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首页> 外文期刊>Optical Materials >Fabrication of the PLA/Sr_2MgSi_20_7:Eu~(2+), DY~(3+) long-persistent luminescence composite fibers by electrospinning
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Fabrication of the PLA/Sr_2MgSi_20_7:Eu~(2+), DY~(3+) long-persistent luminescence composite fibers by electrospinning

机译：电纺丝法制备PLA / Sr_2MgSi_20_7：Eu〜（2+），DY〜（3+）长发光复合纤维

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摘要

A novel one-dimensional PLA/Sr_2MgSi_20_7:Eu~(2+), Dy~(3+) composite fibers composed of long-persistent luminescence nanoparticles of Sr_2MgSi_20_7:Eu~(2+), DY~(3+) and ploy lactic acid were successfully synthesized by means of electrospinning. Phase, morphology and luminescence properties were examined. The composite fibers contain 12.5 wt% of nanoparticles. It was found that the fibers (diameter 1.5 urn) with nanoparticles (size 200 nm) have an emission band from 410 nm to 590 nm and a major emission peak at 468 nm. It's strongest excitation peak was at 360 nm. Similarly, it's phosphorescent emission spectra have an emission band from 410 nm to 590 nm and a major emission peak at 468 nm. Decay curves of the composite fiber have a similar tendency with Sr_2MgSi_20_7:Eu~(2+), Dy~(3+) pure powder, but with lower intensity. The fibers have the properties of both long-persistent luminescence nanoparticles and PLA of polymer fibers, combining phosphorescence, fluorescence, plasticity, elasticity, self-degradation altogether. As these characters of above, the fibers has applications possibility in textiles, optical detectors, and vivo imaging.
机译：由Sr_2MgSi_20_7：Eu〜（2 +），DY〜（3+）和多聚乳酸组成的长效发光纳米粒子组成的新型一维PLA / Sr_2MgSi_20_7：Eu〜（2 +），Dy〜（3+）复合纤维通过静电纺丝成功合成了丙烯酸。检查了相，形态和发光性质。复合纤维包含12.5wt％的纳米颗粒。发现具有纳米颗粒（尺寸为200nm）的纤维（直径1.5μm）具有从410nm至590nm的发射带和在468nm的主要发射峰。它的最强激发峰在360 nm。同样，它的磷光发射光谱的发射带在410 nm至590 nm之间，主要发射峰在468 nm处。复合纤维的衰减曲线与Sr_2MgSi_20_7：Eu〜（2 +），Dy〜（3+）纯粉具有相似的趋势，但强度较低。该纤维具有长效发光纳米粒子和聚合物纤维的PLA的特性，将磷光，荧光，可塑性，弹性，自降解结合在一起。由于以上这些特征，纤维在纺织品，光学检测器和体内成像中具有应用可能性。

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