Luminescent cotton fibers coated with fluorescein dye for anti-counterfeiting applications

Baatout, Khouloud; Saad, Fredj; Baffoun, Ayda; Mahltig, Boris; Kréher, David; Jaballah, Nejmeddine; Majdoub, Mustapha

doi:10.1016/j.matchemphys.2019.06.007

Cited by 39 publications

(28 citation statements)

References 36 publications

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“…Fluorescent cellulosic material is also an important development direction to increase the added values of cellulose. This material with unique photoluminescence properties has been widely applied in anti‐counterfeit, [ 23–25 ] smart detection, [ 26,27 ] warning signs, [ 28 ] UV screening, [ 29 ] etc. Hantzsch reaction could form fluorescent 1,4‐dihydropyridine (DHP) ring in the presence of β‐diketone, aldehyde and amine.…”

Section: Figurementioning

confidence: 99%

Robust Fabrication of Fluorescent Cellulosic Materials via Hantzsch Reaction

Wang

Sun

Wang

et al. 2020

Macromol. Rapid Commun.

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Hantzsch reaction is one of the typical multicomponent reactions (MCRs), and it is employed herein to endow cellulosic materials with fluorescent properties. For example, acetoacetyl (ACAC)‐bearing cotton fabric prepared via transesterification with tert‐butyl acetoacetate is subjected to an aqueous Hantzsch reaction with formaldehyde and ammonium acetate at ambient temperature. A strong fluorescent emission around 460 nm is achieved within 10 min. XPS, fluorescent spectroscopy, and elemental analysis are used to confirm the presence of 1,4‐dihydropyridine (DHP) rings on the surface of the fabric. TGA, SEM, XRD, and mechanical testing results show that the modification process has minimum impact on intrinsic properties of the fabric. The strategy is also shown to be generally applicable to various forms of cellulosic materials and different aldehydes. This fast and simple approach enriches the application of MCR in modification of cellulose and cellulose derivatives.

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Section: Figurementioning

confidence: 99%

Robust Fabrication of Fluorescent Cellulosic Materials via Hantzsch Reaction

Wang

Sun

Wang

et al. 2020

Macromol. Rapid Commun.

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“…Textiles are prone to be counterfeited due to their massive manufacture scale. erefore, various security technologies have been widely used in textiles to protect consumers and producers from the fake and shoddy products [2,3]. Numerous methods, including quick response (QR) codes, radio frequency identification (RFID), spectroscopy analysis, and photoluminescence materials, were emerged to identify fiber and textiles [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A Feasible and Facile Method for the Anticounterfeiting of Down Fiber

Jin

Gao

Yang

2021

Advances in Materials Science and Engineering

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In order to prevent counterfeiting of down fiber from consumers, rare earth fluorescent materials are developed in the field of material identification and anticounterfeiting. Herein, the development of verifiable down fiber based on infrared excitation-infrared emission was described. A novel method was approached to prepare security down fiber, which involved modification of down-conversion nanoparticles (DCNPs) by sulfonic groups and self-assembly onto down fiber through electrostatic force. DCNPs were successfully prepared from ytterbium-deposited NaYF4 nanoparticles using a complexation precipitation approach, in which the trivalent ytterbium ions served as the luminescent center. Sulfonic down-conversion nanoparticles (SO3-SiO2@DCNPs) were fabricated by the hydrolysis of 3-mercaptopropyl triethoxysilane (MPTES) and next oxidation to enhance the combination of the DCNPs with down fiber. The synthesis of DCNPs and SO3-SiO2@DCNPs and its pendant to down were confirmed by XRD, SEM, XPS, FT-IR, Zeta potential meter, and PL, which revealed the presence of DCNPs in the size average 86 nm. The obtained DCNPs and security down fiber were launching an invisible red-shifted emission of 930∼1080 nm (corresponding to the 2F5/2 ⟶ 2F7/2 transitions in Yb3+). After washing, the infrared emission of security down fiber was evaluated and proved to be effective with fine results, which showed its potential application in the field of security.

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“…[15][16][17] Indeed, the deposition of fluorescein into cotton yarns using the impregnation method was reported for anticounterfeiting applications. 18 Khan et al 19 provided a new strategy for the applications of dye molecules on textiles by coating fluorescein isothicyanate-labeled poly(allylamine hydrochloride) and poly(acrylic acid) on cotton fabric by a method involving the layer-by-layer (LbL) assembly of films. Luo et al 20 reported the use of the dip-dyeing process to immobilize the fluorescent material onto cotton fibers to detect and separate the Cd 2+ in water.…”

Section: Introductionmentioning

confidence: 99%