Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou730000, China.
Institute of National Nuclear Industry, Frontiers Science Center for Rare Isotope, School of Nuclear Science and Technology, Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, Lanzhou730000, China.
Inorg Chem. 2022 Dec 12;61(49):19658-19662. doi: 10.1021/acs.inorgchem.2c03078. Epub 2022 Nov 30.
Lanthanide metal-organic framework (Ln-MOF) luminescent sensors monitoring the HO content in DO are still rare. We designed and built a hydrophilic mixed Ln-MOF (EuTb-MOF) monitoring the HO content in DO. By designing a ligand and controlling the synthesis method, we achieved a balance between the structural stability and sensing capacity. When the HO content ranges from 0 to 100%, the photoluminescence color of EuTb-MOF can change from yellow to green, which can be observed by the naked eye. The mechanism is that the photoluminescence intensity of Eu decreases faster than that of Tb when the HO content increases. The sensing mechanism was studied further by transient fluorescence spectrometry.
镧系金属-有机骨架（Ln-MOF）荧光传感器监测溶解氧中的 HO 含量仍然很少。我们设计并构建了一种亲水性混合 Ln-MOF（EuTb-MOF）来监测溶解氧中的 HO 含量。通过设计配体和控制合成方法，我们在结构稳定性和传感能力之间取得了平衡。当 HO 含量在 0 到 100%范围内时，EuTb-MOF 的光致发光颜色可以从黄色变为绿色，肉眼可以观察到。其机制是当 HO 含量增加时，Eu 的光致发光强度比 Tb 下降得更快。通过瞬态荧光光谱进一步研究了传感机制。
