Department of Chemistry, Jilin University, Changchun 130021, People's Republic of China.
J Colloid Interface Sci. 2010 Oct 15;350(2):396-401. doi: 10.1016/j.jcis.2010.06.068. Epub 2010 Jul 3.
Novel bifunctional magnetic-photoluminescent nanofibers based on Fe(2)O(3) nanoparticles and europium complex Eu(DBM)(3)(Bath) (DBM=dibenzoylmethanate, Bath=bathophenanthroline) have been prepared by electrospinning. Extensive characterizations of the resulting bifunctional nanofibers have been performed using X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX) analysis, transmission electron microscopy (TEM), and vibrating sample magnetometer (VSM). The influence on photoluminescence properties of bifunctional nanofibers of the addition of Fe(2)O(3) nanoparticles has also been studied. The results indicate that due to decreased symmetry in the composite nanofibers the excitation bands of the composite nanofibers are split into two different components. Furthermore, the existence of the Fe(2)O(3) and polymer hybrid matrixes can improve the thermal and photo stability of the europium complex and elongate the fluorescence lifetime of the europium complex.
基于 Fe(2)O(3) 纳米粒子和铕配合物 Eu(DBM)(3)(Bath)(DBM=dibenzoylmethanate,Bath=bathophenanthroline)的新型双功能磁性-光致发光纳米纤维已通过静电纺丝制备而成。使用 X 射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、能量色散 X 射线(EDX)分析、透射电子显微镜(TEM)和振动样品磁强计(VSM)对所得双功能纳米纤维进行了广泛的表征。还研究了添加 Fe(2)O(3) 纳米粒子对双功能纳米纤维光致发光性能的影响。结果表明,由于复合纳米纤维中对称性的降低,复合纳米纤维的激发带分裂成两个不同的分量。此外,Fe(2)O(3)和聚合物混合基质的存在可以提高铕配合物的热稳定性和光稳定性,并延长铕配合物的荧光寿命。