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 thermo-stability,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.