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通过静电纺丝法制得了含有稀土铽配合物(Tb(AA)3Phen)的聚乙烯吡咯烷酮(PVP)的荧光纤维丝。通过考察纺丝液的浓度,静电纺丝过程中的电压、溶剂配比以及电导率对PVP纤维丝形貌的影响,制备出表面光滑、直径均一、尺寸大小在80~150 nm之间的纤维。荧光性能测试显示,Tb(AA)3Phen/PVP纤维的荧光强度随着Tb(AA)3Phen含量的增加而增加,稀土配合物含量为15%时,纤维的荧光强度达到最强,之后出现浓度猝灭现象;通过X射线衍射(XRD)、透射电镜(TEM)等测试表明,Tb(AA)3Phen在PVP纤维中以分子簇或极小颗粒(小于10 nm)的状态存在,这种良好的分散效果减小了电子在跃迁过程中的非辐射跃迁几率,从而增强了纤维的荧光强度和荧光寿命。
Fluorescent filaments of polyvinylpyrrolidone (PVP) containing a rare earth terbium complex (Tb (AA) 3 Phen) were prepared by electrospinning. The effects of the concentration of spinning solution, the voltage in the electrospinning process, the solvent ratio and the conductivity on the morphology of PVP filaments were investigated, and the fibers with smooth surface, uniform diameter and size of 80 ~ 150 nm were prepared . Fluorescence test showed that the fluorescence intensity of Tb (AA) 3Phen / PVP fibers increased with the increase of Tb (AA) 3Phen content, and the fluorescence intensity reached the strongest after the content of rare earth complex was 15% X-ray diffraction (XRD), transmission electron microscopy (TEM) and other tests show that Tb (AA) 3Phen exists in the state of clusters or tiny particles (less than 10 nm) in the PVP fibers. This good dispersion The effect reduces the probability of non-radiative transition of electrons in the transition process, thereby enhancing the fluorescence intensity and fluorescence lifetime of the fiber.