静电纺丝制备Eu(BA)3phen/PANI/PVP光电双功能复合纳米纤维及其性能

采用静电纺丝技术将聚苯胺(PANI)和稀土配合物Eu(BA)3phen掺杂到高分子材料聚乙烯吡咯烷酮(PVP)中, 制备出新型的具有光电双功能的Eu(BA)3phen/PANI/PVP复合纳米纤维. 采用扫描电子显微镜、 X射线能量色散谱仪、 荧光光谱仪及宽频介电松弛谱仪对样品进行了表征. 实验结果表明, 复合纳米纤维直径为(270±31) nm. 在275 nm紫外光激发下, Eu(BA)3phen/PANI/PVP复合纳米纤维发射出主峰位于580, 594和617 nm的红光, 对应于Eu3+的 5D0→7F0, 5D0→7F1和5D0→7F2跃迁. 当mEu(BA)3phen]:m(PANI):m(PVP)=15:10:100 时, 复合纳米纤维的荧光发射最强. 复合纤维的电导率随PANI含量的增大而升高. 在m(PANI):m(PVP)=50:100时, 其电导率在高频(106 Hz)下达到1.5×10-6 S/cm.

Electrospinning Preparation and Properties of Eu(BA) 3phen/PANI/PVP Luminescence-electricity Bifunctional Composite Nanofibers

Luminescence-electricity bifunctional Eu(BA)3phen/PANI/PVP composite nanofibers were prepared through the doping of polyaniline(PANI) and rare earth complex in polyrinyl phrrolidone(PVP) via electrospinning. Scanning electron microscope(SEM), energy dispersive spectrometer(EDS), fluorescence spectrometer and broadband dielectric spectrometer were used to characterize the samples. The results indicated that the average diameter of the Eu(BA)3phen/PANI/PVP composite nanofibers was (270±31) nm. Under excitation of 275 nm, the Eu(BA)3phen/PANI/PVP composite nanofibers emitted the predominant emission at 580, 594 and 617 nm, corresponding to 5D0→7F0, 5D0→7F1 and 5D0→7F2 transitions of Eu3+, respectively. The strongest emission intensity occurred when the mass ratios of Eu(BA)3phen: PANI: PVP was 15: 10: 100, the electric conductivity of the composite nanofibers increased with the increase of PANI content, and reached 1.5×10-6 S/cm in high frequency electric field(106 Hz) when the mass ratio of PANI to PVP was 50%.