期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 11, 期 9, 页码 3362-3368出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.0c00457
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资金
- Spanish MINECO [CTQ2016-80635-P]
- Ramon y Cajal Research program [RYC-2014-16866]
- Comunidad Autonoma de Madrid [PEJD-2017-PRE/IND4037]
- 'Severo Ochoa' Programme for Centres of Excellence in RD (MINECO) [SEV-2016-0686]
- U.S. Department of Energy Office of Science User Facility [DE-AC02-05CH11231]
- European Union structural funds
- Comunidad de Madrid MAD2D-CM [S2013/MIT-3007]
- NMAT2DCM [S2018/NMT-4511]
- MINECO [RTI2018-097508-B-I00, MAT2015-71879-P]
- GENCI under CINES [A0060907211]
- French National Agency for Research [ANR-15-CE06-0003-01]
- [2018012561]
- [PCIN-2015-169-C02-01/02]
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.
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