It is necessary to develop excellent sensors for volatile organic compounds (VOCs) detection from the perspective of environmental protection and human health. Luminescent lanthanide metal‐organic frameworks (MOFs) have many advantages such as porosity, luminescence, and structural controllability, making them very suitable as luminescent sensing materials. Based on a functional oriented strategy, novel Ln‐MOFs are successfully constructed and their structure and properties are characterized in detail. A series of vapor luminescence sensing tests have shown that Eu/Tb doped L1‐Eu0.1/Tb0.9 not only exhibits high selectivity for alcohols, especially ethanol vapor, but also has high sensitivity and extremely low detection limit (9.76 mg L−1). To the knowledge, there are no reports on ratio luminescence sensors based on Ln‐MOFs for ethanol vapor, especially those with such excellent performance. Crystal structure determination demonstrates that ethanol binds to the framework through multiple hydrogen bonding interactions, altering the energy transfer efficiency between Tb3+ and Eu3+ to achieve ratio luminescence detection. In addition, L1‐Eu0.1/Tb0.9 has good repeatability, the prepared thin film sensing material also demonstrates the advantages of portability and processability. This work can provide some experience for the development of VOCs sensing materials with better performance.

中文翻译：

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新型稀土 MOF 的功能构建，用于乙醇蒸气的高效比率发光检测

从环境保护和人类健康的角度出发，有必要开发性能优异的挥发性有机化合物（VOCs）检测传感器。发光镧系金属有机框架（MOF）具有孔隙率、发光性和结构可控性等许多优点，使其非常适合作为发光传感材料。基于功能导向策略，成功构建了新型Ln-MOFs，并对其结构和性能进行了详细表征。一系列蒸气发光传感测试表明，Eu/Tb 掺杂的 L1-Eu0.1/铽0.9不仅对醇类特别是乙醇蒸气表现出高选择性，而且具有高灵敏度和极低的检测限（9.76 mg·L−1）。据了解，目前还没有基于Ln-MOFs的乙醇蒸气比率发光传感器的报道，特别是那些具有如此优异性能的传感器。晶体结构测定表明乙醇通过多个氢键相互作用与框架结合，改变了 Tb 之间的能量转移效率3+和欧盟3+实现比值发光检测。此外，L1-Eu0.1/铽0.9具有良好的重复性，所制备的薄膜传感材料还表现出便携性和可加工性的优势。该工作可为开发性能更好的VOCs传感材料提供一些经验。