| Title | A facile fabrication of conjugated fluorescent nanoparticles and micro-scale patterned encryption via high resolution inkjet printing |
| Authors | Wang, Min Jiang, Kunkun Gao, Yifan Liu, Yaming Zhang, Zhenchao Zhao, Weiwei Ji, Hongjun Zheng, Tingting Feng, Huanhuan |
| Affiliation | Harbin Inst Technol Shenzhen, Sch Mat Sci & Engn, Flexible Printed Elect Technol Ctr, Sauvage Lab Smart Mat, Shenzhen 518055, Peoples R China Peking Univ Shenzhen Hosp, Shenzhen 518036, Peoples R China Shenzhen PKU HKUST Med Ctr, Biomed Res Inst, Shenzhen 518036, Peoples R China |
| Keywords | UP-CONVERSION NANOPARTICLES QUANTUM DOTS MINIEMULSION POLYMERIZATION POLYSTYRENE MICROSPHERES ENHANCED FLUORESCENCE PROBE AGGREGATION |
| Issue Date | Jul-2021 |
| Publisher | NANOSCALE |
| Abstract | Conjugated fluorescent materials are getting more and more attention in the biomedical arena due to their high fluorescence intensity, non-bleaching and good biocompatibility. However, conjugated fluorescent materials are still not widely used in the field of anti-counterfeiting and pattern encryption due to their extremely low solubility and enormous difficulties in processing. Here, we use a facile approach to fabricate conjugated polymer fluorescent nanoparticles through a classic micro-emulsion method to address these issues. The particle size, loading materials and fluorescence intensity can be tuned as demanded. Later, these particles are transformed into invisible inks for inkjet printers to achieve micro-scale pattern encryption. These patterns show an ultra-high accuracy of around 30 micrometres. They can be used as QR codes for information encryption with 3 times more information encryption and great anti-counterfeiting ability. Finally, we establish an identification recognition system to check their validity. The scenario is the patient identification system of a hospital. The results show that these tags can be read in less than 3 seconds and they can last for 12 months at least. This facile approach holds great potential and bright prospects in the field of privacy protection, information encryption and anti-counterfeiting. |
| URI | http://hdl.handle.net/20.500.11897/623697 |
| ISSN | 2040-3364 |
| DOI | 10.1039/d1nr03062k |
| Indexed | SCI(E) |
| Appears in Collections: | 深圳医院 |
