Chemically stable fluorescent anti-counterfeiting labels achieved by UV-induced photolysis of nanocellulose
Hongrui Cheng, Xiaofeng Wei, Haijiang Qiu, Wensong Wang, Wenyue Su, Yuanhui Zheng
Abstract
fluorescent patterning strategy is developed to achieve covert, chemically stable and solvent-tolerant cellulose-based security labels by UV exposure. The unsaturated double bonds as the origin of the fluorescence were generated during the photodegradation process under UV exposure. The fluorescent emission of cellulose-based materials reveals excellent stability under acidic, alkaline, reducing, oxidizing and non-polar solvent environments. These advantages give the cellulose nanofiber based security label fantastic potential applications.
Topics & Concepts
NanocelluloseFluorescenceCellulosePhotodissociationSolventPhotochemistryChemistryCovertChemical engineeringSolvent polarityNanotechnologyMaterials scienceOrganic chemistryOpticsPhysicsEngineeringLinguisticsPhilosophyAdvanced Cellulose Research StudiesMicroplastics and Plastic PollutionPhysical Unclonable Functions (PUFs) and Hardware Security