Precise Modulation of the Breathing Behavior and Pore Surface in Zr-MOFs by Reversible Post-Synthetic Variable-Spacer Installation to Fine-Tune the Expansion Magnitude and Sorption Properties

Cheng-Xia Chen; Zhangwen Wei; Ji-Jun Jiang; Yan-Zhong Fan; Shao-Ping Zheng; Chen-Chen Cao; Yu-Hao Li; Dieter Fenske; Cheng-Yong Su

doi:10.1002/anie.201604023

Precise Modulation of the Breathing Behavior and Pore Surface in Zr-MOFs by Reversible Post-Synthetic Variable-Spacer Installation to Fine-Tune the Expansion Magnitude and Sorption Properties

Angew Chem Int Ed Engl. 2016 Aug 16;55(34):9932-6. doi: 10.1002/anie.201604023. Epub 2016 Jul 12.

Authors

Cheng-Xia Chen¹, Zhangwen Wei¹, Ji-Jun Jiang¹, Yan-Zhong Fan¹, Shao-Ping Zheng¹, Chen-Chen Cao¹, Yu-Hao Li¹, Dieter Fenske¹, Cheng-Yong Su²

Affiliations

¹ MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China.
² MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China. cesscy@mail.sysu.edu.cn.

PMID: 27405047
DOI: 10.1002/anie.201604023

Abstract

To combine flexibility and modifiability towards a more controllable complexity of MOFs, a post-synthetic variable-spacer installation (PVSI) strategy is used to implement kinetic installation/ uninstallation of secondary ligands into/from a robust yet flexible proto-Zr-MOF. This PVSI process features precise positioning of spacers with different length, size, number, and functionality, enabling accurate fixation of successive breathing stages and fine-tuning of pore surface. It shows unprecedented synthetic tailorability to create complicated MOFs in a predictable way for property modification, for example, CO2 and R22 adsorption/separation, thermal/chemical stability, and extended breathing behavior.

Keywords: R22 adsorption; breathing effect; metal-organic frameworks; post-synthetic modification; spacer insertion.

Publication types

Research Support, Non-U.S. Gov't