Jin Yang, An Xiaolong, Ge Mingqiao
College of Textile and Clothing, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
Materials (Basel). 2018 Mar 15;11(3):425. doi: 10.3390/ma11030425.
In this study, we fabricated a heat-stimulated luminous fiber (HSLF) by wet spinning. The HSLF consists of Sr₂ZnSi₂O₇: Eu, Dy (SZSO), Y₂O₂S: Eu, Mg, Ti (YOS), and heat-sensitive green TF-G pigment (HSGP). SZSO and YOS serve as a source of luminescence to yield a long afterglow system. HSGP is a heat-stimulating agent which develops the link between luminescence and temperature for HSLF. The luminescence of the HSLF is dull below 30 °C, but vivid above 30 °C. The luminescence of HSLFs can be stimulated by low heat (human body temperature). Emission spectra were recorded at 20 °C and 30 °C to investigate the heat-stimulated luminescent performance of HSLFs. HSLF is a smart material which can discern the exciting light to change color because of the photo-thermal effect. This characteristic provides optimum conditions for SZSO and YOS to store energy. The results demonstrated that most luminescence from SZSO and YOS could be absorbed by HSGP at 20 °C, but the luminescence could be liberated at 30 °C. The heat-stimulated phenomenon could also be verified by afterglow and the naked eye.
在本研究中，我们通过湿法纺丝制备了一种热刺激发光纤维（HSLF）。该HSLF由Sr₂ZnSi₂O₇: Eu, Dy（SZSO）、Y₂O₂S: Eu, Mg, Ti（YOS）和热敏绿色TF-G颜料（HSGP）组成。SZSO和YOS作为发光源以产生长余辉体系。HSGP是一种热刺激剂，它建立了HSLF发光与温度之间的联系。HSLF在30℃以下发光暗淡，但在30℃以上则很明亮。HSLF的发光可被低热（人体温度）刺激。在20℃和30℃下记录发射光谱，以研究HSLF的热刺激发光性能。HSLF是一种智能材料，由于光热效应，它能辨别激发光并改变颜色。这一特性为SZSO和YOS储存能量提供了最佳条件。结果表明，在20℃时，SZSO和YOS的大部分发光可被HSGP吸收，但在30℃时发光可被释放。热刺激现象也可以通过余辉和肉眼得到验证。
