AI Article Synopsis
- The study explores how to effectively synthesize host-guest systems of metal-organic frameworks (MOFs) with air-sensitive metal complexes, addressing challenges in their production.
- Researchers utilized chemical vapor infiltration and advanced techniques like synchrotron X-ray powder diffraction and Fourier Transform infrared spectroscopy to confirm successful loading of Fe(CO) into two types of MOFs: HKUST-1 and NH-MIL-101(Al).
- Findings reveal that while HKUST-1 shows a strong interaction with Fe(CO), leading to high loading, this strong interaction can cause structural deformation at elevated temperatures; in contrast, NH-MIL-101(Al) exhibits weaker interactions and remains stable under similar conditions.
Article Abstract
The host-guest chemistry of metal-organic frameworks (MOFs) has been attracting increasing attention owing to the outstanding properties derived from MOFs-guests combinations. However, there are large difficulties involved in the syntheses of the host-guest MOF systems with air-sensitive metal complexes. In addition, the behaviors on host-guest interactions in the above systems at high temperature are not clear. This study reported the synthetic methods for host-guest systems of metal-organic framework and air-sensitive metal complexes via a developed chemical vapor infiltration process. With the synchrotron X-ray powder diffraction (XRPD) measurements and Fourier Transform infrared spectroscopy (FTIR), the successful loadings of Fe(CO) in HKUST-1 and NH-MIL-101(Al) have been confirmed. At high temperatures, the structural and chemical componential changes were investigated in detail by XRPD and FTIR measurements. HKUST-1 was proven to have strong interaction with Fe(CO) and resulted in a heavy loading amount of 63.1 wt%, but too strong an interaction led to deformation of HKUST-1 sub-unit under heating conditions. NH-MIL-101(Al), meanwhile, has a weaker interaction and is chemically inert to Fe(CO) at high temperatures.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8369409 | PMC |
| http://dx.doi.org/10.3389/fchem.2021.706942 | DOI Listing |
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