Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2023-03-22 , DOI: 10.1016/j.jcis.2023.03.125 Xiangyang Yuan 1 , Endian Cui 1 , Kai Liu 2 , Flavia Artizzu 3 , Xiaoling Liao 1 , Juntao Zhao 1 , Jianfeng Tang 1 , Wei Sun 4 , Jing Liu 1 , Yingshuai Liu 1
Lanthanide (Ln3+) luminescent materials play a crucial role in information security and data storage owing to their excellent and unique optical properties. The advances in dynamic colorful luminescent anti-counterfeiting nanomaterials enable the generation of a high-level information encryption. In this work, a superior thermal, optical wavelength and excitation power triple-mode stimuli-responsive emission color modulation is demonstrated in a lanthanide-doped nanostructured luminescent material. The plentiful emission colors are manipulated by modulating the composition of a fluoride core–shell nanostructure with different Ln3+ at different doping concentrations. The nanomaterials display remarkable excitation wavelength/power-dependent color change, along with temperature-dependent color variation in the range from 298 K to 437 K, with a good relative sensitivity Sr of 1.1387% K−1 at 398 K. The universal optical modulation, combined with the excellent optical and structural stability of the luminescent nanoparticles, renders many advantages for the anti-counterfeiting application. This work explores a universal strategy for the manipulation of triple-mode stimuli-responsive dynamic luminescence and demonstrates its good potential for anti-counterfeiting application.
中文翻译:
用于动态多色发光防伪的三模上转换发射
镧系(Ln 3+ )发光材料以其优异而独特的光学性能在信息安全和数据存储中发挥着至关重要的作用。动态彩色发光防伪纳米材料的进步使高级信息加密的产生成为可能。在这项工作中,在镧系元素掺杂的纳米结构发光材料中展示了卓越的热、光波长和激发功率三模式刺激响应发射颜色调制。通过调节具有不同 Ln 3+的氟化物核壳纳米结构的组成来控制丰富的发射颜色在不同的掺杂浓度下。纳米材料在 298 K 至 437 K 范围内显示出显着的激发波长/功率依赖性颜色变化,以及温度依赖性颜色变化,在 398 K 时具有1.1387% K −1的良好相对灵敏度 S r 。通用光学调制,结合发光纳米粒子优异的光学和结构稳定性,为防伪应用提供了许多优势。这项工作探索了一种操纵三模式刺激响应动态发光的通用策略,并展示了其在防伪应用方面的良好潜力。