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Controlling Gas Selectivity in Molecular Porous Liquids by Tuning the Cage Window Size
Author(s) -
Egleston Benjamin D.,
Luzyanin Konstantin V.,
Brand Michael C.,
Clowes Rob,
Briggs Michael E.,
Greenaway Rebecca L.,
Cooper Andrew I.
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201914037
Subject(s) - selectivity , cage , porosity , porous medium , window (computing) , pulsed field gradient , molecule , chemistry , materials science , chemical engineering , analytical chemistry (journal) , chromatography , organic chemistry , mathematics , combinatorics , computer science , engineering , operating system , catalysis
Control of pore window size is the standard approach for tuning gas selectivity in porous solids. Here, we present the first example where this is translated into a molecular porous liquid formed from organic cage molecules. Reduction of the cage window size by chemical synthesis switches the selectivity from Xe‐selective to CH 4 ‐selective, which is understood using 129 Xe, 1 H, and pulsed‐field gradient NMR spectroscopy.