Li Feiyang, Wang Mengzhu, Liu Shujuan, Zhao Qiang
State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications (NUPT) 9 Wenyuan Road Nanjing 210023 Jiangsu China
College of Electronic and Optical Engineering, College of Flexible Electronics (Future Technology), Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and Devices, Nanjing University of Posts and Telecommunications (NUPT) 9 Wenyuan Road Nanjing 210023 Jiangsu China.
Chem Sci. 2021 Dec 20;13(8):2184-2201. doi: 10.1039/d1sc06586f. eCollection 2022 Feb 23.
Great progress has been made in the development of various organic persistent luminescent (OPL) materials in the past few years, and increasing attention has been paid to their interesting applications in environmental sensing due to their long emission lifetimes and high sensitivity. Especially, the introduction of different halogen elements facilitates highly efficient OPL emission with distinct lifetimes and colours. In this review, we summarize the current status of the halide-containing OPL materials for environmental sensing applications. To begin with, the photophysical processes and luminescence mechanisms of OPL materials are expounded in detail to better understand the relationship among molecular structures, OPL properties, and sensing applications. Then, representative halide-containing material systems, such as small molecules, polymers, and doping systems, are summarized with their interesting applications in sensing temperature, oxygen, HO, UV light and organic solvents. In addition, several challenges and future research opportunities in this field are discussed. This review aims to provide some reasonable guidance on the material design of OPL sensors and their practical applications, and tries to provide a new perspective on the application direction of organic optoelectronics.
在过去几年中，各种有机持久发光（OPL）材料的开发取得了巨大进展，由于其长发射寿命和高灵敏度，它们在环境传感中的有趣应用受到了越来越多的关注。特别是，不同卤素元素的引入促进了具有不同寿命和颜色的高效OPL发射。在这篇综述中，我们总结了用于环境传感应用的含卤OPL材料的现状。首先，详细阐述了OPL材料的光物理过程和发光机制，以便更好地理解分子结构、OPL特性和传感应用之间的关系。然后，总结了代表性的含卤材料体系，如小分子、聚合物和掺杂体系，以及它们在传感温度、氧气、HO、紫外光和有机溶剂方面的有趣应用。此外，还讨论了该领域的几个挑战和未来研究机会。这篇综述旨在为OPL传感器的材料设计及其实际应用提供一些合理的指导，并试图为有机光电子学的应用方向提供一个新的视角。
