Carbon dots confined in 3D polymer network: Producing robust room temperature phosphorescence with tunable lifetimes  

作　　者：Yingxiang Zhai Ping Wang Xinyue Zhang Shouxin Liu Jian Li Zhijun Chen Shujun Li 

机构地区：[1]Key Laboratory of Bio-based Material Science&Technology,Ministry of Education,Northeast Forestry University,Harbin 150040,China

出　　处：《Chinese Chemical Letters》2022年第2期783-787,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.31890774);Excellent Young Scholar Sponsorship Program by National Forestry and Grassland Administration of China Funding (No.2019132611);Heilong Jiang Postdoctoral Science Foundation (No.LBH-Z18005);Young Elite Scientists Sponsorship Program by CAST (No.2018QNRC001)。

摘　　要：Room temperature phosphorescence(RTP) is important in both organic electronics and encryption. Despite rapid advances, a universal approach to robust and tunable RTP materials based on amorphous polymers remains a formidable challenge. Here, we present a strategy that uses three-dimensional(3 D)confinement of carbon dots in a polymer network to achieve ultra-long lifetime phosphorescence. The RTP of the as-obtained materials was not quenched in different polar organic solvents and the lifetime of the RTP was easily tuned by adjusting the amount of crosslinking or varying the drying temperature of the 3 D molecular network. As a demonstration of potential application, as-obtained RTP materials were successfully used to prepare RTP fibres for flexible textiles. As well as bringing to light a fundamental principle for the construction of polymer materials with RTP, we have endowed traditional carbon dots and polymers with fresh features that will expand potential applications.

关 键 词：Carbon dots 3D polymer network Room temperature phosphorescence Tunable lifetime GENERALITY 

分 类 号：TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]