College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, China.
Sci Rep. 2021 Mar 12;11(1):5841. doi: 10.1038/s41598-021-85468-z.
In this study, the ZnO quantum dots (QDs) water-based fluorescent anti-counterfeiting ink was prepared with the polyvinylpyrrolidone (PVP) content of 0.15-0.17 g/mL, the ZnO QDs concentration of 4% and water as the solvent, which has good fluorescence, printability and resistance. According to the halftone technology, fluorescence quenching of the ZnO QDs by acid, and acid resistance of the organic fluorescent ink, a high-quality anti-counterfeiting method of fluorescent discoloration was proposed. The QDs ink has broad application prospects in the field of anti-counterfeiting green packaging.
在这项研究中，制备了以 0.15-0.17g/mL 的聚乙烯吡咯烷酮（PVP）含量、4%的 ZnO 量子点浓度和水为溶剂的基于 ZnO 量子点（QDs）的水基荧光防伪油墨，该油墨具有良好的荧光性、印刷适性和耐抗性。根据半色调技术，利用酸对 ZnO QDs 的荧光猝灭作用以及有机荧光油墨的耐酸性能，提出了一种高质量的荧光变色防伪方法。该 QDs 油墨在防伪绿色包装领域具有广阔的应用前景。
