Self-assembly of two robust 3D supramolecular organic frameworks from a geometrically non-planar molecule for high gas selectivity performance
Date
2019-05-29
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Publisher
The Royal Society of Chemistry
Abstract
The synthesis of highly porous frameworks has received continuous research interest, but achieving the ability to target stable and selective materials remains challenging. Herein, by utilizing a 'direction-oriented' strategy and modulating reaction conditions, two novel 3D porous supramolecular organic framework (SOF) materials ( JLU-SOF2 and JLU-SOF3 , as isomers) are assembled from a non-planar building block (TMBTI = 2,4,6-trimethyl benzene-1,3,5-triyl-isophthalic acid) and they display permanent porosity, high thermal stability, and good recyclability. It is worth mentioning that the CO 2 uptake values of JLU-SOF2 and JLU-SOF3 rank among the highest values for SOF-based materials under ambient conditions. Furthermore, these two materials exhibit preferential adsorption of CO 2 over N 2 and CH 4 , and can effectively separate the mixtures of light hydrocarbons. These studies indicate the possible application of JLU-SOF2 and JLU-SOF3 in trapping greenhouse gases and upgrading natural gas. In addition, this synthetic strategy introduces an effective method for developing remarkable 3D SOFs among other framework materials. Two 3D SOFs were synthesized based on a 'direction-oriented' strategy. The unique and permanent porosity structures exhibit remarkable ability to separate CO 2 from N 2 and light hydrocarbons.
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Keywords
Benzene, Greenhouse gases, Porosity, Chemical reaction, Conditions and laws of
Citation
Zhou, Kan, L., Eubank, J. F., Li, G., Zhang, L., & Liu, Y. (2019). Self-assembly of two robust 3D supramolecular organic frameworks from a geometrically non-planar molecule for high gas selectivity performance. Chemical Science (Cambridge), 1(26), 6565–6571. https://doi.org/10.1039/c9sc00290a