Functionalization of cellulose fibers and paper with lanthanide-based luminescent core/shell nanoparticles providing 3-level protection for advanced anti-counterfeiting purposes

Materials & Design

Małgorzata Skwierczyńska¹  Aleksandra Erdman²  Emilia Śmiechowicz³  Marcin Runowski³  Dominika Przybylska³  Agata Szczeszak³  Konrad Olejnik³  Tomasz Grzyb⁴  Olena Ivashchenko⁵  Piotr Kulpiński⁶ 

[1] Corresponding author.;Departamento de Física, Universidad de La Laguna, Apartado de Correos 456, E-38200 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain;Adam Mickiewicz University in Poznań, Faculty of Chemistry, Department of Rare Earths, Uniwersytetu Poznańskiego 8, Poznan 61-614, Poland;Lodz University of Technology, Centre of Papermaking and Printing, Wólczańska 221, Lodz 90-924, Poland;Lodz University of Technology, Department of Mechanical Engineering, Informatics and Chemistry of Polymer Materials, Zeromskiego 116, Lodz 90-924, Poland;NanoBioMedical Centre, Adam Mickiewicz University in Poznan, Wszechnicy Piastowskiej 3, Poznan 61-614, Poland;

关键词: Luminescent paper &;    cellulose fibres;    Luminescence;    Lanthanide ions;    Functional materials;    Surface modification;    Anti-Stokes emission;   

DOI  :  

来源: DOAJ

【 摘 要 】

The increasingly wide-spreading falsification of documents, clothing, and packaging has a negative impact on every aspect of the global markets. Therefore, the development of high-quality strategies for materials protection has become a big challenge. Thus, this work presents novel anti-counterfeiting lyocell fibres, exhibiting bright green or yellowish up-conversion emission upon dual-range excitation, using either 975-nm or 1532-nm NIR laser radiation. The up-converting cellulose fibers were prepared by introducing lanthanide-doped core@shell nanoparticles β-NaYF4: Yb3+, Er3+@β-NaYF4 into the cellulose matrix. The spinning process of fibres was based on N-methylmorpholine N-oxide method, environmentally friendly because of the reusable reagents used. The prepared fibres were incorporated into the paper mass, forming a luminescent paper as a proof of concept for the multi-modal protection of documents. The luminescent fibres have considerable application potential as anti-counterfeiting composite materials with excellent performance, which are very difficult to imitate or copy, providing a very high level of security.

【 授权许可】

Unknown