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Enhanced CO2 Sorption Performance of Metal-Organic Frameworks by in-Situ Hydrolysis of Tetrazine Moiety in the Ligand
Author NameAffiliationE-mail
QIAN Bin-Bin School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China  
ZHAO Meng School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China  
CHANG Ze School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China changze@nankai.edu.cn 
BU Xian-He School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China
College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China 		buxh@nankai.edu.cn 
Abstract: The polar acyl hydrazine groups were introduced into a “pillar-layer” MOF, [Zn4(bpta)2(dipytz)2(H2O)2]·4DMF·H2O (1) (H4bpta=1,1'-biphenyl-2,2',6,6'-tetracarboxylic acid and dipytz=di-3,6-(4-pyridyl)-1,2,4,5-tetrazine), through the in-situ hydrolysis modification of the dipytz pillar ligand, and [Zn4(bpta)2(dipytzhydr)(H2O)2]·solvent (2) (dipytzhydr=1,2-diisonicotinoylhydrazine) was obtained. The results of gas sorption measurement show that complex 2 has an enhanced CO2-framework affinity (initial CO2 adsorption enthalpies increase from 28.8 to 30.3 kJ·mol-1) and higher CO2/CH4 selectivity compared with that of complex 1. The present work indicates that in-situ hydrolysis modification is highly potential for the enhancement of CO2 adsorption performance of tetrazine functionalized MOFs.
Keywords: metal-organic frameworks  tetrazine  post-synthesis  property modulation  CO2 sorption
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QIAN Bin-Bin,ZHAO Meng,CHANG Ze,BU Xian-He.Enhanced CO2 Sorption Performance of Metal-Organic Frameworks by in-Situ Hydrolysis of Tetrazine Moiety in the Ligand[J].Chinese Journal of Inorganic Chemistry,2017,33(11):2051-2059.
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Chinese Journal of Inorganic Chemistry