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A Flexible and Stable Interpenetrated Indium Pyridylcarboxylate Framework with Breathing Behaviors and Highly Selective Adsorption of Cationic Dyes

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journal contribution
posted on 06.03.2019, 19:35 by Bin Zhang, Qian-Qian Chu, Ke-Fen Yue, Shi-Hui Zhang, Bo Liu, Yao-Yu Wang
An interpenetrated indium pyridylcarboxylate framework, [NH2(CH3)2]­[In­(L)2]·2.5DMF·5H2O (1), has been synthesized by employing a pyridylcarboxylate ligand, 4-(3-carboxylphenyl)­picolinic acid (H2L), and an In3+ ion, with both chemical stability and framework flexibility. The desolvated 1 exhibits an uncommon breathing sorption behavior and shows highly selective adsorption for C2H2, C2H4, and CO2 over CH4. Furthermore, 1 shows rapid and higher adsorption efficiency for methylene blue and neutral red in aqueous solution.