A novel poly[(N-vinylimidazole)-co-(1-pyrenylmethyl methacrylate)] ferric complex with fluorescence and superparamagnetism

作者：Cui, Jian^*; Yang, Shaobei; Zhang, Jinfang; Zhao, Shuai; Yan, Yehai

来源：RSC Advances, 2012, 2(32): 12224-12230.

DOI：10.1039/c2ra22395c

• IONIC LIQUIDS
• RADICAL-POLYMERIZATION
• CARBON NANOTUBES
• NANOPARTICLES
• LUMINESCENCE
• PERFORMANCE
• TRANSITION
• CATALYST
• HYBRIDS

Due to its unique physical and chemical properties, the polymer N-vinylimidazole (VI), either as a homopolymer or copolymer, has a large number of important applications. Currently, technological advances have identified further uses for it and there are practical demands for multiply functional forms of the polymer; e. g., fluorescence and magnetism in one VI-polymer material. Toward this end, a novel poly[(N-vinylimidazole)-co-(1-pyrenylmethyl methacrylate)] (VI-co-PyMMA) ferric complex prepared by complexing a VI-co-PyMMA copolymer with 1-chlorobutane and FeCl3 in succession is presented in this work. The complexed FeCl3, which predominately exists as the FeCl4- anion, endows the resultant material with superparamagnetism; while the presence of pyrene moieties allows the complex to exhibit additional fluorescence. Both the fluorescence and magnetism exhibit a strong dependence on the content of the complexed FeCl3 but in opposite manners. The preferred complex, S-4, shows a balance of the properties, with a fluorescence quantum yield of 0.13 and a magnetic susceptibility of 16.1 x 10(-6) emu g(-1). Along with re-dispersibility, this single-component fluorescent-magnetic material may replace some corresponding multi-component nanomaterials, where the polymer component acts only as a protective coating and/or an organic fluorophore and the magnetic performance is usually provided by magnetic nanoparticles (MNPs). It may find potential applications in the booming biotechnology field.

• 出版日期2012
• 单位青岛科技大学