| 초록 |
A reversible and repeatable polymeric probe has been designed and synthesized for the detection and separation of picric acid (PA) with great sensitivity in aqueous media. Here, random terpolymer [p(DMA-co-BPAm-co-GMA)](P1) consisting of N,N-dimethylacrylamide (DMA), N-(4-benzoylphenyl)acrylamide (BPAm), and glycidyl methacrylate (GMA) was synthesized via free radical polymerization (FRP) with feed ratio 95:1:4. P1 was transformed to the P2 by subsequent ring-opening reaction. In the presence of PA, P2 exhibited selective and rapid sensing properties in aqueous media via turn-off fluorescence emission by photoinduced electron transfer (PET) process. In order to demonstrate the reversibility of the system, P2 was immobilized on a quartz slide followed by the exposure to UV light. Furthermore, the mixture of various nitroaromatic compounds by the P2 film was achieved for the separation of PA. Whereas the detection process of PA was reversible over multiple cycles and can be recycled. |
