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Photoluminescent polymer-based smart window reinforced with electrospun glass nanofibres
Luminescence ( IF 3.2 ) Pub Date : 2023-06-09 , DOI: 10.1002/bio.4534
Mohamed El-Newehy 1 , Badr M Thamer 1 , Meera Moydeen Abdul Hameed 1 , Hany El-Hamshary 1
Luminescence ( IF 3.2 ) Pub Date : 2023-06-09 , DOI: 10.1002/bio.4534
Mohamed El-Newehy 1 , Badr M Thamer 1 , Meera Moydeen Abdul Hameed 1 , Hany El-Hamshary 1
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Poly(vinyl chloride) (PVC) was reinforced with electrospun glass nanofibres (EGN) to develop photochromic and afterglow materials such as smart windows and anti-counterfeiting prints. A colourless electrospun glass nanofibres@poly(vinyl chloride) (EGN@PVC) sheet was prepared by physical integration of lanthanide-doped aluminate nanoparticles (LANP). The low concentrations of LANP in the photochromic and photoluminescent EGN@PVC hybrids displayed fluorescence emission with instant reversibility. EGN@PVC with the highest phosphor concentrations showed persistent phosphorescence emission with slow reversibility. Based on the results of the Commission Internationale de l'éclairage Laboratory and luminescence spectroscopy, the translucent EGN@PVC samples became green in the presence of ultraviolet illumination and greenish-yellow in the absence of light. According to scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses, the morphological study of EGN and LANP showed diameters of 75–95 and 11–19 nm, respectively. The morphology of the EGN@PVC substrates was studied using SEM, X-ray fluorescence, and energy-dispersive X-ray spectroscopy. The mechanical characteristics of PVC were enhanced by reinforcement with EGN as a roughening agent. When comparing the scratching resistance of LANP-free substrate to photoluminescent EGN@PVC substrates, it was observed that the latter was much superior. The photoluminescence spectra were reported to have an emission peak at 519 nm when excited at 365 nm. These findings demonstrated that the luminous transparent EGN@PVC composites had improved superhydrophobic and UV-blocking characteristics.
中文翻译：
采用电纺玻璃纳米纤维增强的光致发光聚合物智能窗
使用电纺玻璃纳米纤维 (EGN) 增强聚氯乙烯 (PVC)，以开发光致变色和余辉材料，例如智能窗户和防伪印刷品。通过物理整合镧系元素掺杂的铝酸盐纳米颗粒（LANP）制备了无色电纺玻璃纳米纤维@聚氯乙烯（EGN@PVC）片材。光致变色和光致发光 EGN@PVC 混合物中的低浓度 LANP 显示出具有即时可逆性的荧光发射。荧光粉浓度最高的 EGN@PVC 表现出持久的磷光发射，且可逆性较慢。根据国际照明委员会实验室和发光光谱的结果，半透明的EGN@PVC样品在有紫外线照射的情况下变成绿色，在没有光照的情况下变成黄绿色。根据扫描电子显微镜（SEM）和透射电子显微镜（TEM）分析，EGN和LANP的形态研究显示直径分别为75-95和11-19 nm。使用 SEM、X 射线荧光和能量色散 X 射线光谱研究了 EGN@PVC 基材的形貌。使用EGN作为粗化剂增强PVC的机械特性得到增强。当比较不含 LANP 的基材与光致发光 EGN@PVC 基材的耐刮擦性时，发现后者要优越得多。据报道，当在 365 nm 处激发时，光致发光光谱在 519 nm 处具有发射峰。这些发现表明，发光透明 EGN@PVC 复合材料具有改善的超疏水和紫外线阻挡特性。
更新日期：2023-06-09
中文翻译：
采用电纺玻璃纳米纤维增强的光致发光聚合物智能窗
使用电纺玻璃纳米纤维 (EGN) 增强聚氯乙烯 (PVC)，以开发光致变色和余辉材料，例如智能窗户和防伪印刷品。通过物理整合镧系元素掺杂的铝酸盐纳米颗粒（LANP）制备了无色电纺玻璃纳米纤维@聚氯乙烯（EGN@PVC）片材。光致变色和光致发光 EGN@PVC 混合物中的低浓度 LANP 显示出具有即时可逆性的荧光发射。荧光粉浓度最高的 EGN@PVC 表现出持久的磷光发射，且可逆性较慢。根据国际照明委员会实验室和发光光谱的结果，半透明的EGN@PVC样品在有紫外线照射的情况下变成绿色，在没有光照的情况下变成黄绿色。根据扫描电子显微镜（SEM）和透射电子显微镜（TEM）分析，EGN和LANP的形态研究显示直径分别为75-95和11-19 nm。使用 SEM、X 射线荧光和能量色散 X 射线光谱研究了 EGN@PVC 基材的形貌。使用EGN作为粗化剂增强PVC的机械特性得到增强。当比较不含 LANP 的基材与光致发光 EGN@PVC 基材的耐刮擦性时，发现后者要优越得多。据报道，当在 365 nm 处激发时，光致发光光谱在 519 nm 处具有发射峰。这些发现表明，发光透明 EGN@PVC 复合材料具有改善的超疏水和紫外线阻挡特性。
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