Research on High-Quality Anti-Counterfeiting Inkjet Printing Based on Three-Color Fluorescent Carbon Dots
10.19756/j.issn.0253-3820.251258
- VernacularTitle:基于三色荧光碳点的高质量防伪喷墨打印性能分析
- Author:
Chen-Yi HU
1
;
Meng WANG
;
Hao YAN
;
Wei-Lin LI
;
Chuan-Jun YUAN
;
Ming LI
Author Information
1. 中国刑事警察学院刑事科学技术学院,沈阳 110035
- Keywords:
Carbon dots;
Anti-counterfeiting;
Fluorescent ink;
Anti-counterfeiting ink;
Inkjet printing
- From:
Chinese Journal of Analytical Chemistry
2025;53(11):1889-1897,中插38-中插43
- CountryChina
- Language:Chinese
-
Abstract:
The anti-counterfeiting application of three-color fluorescent carbon dots(CDs)in high-quality inkjet printing was studied.Blue,green and red fluorescent CDs were synthesized by solvothermal method using three kinds of isomers of phenylenediamine as precursor,and ethanol-glycerol mixture as solvent.The morphology,composition,structure,and optical properties were characterized.Blue,green and red fluorescent inks were then prepared by diluting CDs with water.The dilution ratio,excitation light source and filtering method were also optimized.The optimal dilution ratio of blue,green and red fluorescent ink was 5,5 and 20,respectively.Under 365,415 and 450 nm light excitation,bright blue,green and red fluorescence from above inks could be observed by using a blue,green and red filter,respectively.These fluorescent inks were finally used for high-quality inkjet printing through monochrome printing mode and polychrome printing mode.In addition,the sensitivity and contrast of printing were quantitatively investigated.The series of three-color fluorescent inks possessed great prospects in ordinary and invisible fluorescent anti-counterfeiting application.
