Achieving Thermo-Mechano-Opto-Responsive Bitemporal Colorful Luminescence via Multiplexing of Dual Lanthanides in Piezoelectric Particles and its Multidimensional Anticounterfeiting
Achieving Thermo-Mechano-Opto-Responsive Bitemporal Colorful Luminescence via Multiplexing of Dual Lanthanides in Piezoelectric Particles and its Multidimensional Anticounterfeiting
复制标题
压电粒子中双镧系元素复用实现热-力-光响应双时态彩色发光及其多维防伪
DOI：
10.1002/adma.201804644
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发表时间：
2018
影响因子：
29.4
通讯作者：
Qiu Jianrong
中科院分区：
文献类型：
--
作者：
Zhang Jun-Cheng;Pan Cong;Zhu Yi-Fei;Zhao Li-Zhen;He Hong-Wei;Liu Xiaofeng;Qiu Jianrong
发光材料的光学特性，包括发光颜色（波长）、寿命和激发方式，在数据通信和信息安全中起着至关重要的作用。传统的发光材料通常显示单色、单时、单峰（偶尔双峰）发射，导致低电平读出和解码。长期以来，在单一材料中实现多色、多时间和多模态发光一直被认为是一个重大挑战。在这项研究中，首次证明了通过双镧系掺杂剂的光复用，在特定压电粒子中实现了彩色（红-橙-黄-绿）、双时间（荧光和延迟）和四模态（热/机械激发和上转换/下移）发射的优越集成。所制备的多功能NaNbO3:Pr3+，Er3+发光微粒子特别适合嵌入聚合物薄膜中，以实现防水，灵活/可穿戴和高度可拉伸的特性，并同步提供多维代码，可以使用简单和常用的工具（包括智能手机的LED，笔书写，冷热刺激和紫外线/近红外灯）进行视觉读取。这些发现为设计高度集成的刺激响应发光材料和智能设备提供了独特的见解，可用于各种应用，特别是先进的防伪技术。
Optical characteristics of luminescent materials, including emission color (wavelength), lifetime, and excitation mode, play crucial roles in data communication and information security. Conventional luminescent materials generally display unicolor, unitemporal, and unimodal (occasionally bimodal) emission, resulting in low‐level readout and decoding. The development of multicolor, multitemporal, and multimodal luminescence in a single material has long been considered to be a significant challenge. In this study, for the first time, the superior integration of colorful (red–orange–yellow–green), bitemporal (fluorescent and delayed), and four‐modal (thermo‐/mechano‐motivated and upconverted/downshifted) emissions in a particular piezoelectric particle via optical multiplexing of dual‐lanthanide dopants is demonstrated. The as‐prepared versatile NaNbO3:Pr3+,Er3+luminescent microparticles shown are particularly suitable for embedding into polymer films to achieve waterproof, flexible/wearable and highly stretchable features, and synchronously to provide multidimensional codes that can be visually read‐out using simple and commonly available tools (including the LED of a smartphone, pen writing, cooling–heating stimuli, and ultraviolet/near‐infrared lamps). These findings offer unique insight for designing highly integrated stimuli‐responsive luminophors and smart devices toward a wide variety of applications, particularly advanced anticounterfeiting technology.