Affiliation: | a Key Laboratory of Supramolecular Structure and Spectroscopy, Jilin University, Changchun 130023, People's Republic of China b Department of Chemistry, Jilin University, Changchun 130023, People's Republic of China |
Abstract: | An oligo-phenykene vinylene derivative 4,4′-(1,4-phenylene dithenylene)-bis-(N-methyl pyridinium iodide) (OPVD) was introduced into poly(hydroxyethyl methacrylate) (PHEMA)-impregnated silica composite film by the sol–gel process. The X-ray diffraction and UV–VIS reveal that this method can restrict the crystallization of OPVD and OPVD molecules tend to form J-aggregates in the composite film. The results of photoluminescence of OPVD in the composite film indicate that as compared with OPVD itself, the emission peak of OPVD in the composite film undergoes a blue shift about 80 nm, fluorescence intensity enhances and the photostability is much better, which make such composite film of more practical significance. |