Abstract By employing a rational approach, we prepared a novel kind of luminescent europium-centered hybrid material named Eu(tta)3NCP-TiO2. The resulting material was characterized by FT-IR spectra, SEM, X-ray diffraction, thermogravimetric analysis, and photoluminescence spectra. The hybrid material features the combined advantages of the europium complex and the titania host, exhibiting not only good thermostability, but also long luminescence lifetime. Owing to the excellent luminescence of this material, the application in detecting organic small molecule solvents and metal ions was explored systematically. Significantly, Eu(tta)3NCP-TiO2 exhibits superior detection for nitrobenzene molecule and Cu2+ ion in DMF (N,N-dimethylformamide) medium. Furthermore, the limit of detection (LOD) of Eu(tta)3NCP-TiO2 for nitrobenzene and Cu2+ ion can be counted as 5.593 × 10−5 and 9.566 × 10−5 mol/L, respectively. The results demonstrate that Eu(tta)3NCP-TiO2 can serve as an efficient fluorescence probe for the detection of sensing of nitrobenzene and Cu2+ ion.

中文翻译：

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新型发光铕中心杂化材料通过2-取代咪唑并菲咯啉与有机修饰的二氧化钛共价接枝用于荧光传感

摘要 我们采用合理的方法制备了一种新型的发光铕中心杂化材料Eu(tta)3NCP-TiO2。所得材料通过 FT-IR 光谱、SEM、X 射线衍射、热重分析和光致发光光谱进行表征。该杂化材料结合了铕配合物和二氧化钛主体的优点，不仅具有良好的热稳定性，而且发光寿命长。由于该材料具有优异的发光性，因此系统地探索了其在有机小分子溶剂和金属离子检测中的应用。值得注意的是，Eu(tta)3NCP-TiO2 对 DMF（N,N-二甲基甲酰胺）介质中的硝基苯分子和 Cu2+ 离子具有出色的检测能力。此外，Eu(tta)3NCP-TiO2 对硝基苯和 Cu2+ 离子的检测限 (LOD) 分别为 5.593 × 10-5 和 9.566 × 10-5 mol/L。结果表明，Eu(tta)3NCP-TiO2 可以作为一种有效的荧光探针，用于检测硝基苯和Cu2+ 离子的传感。