Facile Preparation Strategy of Novel Carbon Dots with Aggregation‐Induced Emission and Room‐Temperature Phosphorescence Characteristics. Issue 5 (23rd December 2022)

• Record Type: Journal Article
• Authors: Ding, Liu; Jin, Xilang; Gao, Yuchong; Wu, Jinlong; Ai, Taotao; Zhou, Hongwei; Chen, Xinyu; Zhang, Xinyu; Chen, Weixing
• Is Part Of: Advanced optical materials. Volume 11:Issue 5(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-12-23
• Subjects: aggregation‐induced emission -- dual fluorescence emission -- information encryption -- room‐temperature phosphorescence; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202202349
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: As one of the most promising fluorescent nanomaterials, carbon dots (CDs) are extensively studied. Nevertheless, one‐pot synthesis methods for CDs with both dual emission aggregation‐induced emission (AIE) and room‐temperature phosphorescence (RTP) could lead to significant breakthrough in extensive application fields. Herein, a new class of CDs (E‐CCDs) with reversible luminescence (blue dissolved fluorescence and red AIE) and RTP behavior is obtained with an eco‐friendly, low‐cost one‐pot solvothermal method. E‐CCDs exhibit dual fluorescence emission at 460 (Em‐1) and 600 nm (Em‐2), which is related to different emission centers. The addition of cyanic acid enhances the RTP behavior with a lifetime of 1.17 s, which lasts for ≈9 s to the naked eye. Based on the unique fluorescence and phosphorescence characteristics of CDs, E‐CCDs can be potentially used for fingerprint detection and information encryption. Abstract : A new class of carbon dots (E‐CCDs) is obtained with one‐pot solvothermal method. E‐CCDs exhibit dual fluorescence emission at 460 and 600 nm, which is related to different emission centers. The addition of cyanic acid enhances the room‐temperature phosphorescence behavior with a lifetime of 1.17 s. These unique carbon dots can be potentially used for fingerprint detection and multi‐information encryption.