Transparent films based on functionalized Poly(ionic liquids) coordinating to photoactive Lanthanide(Eu3+,Tb3+) and Poly(methyl methacrylate): Luminescence and chemical sensing

Two kinds of hybrid luminescence films ([C 8 VIM][Eu (nta) 4 ]@PMMA and [C 8 VIM][Tb (acac) 4 ]@PMMA) have been synthesized by the copolymerization of MMA with lanthanide functionalized ionic liquid [C 8 VIM][Eu (nta) 4 ]. The structure and composition of the as-synthesized films have been characterized by 1 HNMR, XPS , FTIR, UV–vis, XRD , TGA and SEM. In addition, the photophysical properties of as-synthesized films have been investigated in detail by luminescence spectroscopy. It was found that the transparent and thermal stability of as-synthesized films are improved by the long chains of PMMA . More significantly, [C 8 VIM][Eu (nta) 4 ] @PMMA exhibits the improvement of photo physical properties (ƞ = 52.6%) and is selected as the representative sample to examine the potential fluorescence sensing of metal ions and anions. It has been showed highly selective and sensitive fluorescence sensing for Cu 2+ and CrO 4 2− . Meanwhile, [C 8 VIM][Eu (nta) 4 ]@PMMA exhibits a good stability in the aqueous solution, which is further used as fluorescence probe for detecting CO 3 2− . The good stability, sensitive fluorescence response and good mechanical processing properties of [C 8 VIM][Eu (nta) 4 ]@PMMA show a great potential to establish a fast response anion and cationic of aqueous solution fluorescence colorimetric sensor devices.