INTEMA 05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
artículos
Título:
A simple computational model for MOF-5W absorption and photoluminescence to distinguish MOF-5 from its hydrolysis products
Autor/es:
SAN ROMÁN, ENRIQUE; RODRÍGUEZ, NICOLÁS ARTEMIO; GRELA, MARÍA ALEJANDRA; PARRA, RODRIGO
Revista:
JOURNAL OF MATERIALS SCIENCE
Editorial:
SPRINGER
Referencias:
Año: 2020 vol. 55 p. 6588 - 6597
ISSN:
0022-2461
Resumen:
In the present study, changes in absorptance and emission spectra of MOF-5 after being exposed to water are examined in detail and compared with DFT calculations. The results of the computational studies show the effect of water molecules in the absorptance spectra of MOF-5W, the first hydrolysis product of MOF-5, highlighting the role of the protonation of the ligand on the bandgap of these materials. Finally, the photoluminescence of MOF-5, MOF-5W and MOF5H (the final hydrolysis product of MOF-5) is analysed in detail. These results indicate that changes in MOF-5 framework caused by the presence of water can be simply tracked by luminescence spectroscopy, making it possible to analyse the degree of hydrolysis (whether the sample contains MOF-5, MOF-5W or MOF-5H) without resorting to XRD analysis, for example.
