Comparative study of metal-organic frameworks synthesized via imide condensation and coordination assembly.
Qiao LiuJordon S HilliardZhongzheng CaiCasey R WadePublished in: RSC advances (2024)
A series of metal-organic frameworks (1-XDI) have been synthesized by imide condensation reactions between an amine-functionalized pentanuclear zinc cluster, Zn 4 Cl 5 (bt-NH 2 ) 6 , (bt-NH 2 = 5-aminobenzotriazolate), and organic dianhydrides (pyromellitic dianhydride (PMDA), naphthalenetetracarboxylic dianhydride (NDA), 3,3',4,4'-biphenyltetracarboxylic dianhydride (BPDA) and 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (HFIPA)). The properties of the 1-XDI MOFs have been compared with analogues (2-XDI) prepared using traditional coordination assembly. The resulting materials have been characterized by ATR-IR spectroscopy, acid-digested 1 H NMR spectroscopy, elemental analysis, and gas adsorption measurements. N 2 adsorption isotherm data reveal modest porosities and BET surface areas (30-552 m 2 g -1 ). All of the new 1-XDI and 2-XDI MOFs show selective adsorption of C 2 H 2 over CO 2 while 2-PMDI and 2-BPDI exhibit high selectivity toward C 3 H 6 /C 3 H 8 separation. This study establishes imide condensation of preformed metal-organic clusters with organic linkers as a viable route for MOF design.
Keyphrases
- metal organic framework
- ionic liquid
- room temperature
- aqueous solution
- water soluble
- oxide nanoparticles
- electronic health record
- big data
- molecular docking
- gene expression
- machine learning
- quantum dots
- mass spectrometry
- dna damage
- data analysis
- carbon dioxide
- solid state
- molecular dynamics simulations
- perovskite solar cells
- structural basis