Quenching of photoluminescence in a Zn-MOF sensor by nitroaromatic molecules
| Autor: | Jing Li, Stephanie Jensen, Timo Thonhauser, Yves J. Chabal, William P. Lustig, Dmitri S. Kilin, Kui Tan |
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| Rok vydání: | 2019 |
| Předmět: |
Quenching (fluorescence)
Materials science Photoluminescence Sensing applications Ab initio Infrared spectroscopy 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences Materials Chemistry Molecule Metal-organic framework 0210 nano-technology Selectivity |
| Zdroj: | Journal of Materials Chemistry C. 7:2625-2632 |
| ISSN: | 2050-7534 2050-7526 |
| DOI: | 10.1039/c8tc06281a |
| Popis: | We uncover the exact mechanisms that lead to a quenching of the photoluminescence in a Zn-based metal organic framework (MOF) material upon nitroaromatic molecule adsorption. We present evidence based on ab initio simulations, coupled with in situ IR spectroscopy and photoluminescence measurements, showing that quenching occurs as the result of a shift of the lowest unoccupied orbital from the MOF host to the guest molecule. Our results provide a mechanistic understanding of quenching of photoluminescence in MOFs and are of importance for chemical sensing applications, where they aid the design of novel MOFs with increased sensing selectivity. |
| Databáze: | OpenAIRE |
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