Gu Long, Wu Hongwei, Ma Huili, Ye Wenpeng, Jia Wenyong, Wang He, Chen Hongzhong, Zhang Nan, Wang Dongdong, Qian Cheng, An Zhongfu, Huang Wei, Zhao Yanli
Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China.
Nat Commun. 2020 Feb 18;11(1):944. doi: 10.1038/s41467-020-14792-1.
Functional materials displaying tunable emission and long-lived luminescence have recently emerged as a powerful tool for applications in information encryption, organic electronics and bioelectronics. Herein, we present a design strategy to achieve color-tunable ultralong organic room temperature phosphorescence (UOP) in polymers through radical multicomponent cross-linked copolymerization. Our experiments reveal that by changing the excitation wavelength from 254 to 370 nm, these polymers display multicolor luminescence spanning from blue to yellow with a long-lived lifetime of 1.2 s and a maximum phosphorescence quantum yield of 37.5% under ambient conditions. Moreover, we explore the application of these polymers in multilevel information encryption based on the color-tunable UOP property. This strategy paves the way for the development of multicolor bio-labels and smart luminescent materials with long-lived emission at room temperature.
近年来，具有可调发射和长寿命发光特性的功能材料已成为信息加密、有机电子和生物电子等应用领域的有力工具。在此，我们提出一种设计策略，通过自由基多组分交联共聚实现聚合物中颜色可调的超长有机室温磷光（UOP）。我们的实验表明，通过将激发波长从254 nm改变到370 nm，这些聚合物在环境条件下呈现出从蓝色到黄色的多色发光，寿命长达1.2 s，最大磷光量子产率为37.5%。此外，我们基于颜色可调的UOP特性探索了这些聚合物在多级信息加密中的应用。该策略为开发多色生物标签和在室温下具有长寿命发射的智能发光材料铺平了道路。
