A novel dual-emission ratio luminescent probe (Eu(DPA)₃@UIO-66-NH₂) for the detection of Cu${}^{2+}$ in an aqueous solution was successfully prepared by linking the Zr-MOFs material UIO-66-NH₂ with the lanthanide complex Na₃[Eu(DPA)₃] through the interaction between functional groups. The synthesized Eu(DPA)₃@UIO-66-NH₂ inherits the advantages of MOFs and lanthanide complexes, and it not only has excellent luminescence performance but also shows good dispersion and structural stability in aqueous solution. The characteristics of dual-emission light can achieve specific ratiometric luminescence detection of Cu${}^{2+}$. In addition, the probe exhibited high sensitivity for the detection of Cu${}^{2+}$with a detection limit as low as 0.89 $\mu$M. It can provide an efficient and stable platform for the convenient and rapid detection of Cu${}^{2+}$ in aqueous solutions and has the potential for development applications.

一种用于检测 Cu 的新型双发射比发光探针 (Eu(DPA) ₃ @UIO-66-NH _{2 )}${}^{2+}$通过官能团之间的相互作用，将Zr-MOFs材料UIO-66-NH ₂与稀土配合物Na ₃ [Eu(DPA) ₃ ]连接，成功制备了水溶液。合成的Eu(DPA) ₃ @UIO-66-NH ₂继承了MOFs和稀土配合物的优点，不仅具有优异的发光性能，而且在水溶液中表现出良好的分散性和结构稳定性。双发射光的特性可实现Cu的特定比率发光检测${}^{2+}$。此外，该探针对 Cu 的检测表现出高灵敏度。${}^{2+}$检测限低至 0.89$\mu$M.可为方便快速的Cu检测提供高效稳定的平台${}^{2+}$水溶液，具有开发应用潜力。