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Quenching of photoluminescence in a Zn-MOF sensor by nitroaromatic molecules

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Abstract

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.

Graphical abstract: Quenching of photoluminescence in a Zn-MOF sensor by nitroaromatic molecules

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Publication details

The article was received on 12 Dec 2018, accepted on 30 Jan 2019 and first published on 05 Feb 2019


Article type: Paper
DOI: 10.1039/C8TC06281A
Citation: J. Mater. Chem. C, 2019, Advance Article

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    Quenching of photoluminescence in a Zn-MOF sensor by nitroaromatic molecules

    S. Jensen, K. Tan, W. Lustig, D. Kilin, J. Li, Y. J. Chabal and T. Thonhauser, J. Mater. Chem. C, 2019, Advance Article , DOI: 10.1039/C8TC06281A

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