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采用静电纺丝技术合成Tb(BA)3phen/PVP复合纤维.扫描电镜分析表明,纤维表面光滑,无交联,直径集中分布在350nm.红外光谱分析表明,Tb3+与配体发生键合,在424cm-1出现了Tb3+-O2-特征振动峰.紫外-可见吸收光谱分析表明,Tb(BA)3phen/PVP复合物的吸收带发生蓝移.激发光谱分析表明,Tb(BA)3phen/PVP复合纤维在214-355nm之间有较宽的吸收谱带,对应着配体的π→π*跃迁,最佳吸收波长位于275nm.发射光谱分析表明,最强发射峰位于545nm处,对应着Tb3+的5 D4→7F5跃迁.
Tb (BA) 3phen / PVP composite fibers were synthesized by electrospinning technique. Scanning electron microscopy analysis showed that the fiber surface was smooth and without cross-linking, and the diameter was concentrated at 350nm.The infrared spectra showed that Tb3 + -1 appeared Tb3 + -O2- characteristic vibration peak.Ultraviolet-visible absorption spectroscopy analysis showed that the Tb (BA) 3phen / PVP complexes blue shift of the absorption band.The excitation spectrum analysis showed that Tb (BA) 3phen / PVP composite fiber In the range of 214-355nm, there is a broad absorption band corresponding to the π → π * transition of the ligand with the best absorption wavelength at 275nm. The emission spectra show that the strongest emission peak is located at 545nm, which corresponds to 5 D4 → 7F5 transition.