Histamine metal halide long afterglow glass and preparation method thereof

Abstract

The invention discloses histamine metal halide long afterglow glass and a preparation method thereof. The novel organic-inorganic hybrid metal halide glass is synthesized by taking metal halide and histamine or histamine phosphate as raw materials and adopting a solvent-free method. Wherein a strong hydrogen-bond interaction is formed between histamine and metal halide, and non-radiative transition of a histamine chromophore can be effectively inhibited; in addition, the rigid environment provided by the glass can increase the phosphorescence lifetime and prolong the afterglow time. After an excitation light source is removed from the histamine metal halide glass prepared by the invention, the afterglow lasting time is as long as 10 seconds. These glass materials also exhibit lower melting temperatures, arbitrary processability, high transparency, and high hardness. The invention not only shows a simple method for preparing the glass at low cost, but also realizes the ultra-long afterglow emission of the transparent glass material, and shows wide application prospects in the fields of night indication, instrument display and the like.

Description

Technical Field

[0001] This invention belongs to the field of optical functional materials technology, and specifically relates to a histamine metal halide long afterglow glass and its preparation method. Background Technology

[0002] Long-afterglow luminescence refers to the phenomenon where light continues to be emitted for a period of time after the excitation source is removed. Long-afterglow luminescent materials possess advantages such as long luminescent lifetime, large Stokes shift, and rich excited-state properties, showing broad application prospects in fields such as nighttime indication, information storage, and bioimaging. However, existing long-afterglow crystalline luminescent materials suffer from limitations such as short afterglow time, poor processability, and long preparation cycles. Therefore, there is an urgent need to develop rapid and simple methods to prepare amorphous glass materials that combine long-afterglow emission with excellent processability. Summary of the Invention

[0003] The purpose of this invention is to provide a histamine metal halide long-afterglow glass and its preparation method. This method is easy to operate, requires no solvent, and produces a halide glass with ultra-long afterglow emission, high transparency, high hardness, and arbitrary processability. This invention provides a new approach and method for developing novel glass materials with excellent optical properties.

[0004] The preparation method of the histamine metal halide long afterglow glass is as follows: histamine or histamine phosphate is thoroughly mixed with metal halide, and then continuously heated to melt. Large-size glass is obtained by melt quenching, which is the histamine metal halide long afterglow glass material.

[0005] The metal halide is one of the halides of transition metals or group III, IV and V metals.

[0006] The molar ratio of histamine or histamine phosphate to the metal halide is 0.1-10.

[0007] The melting and quenching temperature is 350-450K, and the time is 10-100min.

[0008] This invention uses histamine or histamine phosphate and metal halides as precursors, utilizing the hydrogen bonds formed between them to lower the melting point of the mixture. A novel organic-inorganic hybrid metal halide glass material is synthesized through a solvent-free melt-quenching method. Thanks to the strong intermolecular interactions between the organic components and the metal halides, as well as the rigid environment of the glass, the histamine chromophores are stabilized, suppressing non-radiative transition processes. Therefore, the prepared glass material exhibits ultra-long afterglow emission, with a visible afterglow duration of up to 10 seconds. Simultaneously, the long-afterglow glass prepared by this invention possesses high transparency, high hardness, and excellent processing properties, enabling the design and construction of glasses with specific geometries. This invention not only demonstrates a rapid and simple method for preparing glass but also achieves visualized ultra-long afterglow emission of transparent glass materials. Attached Figure Description

[0009] Figure 1 Photographs of the glass prepared in Example 1 when excited at 365nm and 395nm, and a long afterglow photograph after removing the excitation source.

[0010] Figure 2 Photographs of the glass prepared in Example 2 under excitation by sunlight, 365nm, 395nm and blue light, and long afterglow photographs after removing the excitation source.

[0011] Figure 3 Thermogravimetric curves of the glasses prepared in Examples 1 and 2. Detailed Implementation Example 1

[0012] 111.1 mg of histamine and 136.3 mg of zinc chloride were thoroughly mixed and placed in an oven at 370 K for 20 min. After removal and cooling at room temperature, histamine metal halide long afterglow glass material was obtained.

[0013] The product was characterized as follows: Powder X-ray diffraction analysis of the glass material revealed the absence of discrete Bragg peaks in the spectrum, confirming its amorphous state. When excited by 365 nm or 395 nm ultraviolet light, the glass material exhibited blue fluorescence. Upon removal of the excitation source, the glass material displayed a long, green afterglow emission, with a visible afterglow duration of up to 10 seconds. Example 2

[0014] 209.1 mg of histamine phosphate and 136.3 mg of zinc chloride were thoroughly mixed and placed in an oven at 420 K for 30 min. After removal and cooling at room temperature, a high-transmittance histamine phosphate metal halide long afterglow glass material was obtained.

[0015] The product was characterized as follows: Powder X-ray diffraction analysis of the glass material revealed it to be amorphous. Under sunlight, the glass exhibits high transparency and high hardness. When excited by a 365nm ultraviolet lamp, the glass material exhibits blue fluorescence; after the excitation source is removed, it displays a long, visible blue afterglow emission lasting up to 5 seconds. When excited by a 395nm ultraviolet lamp, the glass material exhibits blue fluorescence; after the excitation source is removed, it displays a long, visible green afterglow emission lasting up to 6 seconds. When excited by blue visible light, the glass material does not emit light; after the excitation source is removed, it displays a long, visible green afterglow emission.

[0016] Thermogravimetric analysis showed that the weight loss temperature of the histamine metal halide glass was 635 K, and that of the transparent histamine phosphate metal halide glass was 595 K, exhibiting higher thermal decomposition temperatures and relatively better thermal stability compared to crystalline metal halide materials.

Claims

1. A method for preparing a histamine metal halide long afterglow glass, characterized in that, The specific operation of the preparation method is as follows: after thoroughly mixing histamine or histamine phosphate with metal halide, the mixture is continuously heated to melt, and large-size glass is obtained by melt quenching, which is histamine metal halide long afterglow glass material.

2. The preparation method according to claim 1, characterized in that, The metal halide is one of the halides of transition metals or group III, IV and V metals.

3. The preparation method according to claim 1, characterized in that, The molar ratio of histamine or histamine phosphate to the metal halide is 0.1-10.

4. The preparation method according to claim 1, characterized in that, The melting and quenching temperature is 350-450K, and the time is 10-100min.

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