Related Experiment Videos
Metal-organic frameworks based on octafluorobiphenyl-4,4'-dicarboxylate: synthesis, crystal structure, and surface
Anastasia M Cheplakova1, Konstantin A Kovalenko, Denis G Samsonenko
1Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Akad. Lavrentiev Av., 630090 Novosibirsk, Russian Federation. k.a.kovalenko@niic.nsc.ru cluster@niic.nsc.ru.
Dalton Transactions (Cambridge, England : 2003)
|January 25, 2018
Summary
Researchers developed novel zinc coordination polymers using octafluorobiphenyl-4,4′-dicarboxylate. Some frameworks exhibit porosity and selectivity for gas mixtures, while others demonstrate high hydrophobicity.
Area of Science:
- Coordination Chemistry
- Materials Science
- Supramolecular Chemistry
Background:
- Coordination polymers from perfluorinated ligands are less explored than aromatic analogues.
- Octafluorobiphenyl-4,4′-dicarboxylate (oFBPDC) offers unique properties for framework construction.
Purpose of the Study:
- To synthesize and characterize novel zinc(II) coordination polymers utilizing oFBPDC.
- To investigate the structural diversity, porosity, and selective adsorption properties of these new materials.
Main Methods:
- Single-crystal X-ray diffraction for structural determination.
- Powder X-ray diffraction (PXRD), FT-IR, elemental analysis, and thermogravimetric analysis (TGA) for characterization.
- Brunauer-Emmett-Teller (BET) surface area analysis for porosity assessment.
Main Results:
- Six Zn(II) coordination polymers with varying dimensionalities (1D, 2D, 3D) were synthesized.
- Two frameworks, [Zn2(CH3CONH2)2(oFBPDC)2] (1) and [Zn2(oFBPDC)2(dabco)] (4), displayed porosity with BET surface areas of 470 m2 g-1 and 441 m2 g-1.
- Compound 4 exhibited selectivity for CO2/N2, CO2/CH4, and benzene/cyclohexane mixtures. Compounds 4 and 5 demonstrated high hydrophobicity with water contact angles of 136° and 133°, respectively.
Conclusions:
- The study successfully expanded the family of coordination polymers based on perfluorinated dicarboxylates.
- The synthesized materials show potential for gas separation and hydrophobic applications.
- The oFBPDC ligand facilitates the formation of diverse and functional metal-organic frameworks.