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Updated: Jun 29, 2025
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Preparation of a Corannulene-functionalized Hexahelicene by CopperI-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
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Dinuclear Copper Sulfate-Based Square Lattice Topology Network with High Alkyne Selectivity
Yassin H Andaloussi1, Debobroto Sensharma1, Andrey A Bezrukov1
1Department of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland.
Crystal Growth & Design
|March 25, 2024
Summary
New porous coordination networks (PCNs) using copper sulfate demonstrate high selectivity for acetylene over ethylene and carbon dioxide. These sulfate-based PCNs show promise for advanced gas separation applications.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Porous coordination networks (PCNs) utilizing inorganic anions as linkers offer selective gas separation.
- Electron-rich fluorinated anions are common, but sulfate anions present a cost-effective and environmentally friendly alternative.
- Previous research has highlighted the potential of sulfate anions in PCN development.
Purpose of the Study:
- To synthesize and characterize novel PCNs using a copper sulfate dimer building block.
- To investigate the structural properties and gas sorption capabilities of these new materials.
- To evaluate the selectivity of the PCNs for specific gas mixtures, particularly focusing on C2 hydrocarbons and CO2.
Main Methods:
- Synthesis of two square lattice (sql) coordination networks, CuSO4(1,4-bib)1.5 (1) and CuSO4(1,4-bin)1.5 (2), using a copper sulfate dimer.
- Characterization using variable-temperature single-crystal X-ray diffraction (SCXRD) and powder X-ray diffraction (PXRD) to study structural transformations.
- Gas sorption studies on the narrow-pore phase of CuSO4(1,4-bin)1.5 (2np) to determine gas selectivity.
Main Results:
- Two novel sql coordination networks, 1 and 2, were successfully synthesized via solvent layering or slurrying.
- Both networks exhibited reversible structural transformations attributed to linker rotations or internetwork displacements.
- The narrow-pore phase of 2 (2np) showed high calculated selectivity for C2H2 over C2H4 (33.01) and CO2 (15.18), with strong breakthrough performance.
- Significant selectivity for C3H4 over C3H6, CO2, and C3H8 was also observed.
Conclusions:
- Copper sulfate-based PCNs can be effectively synthesized using a rare dimer building block.
- These sulfate-based PCNs exhibit reversible structural dynamics.
- The materials demonstrate promising selectivity for industrially relevant gas separations, suggesting their utility in gas and vapor separation technologies.
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