A green-synthesized phosphorescent carbon dot composite for multilevel anti-counterfeiting
Open Access
- 15 June 2021
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Nanoscale Advances
- Vol. 3 (15), 4536-4540
- https://doi.org/10.1039/d1na00252j
Abstract
Room temperature phosphorescent (RTP) materials are rising and gaining considerable attention due to their special photo-capture–release ability. Herein, a kind of environmentally friendly RTP composite was devised by microwaving a mixture of carbon dots, boric acid, and urea, in the presence of covalent bonds and hydrogen bonds between each of the components. The resultant RTP material showed ultra-long phosphorescence lifetime up to 1005.6 ms with an outstanding afterglow as long as 9.0 s. Moreover, this afterglow feature with moisture sensitive behavior was explored to achieve multilevel anti-counterfeiting, with the function of complex decryption of encrypted secret information under multiple stimuli. Our results provide a green strategy for scalable synthesis of carbon-based RTP materials, and extend their application scope to high level information security.Keywords
Funding Information
- National Natural Science Foundation of China (61622402)
- National Key Research and Development Program of China (2017YFB1002900)
This publication has 54 references indexed in Scilit:
- Elucidating the Excited State of Mechanoluminescence in Organic Luminogens with Room‐Temperature PhosphorescenceAngewandte Chemie, 2017
- Cool white, persistent room-temperature phosphorescence in carbon dots embedded in a silica gel matrixPhysical Chemistry Chemical Physics, 2017
- Carbon dots in zeolites: A new class of thermally activated delayed fluorescence materials with ultralong lifetimesScience Advances, 2017
- One-step and green synthesis of nitrogen-doped carbon quantum dots for multifunctional electronicsRSC Advances, 2017
- Efficient Room-Temperature Phosphorescence from Nitrogen-Doped Carbon Dots in Composite MatricesChemistry of Materials, 2016
- Triple‐Mode Emission of Carbon Dots: Applications for Advanced Anti‐CounterfeitingAngewandte Chemie, 2016
- Large-scale synthesis of N-doped carbon quantum dots and their phosphorescence properties in a polyurethane matrixNanoscale, 2016
- Long lifetime pure organic phosphorescence based on water soluble carbon dotsChemical Communications, 2013
- Indicators for optical oxygen sensorsBioanalytical Reviews, 2012
- Photoionization behavior of Eu2+-doped BaMgSiO4 long-persisting phosphor upon UV irradiationActa Materialia, 2011