Postsynthetic Modification of Mixed‐Ligand Metal‐Organic Gels for Adsorbing Nonpolar Organic Solvents

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Abstract
Metal‐organic gels (MOGs) with different central metals, Al‐ATA were synthesized by using 3‐[4‐(2,4‐dioxopentan‐3‐yl) phenyl]pentane‐2,4‐dione (PDA) and 2‐aminoterephthalic acid (H 2 ATA) as co‐ligands. Through the post‐synthetic modification (PSM) of perfluorooctanoyl chloride, Al‐ATA‐F with hydrophobic functional groups on both the pore and surface were obtained. It was characterized by NMR that the content of ATA in the modified gel was almost 33 times that of PDA, and the amidation substituent ratio was about 20 %. The Brunauer‐Emmett‐Teller (BET) specific surface area of the modified materials increases significantly, because many microporous are formed. Al‐ATA‐F is superhydrophobic despite its poor amidation yield. The hydrophobicity helps it having good adsorption effect on oil solvent.
Funding Information
  • National Natural Science Foundation of China (21574032)
  • Chinesisch-Deutsche Zentrum für Wissenschaftsförderung (GZ1286)

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