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Updated: Dec 17, 2025
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Rational Design of Microporous MOFs with Anionic Boron Cluster Functionality and Cooperative Dihydrogen Binding Sites
Yuanbin Zhang1,2, Jianbo Hu1,2, Rajamani Krishna3
1Key laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
Abstract:
Separation of acetylene (C2 H2 ) from carbon dioxide (CO2 ) or ethylene (C2 H4 ) is important in industry but limited by the low capacity and selectivity owing to their similar molecular sizes and physical properties. Herein, we report two novel dodecaborate-hybrid metal-organic frameworks, MB12 H12 (dpb)2 (termed as BSF-3 and BSF-3-Co for M=Cu and Co), for highly selective capture of C2 H2 . The high C2 H2 capacity and remarkable C2 H2 /CO2 selectivity resulted from the unique anionic boron cluster functionality as well as the suitable pore size with cooperative proton-hydride dihydrogen bonding sites (B-Hδ- ⋅⋅⋅Hδ+ -C≡C-Hδ+ ⋅⋅⋅Hδ- -B). This new type of C2 H2 -specific functional sites represents a fresh paradigm distinct from those in previous leading materials based on open metal sites, strong electrostatics, or hydrogen bonding.
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