Underlying solvent-based factors that influence permanent porosity in porous liquids

Porous liquids (PLs) offer the potential to combine the ready handling and mature industry status of liquid absorbents, with the high permanent porosity of metal organic frameworks. To be functional, these nanocomposites need to satisfy a number of performance parameters, such as stability and visco...

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Published in:Nano research 2022-04, Vol.15 (4), p.3533-3538
Main Authors: Mahdavi, Hamidreza, Zhang, Huacheng, Macreadie, Lauren K., Doherty, C. M., Acharya, Durga, Smith, Stefan J. D., Mulet, Xavier, Hill, Matthew R.
Format: Article
Language:English
Subjects:
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Carbon dioxide
Chemistry and Materials Science
Condensed Matter Physics
Hydrophobicity
Liquids
Materials Science
Metal-organic frameworks
Nanocomposites
Nanotechnology
Photoluminescence
Photons
Porosity
Research Article
Solvents
Sorption
Zeolites
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Summary:Porous liquids (PLs) offer the potential to combine the ready handling and mature industry status of liquid absorbents, with the high permanent porosity of metal organic frameworks. To be functional, these nanocomposites need to satisfy a number of performance parameters, such as stability and viscosity of the porogen-solvent combination, avoiding solvent penetration into metal organic framework (MOF) pores, suitable capacities, and kinetics for gas sorption. In this work, we systematically investigate the component materials to elucidate the parametric space where stable photoluminescence (PL) can be generated. In this situation, deeper conclusions were able to be drawn with regard to the influence of hydrophobicity/philicity on the properties of the resulting nanocomposites. Zeolitic imidazolate frameworks (ZIFs) were combined with a range of solvents varying in steric bulk, to deliver CO 2 sorption capacities as high as 4.2 mmolg −1 at 10 bar. These findings may have broader implications for future investigations of this tantalising field of nanocomposites.
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-021-3862-5