Photochromism is an interesting approach to improve the anticounterfeiting of various commercial commodities. To introduce a transparent anticounterfeiting nanocomposite, it has been crucial to enhance the engineering processing of the anticounterfeiting materials. In this context, we introduce highly phosphorescent rare-earth aluminate nano-sized particles (REAN)/recycled polyester waste (PET) nanofibrous films by solution blowing spinning for anticounterfeiting purposes. The composite nanofibers demonstrated UV-motivated photochromic anticounterfeiting performance. To warranty the translucent property of REAN@PET, it is necessary to immobilize REA in the nano-sized form for an improved dispersion without agglomeration in the polyester nanofibrous bulk. Various nanofibers films of diverse emission characteristics were developed employing various ratios of REAN. Transmission electron microscopy and X-ray diffraction were utilized to determine the morphology of REAN to demonstrate diameters of 4–9 nm. The energy-dispersive X-ray analysis, infrared spectra, X-ray fluorescent analysis, elemental mapping, and scanning electron microscope were employed to study the morphologies, optical transmittance, elemental contents, and mechanical properties of the prepared photo-induced chromic nanofibers. The nanofiber diameter in the REAN@PET film was reported in the range of 180–220 nm. The REAN@PET nanofibrous film demonstrated an excitation band at 365 nm in association with an emission band at 519 nm. The solution blown spun REAN@PET nanofibrous films showed an improved superhydrophobicity with raising the REAN content. When excited under UV supply, the transparent nanofibers showed a rapid and reversible dual-mode fluorescent photochromism to green without fatigue. The present anti-counterfeiting films can be reported as a simple and effective approach to build versatile materials to introduce an ideal marketplace with economical and community benefits at low-cost.

光致变色是改善各种商业商品防伪的有趣方法。为了引入透明的防伪纳米复合材料，加强防伪材料的工程加工至关重要。在此背景下，我们通过溶液吹制纺丝技术引入高磷光稀土铝酸盐纳米颗粒 (REAN)/再生聚酯废料 (PET) 纳米纤维薄膜，用于防伪目的。复合纳米纤维表现出紫外线驱动的光致变色防伪性能。为了保证 REAN@PET 的半透明特性，有必要将 REA 固定在纳米尺寸的形式中，以改善分散性，而不会在聚酯纳米纤维本体中结块。采用各种比例的 REAN 开发了具有不同发射特性的各种纳米纤维薄膜。透射电子显微镜和 X 射线衍射用于确定 REAN 的形态，以证明直径为 4-9 nm。采用能量色散X射线分析、红外光谱、X射线荧光分析、元素映射和扫描电子显微镜对制备的光致铬纳米纤维的形貌、透光率、元素含量和力学性能进行了研究。据报道，REAN@PET 薄膜中的纳米纤维直径在 180-220 nm 范围内。REAN@PET 纳米纤维薄膜显示出 365 nm 的激发带和 519 nm 的发射带。随着 REAN 含量的增加，溶液吹制的 REAN@PET 纳米纤维薄膜显示出改进的超疏水性。当在紫外线照射下激发时，透明纳米纤维显示出快速且可逆的双模荧光光致变色，变为绿色而不会疲劳。据报道，目前的防伪薄膜是一种简单有效的方法来构建多功能材料，以低成本引入具有经济和社区利益的理想市场。