorganometallic Catalyst Design Center, an EFRC funded by the U.S. Department of Energy, Office of Basic Energy Sciences (DE-SC0012702). We also thank Dr E. Haldoupis (University of Minnesota) for his technical support.
© The Royal Society of Chemistry 2016
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