3 years ago

Facile Synthesis of Highly Water-Soluble Lanthanide-Doped t-LaVO4 NPs for Antifake Ink and Latent Fingermark Detection

Facile Synthesis of Highly Water-Soluble Lanthanide-Doped t-LaVO4 NPs for Antifake Ink and Latent Fingermark Detection
Yu Han, Chen Liang, Chunguang Li, Ying Yu, He Huang, Shouhua Feng, Dan Liu, Zhan Shi, Cailing Chen, Yue Lou
In the information age, it is important to protect the security and integrity of the information. As a result, the fluorescent ink as an antifake technology and the fingermark as an information carrier have aroused great interest. In this work, highly water-soluble lanthanide (Ln3+)-doped tetragonal phase (t-) LaVO4 nanoparticles (NPs) are successfully obtained via a simple, fast, and green microwave-assisted hydrothermal method. The average size of t-LaVO4 NPs is about 43 nm. The aqueous solutions of Ln3+-doped t-LaVO4 exhibit excellent fluorescence properties under ultraviolet light (UV) excitation (t-LaVO4:10%Eu is bright red and t-LaVO4:0.5%Dy is close to white). Some superb antifake fluorescent patterns are printed using Ln3+-doped t-LaVO4 aqueous solution as ink, which indicates the as-prepared Ln3+-doped t-LaVO4 NPs as fluorescent ink can meet the various antifake requirements. Notably, the designed convenient antifake fluorescent codes with improved security could be directly scanned and decoded by a smart phone. What's more, the as-prepared NPs can be used for the development of latent fingermark on various substrates and the second-level detail information can be clearly obtained from the magnification of a fingermark. These results indicate that the as-prepared Ln3+-doped t-LaVO4 fluorescent NPs have great potential in security application. Highly water-soluble lanthanide-doped tetragonal phase (t-) LaVO4 nanoparticles (NPs) are prepared via a facile environmental-friendly microwave-assisted hydrothermal method. The average size of t-LaVO4 NPs is about 43 nm. The Ln3+-doped t-LaVO4 NPs exhibit excellent fluorescence properties under ultraviolet light (UV) excitation, which can be used in the field of antifake ink and fingermark detection.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/smll.201702305

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.