Transparent nano florescent material composition and application thereof in invisible anti-counterfeiting products

Abstract

The invention relates to a transparent nano florescent material composition and application thereof in invisible anti-counterfeiting products. The invention provides the transparent nano florescent material composition of which the transparency to wavelengths between 390 and 650 nanometers is over 50 percent. The transparent nano florescent material composition comprises the following nano florescent materials: inorganic nano oxide fluorescent powder which contains rare earth elements, an organic dye which contains unsaturated bonds, organic light-emitting small molecules, semiconductor fluorescence quantum dots, and organic metal complex molecules which contain the rare earth elements, wherein the average particle diameter of the nano fluorescent materials is not more than 400 nanometers.

Description

technical field [0001] The invention relates to various applications of novel fluorescent materials in product anti-counterfeiting. Specifically, it relates to a novel transparent nano-fluorescent material composition and its application in invisible anti-counterfeiting products. The transparent nano fluorescent material composition can be transparently covered on the surface of commodities for anti-counterfeiting or beautifying purposes. Background technique [0002] Brand counterfeiting is a major problem today, costing billions of dollars in lost sales each year. Brand names and logos are often printed on product surfaces and packaging materials, such as Coca-Cola, Nike, Apple, etc., showing a specific shape or color under certain ambient light. The traditional inks used are commercially available, so brand names and logos can be easily counterfeited. [0003] One means of deterring such counterfeiting is the introduction of functional materials into existing printing ...

AI Technical Summary

Problems solved by technology

Due to the multi-color and changeable brand patterns, in order to maintain the visual aesthetics of the brand or logo, traditional phosphors cannot be accepted by brand owners in most cases

In addition, visible anti-counterfeiting signs with background colors are also easy to be counterfeited

[0004] Moreover, the existing fluorescent materials also have the following technical problems in the preparation: (1) organic light-emitting materials are easy to age, have low luminous efficiency, and their lifespan is reduced under sunlight exposure; (2) inorganic nano-luminescent materials are difficult to prepare, and it is difficult The diameter is controlled at the nanometer level, which leads to Rayleigh scattering of the material and cannot guarantee complete transparency, or even if the material is prepared to the nanometer level, it also brings problems such as high synthesis cost, low brightness, and too short excitation wavelength. narrow; and (3) the luminescent substances interfere with each other and cannot produce transition colors

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