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Updated: Apr 27, 2026
Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
Robust molecular crystals of titanium(IV)-oxo-carboxylate clusters showing water stability and CO2 sorption
Keunil Hong1, Woojeong Bak, Hyungphil Chun
1Department of Applied Chemistry, College of Science and Technology, Hanyang University , 55 Hanyangdaehak-ro, Ansan 426-791, Republic of Korea.
Abstract:
A series of new Ti(IV)-oxo clusters supported by carboxylate ligands are synthesized by solvothermal reactions, and their crystal structures and gas sorption properties are studied in detail. Depending on the reaction medium, two types of Ti6O6 clusters are formed with benzoate-derived ligands whose 2- or 4-position is substituted by a hydrophobic moiety. The molecular packing structures of these Ti clusters are found stable against water- and heat-treatments. Gas sorption studies reveal that a dense-packed Ti-carboxylate cluster can adsorb almost the same number of CO2 molecules as the one with considerable intermolecular voids in the packing structure. The effect of benzoate substituents on the gas sorption behavior is discussed.
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