Ultraviolet photochromic nano system as well as preparation method and application thereof

Abstract

The invention discloses an ultraviolet photochromic nano system and a preparation method and application thereof. The preparation method comprises the steps that molybdenum oxide is added into a mixed solvent of N-methyl pyrrolidone and water, and a mixed solution is obtained under the condition of heating; and the mixed solution is subjected to centrifugal washing to obtain the ultraviolet photochromic nano system, wherein the ultraviolet photochromic nano system comprises MoOx quantum dots and the mixed solvent. Molybdenum oxide is added into a mixed solvent of N-methyl pyrrolidone and water, and the ultraviolet photochromic nano system is prepared through a hydrothermal method. The preparation method is simple, low in cost, rapid and capable of achieving large-scale production, and tedious organic synthesis and purification steps are omitted. The prepared ultraviolet photochromic nano system is high in sensitivity to ultraviolet light, short in response time and stable in cycle performance, plasma absorption is enhanced after color change, plasma regulation and near-infrared light absorption can be performed, and the ultraviolet photochromic nano system has important significance in the fields of plasma regulation and energy consumption reduction.

Description

technical field [0001] The invention relates to the technical field of information encryption and anti-counterfeiting, in particular to an ultraviolet photochromic nano system and its preparation method and application. Background technique [0002] Under the action of an external excitation source, the phenomenon that the color of the system changes significantly is called discoloration. In recent years, smart responsive optoelectronic materials whose optoelectronic properties change significantly under the action of external stimuli have attracted a large number of researchers. Researchers at home and abroad have successively developed a series of photochromic optical functional materials, which have been successfully applied in various optical and optoelectronic fields such as information display, security and anti-counterfeiting, information sensing, and biological imaging. The unique responsive properties of these materials open up new avenues for the development of no...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an ultraviolet photochromic nano system and its preparation method and application in view of the above-mentioned defects of the prior art, aiming at solving the complex organic chemical synthesis and cumbersome synthesis of existing photochromic materials. The purification process of the photochromic behavior is low in efficiency and difficult to truly large-scale industrial application

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