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Divergent Adsorption-Dependent Luminescence of Amino-Functionalized Lanthanide Metal-Organic Frameworks for Highly Sensitive NO2 Sensors
Journal article   Peer reviewed

Divergent Adsorption-Dependent Luminescence of Amino-Functionalized Lanthanide Metal-Organic Frameworks for Highly Sensitive NO2 Sensors

Arturo Gamonal, Chen Sun, A. Lorenzo Mariano, Estefania Fernandez-Bartolom, Elena Guerrero-SanVicente, Bess Vlaisavljevich, Javier Castells-Gil, Carlos Marti-Gastaldo, Roberta Poloni, Reinhold Wannemacher, …
The journal of physical chemistry letters, Vol.11(9), pp.3362-3368
05/07/2020
DOI: 10.1021/acs.jpclett.0c00457
PMID: 32195588
url
https://hal.science/hal-02863400View
Open Access

Abstract

A novel gas sensing mechanism exploiting lanthanide luminescence modulation upon NO2 adsorption is demonstrated here. Two isostructural lanthanide-based metal-organic frameworks (MOFs) are used, including an amino group as the sensitive recognition center for NO2 molecules. The transfer of energy from the organic ligands to Ln is strongly dependent on the presence of NO2, resulting in an unprecedented photoluminescent sensing scheme. Thereby, NO2 exposition triggers either a reversible enhancement or a decrease in the luminescence intensity, depending on the lanthanide ion (Eu or Tb). Our experimental studies combined with density functional theory and complete active space self-consistent field calculations provide an understanding of the nature and effects of NO2 interactions within the MOFs and the signal transduction mechanism.
Chemistry Chemistry, Physical Materials Science Materials Science, Multidisciplinary Nanoscience & Nanotechnology Physical Sciences Physics Physics, Atomic, Molecular & Chemical Science & Technology Science & Technology - Other Topics Technology

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