Synthesis and performance of ZnO quantum dots water-based fluorescent ink for anti-counterfeiting applications

Xi Chen; Qi Wang; Xiao-Ju Wang; Jie Li; Guo-Bin Xu

doi:10.1038/s41598-021-85468-z

Synthesis and performance of ZnO quantum dots water-based fluorescent ink for anti-counterfeiting applications

Sci Rep. 2021 Mar 12;11(1):5841. doi: 10.1038/s41598-021-85468-z.

Authors

Xi Chen¹, Qi Wang², Xiao-Ju Wang¹, Jie Li¹, Guo-Bin Xu¹

Affiliations

¹ College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, China.
² College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, China. wangqi@njfu.edu.cn.

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't