镧系元素
等结构
发光
吸附
金属有机骨架
密度泛函理论
光致发光
分子
材料科学
光化学
纳米技术
化学
化学物理
离子
物理化学
计算化学
光电子学
结晶学
有机化学
晶体结构
作者
Arturo Gamonal,Chen Sun,Lorenzo A. Mariano,Estefanía Fernández-Bartolomé,Elena Guerrero-SanVicente,Bess Vlaisavljevich,Javier Castells‐Gil,Carlos Martí‐Gastaldo,Roberta Poloni,Reinhold Wannemacher,Juan Cabanillas‐González,José Sánchez Costa
标识
DOI:10.1021/acs.jpclett.0c00457
摘要
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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