Projects per year
Abstract
Metal-organic frameworks (MOFs) are extensively studied due to their unique surface properties, enabling many intriguing applications. Breathing MOFs, a subclass of MOFs, have gained recent interest for their ability to undergo structural changes based on factors like temperature, pressure, adsorbed molecules. Certain MOFs also exhibit remarkable optical properties useful for applications such as sensors, light-emitting diodes, and scintillators. The most promising MOFs possess high porosity, breathing properties, and photoluminescence activities, allowing for improved device responsiveness and selectivity. Understanding the relationship between crystal structures and photoluminescence properties is crucial in these cases. As studies on this topic are still very limited, we report for the first time an exhaustive study on the solid-state luminescence of the breathing MOF MIL-53(Al), that can stabilize in three different crystalline structures: open-pore, hydrated narrow-pore and closed-pore. We unveil a fascinating solid-state luminescence spectrum, comprising three partially overlapping bands, and elucidate the intricate electronic transitions within each band as well as their intimate correlation with the local crystalline structures. Our characterizations of spectroscopic properties and decay times provide a deeper understanding of the luminescent behaviour of MIL-53(Al) and demonstrate that is possible to identify present crystalline structures by optical measurements or to modify the optical properties inducing structural transitions for this type of materials. These insights could help to design next-generation, selective sensors or smart light emitting devices.
Original language | English |
---|---|
Article number | 112747 |
Number of pages | 7 |
Journal | Microporous and Mesoporous Materials |
Volume | 361 |
Early online date | 15 Aug 2023 |
DOIs | |
Publication status | Published - 1 Nov 2023 |
Keywords
- MOFs
- MIL-53
- Breathing
- Luminescence
- Light emission
Fingerprint
Dive into the research topics of 'Origin of the solid-state luminescence of MIL-53(Al) and its connection to the local crystalline structure'. Together they form a unique fingerprint.Projects
- 3 Finished
-
Light Element Analysis Facility (LEAF): Light Element Analysis Facility (LEAF)
Irvine, J. T. S. (PI), Baker, R. (CoI) & Miller, D. N. (CoI)
5/04/20 → 4/04/23
Project: Standard
-
H2020 ERC Advanced Grant 2017 ADOR: H2020 ERC Advanced Grant 2017 ADOR
Morris, R. E. (PI)
1/10/18 → 30/09/23
Project: Fellowship
-
Electon Microscopy: Electon Microscopy for the characterisation and manipulation of advanced function materials and their interfaces at the nanoscale
Irvine, J. T. S. (PI), Baker, R. (CoI) & Zhou, W. (CoI)
1/04/18 → 2/09/20
Project: Standard