Triple‐Mode Emission of Carbon Dots: Applications for Advanced Anti‐Counterfeiting. (2nd May 2016)

• Record Type: Journal Article
• Authors: Jiang, Kai; Zhang, Ling; Lu, Junfeng; Xu, Chunxiang; Cai, Congzhong; Lin, Hengwei
• Is Part Of: Angewandte Chemie. Volume 128:Number 25(2016)
• Page Start: 7347
• Page End: 7351
• Publication Date: 2016-05-02
• Subjects: Dreifach simultane Emission -- Fälschungssicherheit -- Kohlenstoffpunkte -- Photolumineszenz -- Raumtemperaturphosphoreszenz; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201602445
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Photoluminescence (PL), up‐conversion PL (UCPL), and phosphorescence are three kinds of phenomena common to light‐emitting materials, but it is very difficult to observe all of them simultaneously when they are derived from a single material at room temperature. For the first time, triple‐mode emission (that is, PL, UCPL, and room temperature phosphorescence (RTP)) is reported, which relies on a composite of the luminescent carbon dots (CDs) prepared from m ‐phenylenediamine and poly(vinyl alcohol) (PVA). Moreover, the CDs‐PVA aqueous dispersion is nearly colorless and demonstrates promise as a triple‐mode emission ink in the field of advanced anti‐counterfeiting.