In this paper, we have prepared europium doped Ni(BTC) (Ni = Nickel, BTC = 1,3,5- benzene tricarboxylic acid) MOF (Metal-Organic Framework), Eu@Ni(BTC). This MOF was characterized by PXRD (powder X-ray diffraction), FT-IR (Fourier-transform infrared spectroscopy), N₂ adsorption isotherm, TGA (thermogravimetric analysis), X-ray photoelectron spectroscopy (XPS), Field Emission Scanning Electron Microscopy- Energy Dispersive Spectroscopy (FESEM-EDS) and Inductively coupled plasma mass spectrometry (ICP-MS). This MOF was then used as an optical sensor for the detection of heteroaromatic compounds. It was observed that the emission of Eu@Ni(BTC) was selectively and completely quenched by thiophene and partially quenched by pyrrole. The quenching efficiency of this sensor with thiophene and pyrrole was calculated to be 2.7 × 10⁵ and 7.5 × 10³, with a detection limit of 0.2 and 8.4 ppm, respectively. This sensor has recyclability up to five cycles and was also applied for the practical detection of thiophene from water.

在本文中，我们制备了铕掺杂的 Ni(BTC) (Ni = Nickel, BTC = 1,3,5-苯三羧酸) MOF (Metal-Organic Framework), Eu@Ni(BTC)。该 MOF 通过 PXRD（粉末 X 射线衍射）、FT-IR（傅里叶变换红外光谱）、N ₂吸附等温线、TGA（热重分析）、X 射线光电子能谱（XPS）、场发射扫描电子显微镜-能量色散谱（FESEM-EDS）和电感耦合等离子体质谱（ICP-MS）。然后将该 MOF 用作检测杂芳族化合物的光学传感器。观察到 Eu@Ni(BTC) 的发射被噻吩选择性地完全猝灭，部分被吡咯猝灭。该传感器与噻吩和吡咯的淬灭效率计算为 2.7 × 10 ⁵和 7.5 × 10 ³，检测限分别为 0.2 和 8.4 ppm。该传感器具有多达五个循环的可回收性，还应用于实际检测水中的噻吩。