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Guest Alignment and Defect Formation during Pore Filling in Metal–Organic Framework Films.

Authors :
Baumgartner, Bettina
Mashita, Risa
Fukatsu, Arisa
Okada, Kenji
Takahashi, Masahide
Source :
Angewandte Chemie International Edition. 7/11/2022, Vol. 61 Issue 28, p1-8. 8p.
Publication Year :
2022

Abstract

The degree of pore filling is an important parameter for defining guest@MOF properties in applications including electronics, optics, and gas separation. However, the interplay of key aspects of host–guest interactions, such as a quantitative description of the guest alignment or the structural integrity of the host as function of pore filling are yet to be determined. Polarisation‐dependent infrared spectroscopy in attenuated total reflection configuration combined with gas sorption allowed to simultaneously study the orientation of the guest molecule and structural changes of the MOF framework during the pore filling process. Thereby we found, that initially randomly oriented guest molecules align with increasing pore filling during adsorption from the gas phase. At the same time, the framework itself undergoes a reversible, guest molecule‐dependent rotation of the aromatic linker and a linker detachment process, which induce defects. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14337851
Volume :
61
Issue :
28
Database :
Academic Search Index
Journal :
Angewandte Chemie International Edition
Publication Type :
Academic Journal
Accession number :
157800786
Full Text :
https://doi.org/10.1002/anie.202201725