| Autor: |
Sapnik AF; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK. tdb35@cam.ac.uk., Thorne MF; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK. tdb35@cam.ac.uk., Castillo-Blas C; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK. tdb35@cam.ac.uk., Keenan L; Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, OX11 0DE, UK., Johnson T; Johnson Matthey Technology Centre, Blount's Court, Sonning Common, RG4 9NH, UK., Bennett TD; Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK. tdb35@cam.ac.uk. |
| Abstrakt: |
Amorphous metal-organic frameworks are rarely formed via direct synthesis. Our limited understanding of their atomic assembly in solution prevents full exploitation of their unique structural complexity. Here, we use in situ synchrotron X-ray absorption spectroscopy with sub-second time resolution to probe the formation of the amorphous Fe-BTC framework. Using a combination of spectral fingerprinting, linear combination analysis, and principal component analysis coupled with kinetic analyses, we reveal a multi-stage formation mechanism that, crucially, proceeds via the generation of a transient intermediate species. |
