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Issue 39, 2016
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Two heterovalent copper–organic frameworks with multiple secondary building units: high performance for gas adsorption and separation and I2 sorption and release

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Abstract

With the help of the multiple secondary building unit (SBU) strategy, two novel heterovalent Cu–MOFs, [(Cu4I4)Cu4L4(DABCO)2]·16DMF (JLU-Liu31) and [(Cu4I4)Cu3L3(DABCO)(DMF)2]·18DMF (JLU-Liu32) [H2L = pyridine-3,5-bis(phenyl-4-carboxylic acid), DABCO = 1,4-diazabicyclo[2.2.2]-octane], have been successfully solvothermally synthesized and structurally characterized. Both of the two compounds feature multiple SBUs and exhibit novel topologies. JLU-Liu31 possesses the largest sustainable pore volume among the MOFs based on Cu4I4 clusters. Moreover, the adsorption behaviours of the desolvated JLU-Liu31 material for some small gases (H2, O2, CO2, CH4, C2H6 and C3H8) have been analysed in low pressure regions; meanwhile, it exhibits commendable selectivity for O2 over N2, and C3H8 over CH4. The remarkable results illustrate that JLU-Liu31 is a good candidate for application in the separation of light hydrocarbons. Additionally, JLU-Liu32 exhibits impressive performance for I2 sorption and release in solvents.

Graphical abstract: Two heterovalent copper–organic frameworks with multiple secondary building units: high performance for gas adsorption and separation and I2 sorption and release

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Supplementary files

Article information


Submitted
20 Jun 2016
Accepted
04 Sep 2016
First published
05 Sep 2016

J. Mater. Chem. A, 2016,4, 15081-15087
Article type
Paper

Two heterovalent copper–organic frameworks with multiple secondary building units: high performance for gas adsorption and separation and I2 sorption and release

S. Yao, X. Sun, B. Liu, R. Krishna, G. Li, Q. Huo and Y. Liu, J. Mater. Chem. A, 2016, 4, 15081
DOI: 10.1039/C6TA05142A

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