Amino acid-rare earth complex high-efficiency phosphor and preparation method thereof

Abstract

The invention discloses an amino acid-rare earth compounded high-efficiency phosphor. The amino acid-rare earth compounded high-efficiency phosphor is synthesized by compounding a deprotonated amino acid with a rare earth element at normal temperature under normal pressure through a one-step technology, wherein the crystal phase of the phosphor formed through compounding the amino acid with the rare earth element is a hexagonal system nano-crystal powder, the geometry of the phosphor is sheet nano-particles, the particle size of the particles is 15-30 nm, and a molar ratio of the amino acid to rare earth element ions is 8:1 to 1:4. The invention also discloses applications of the above fluorescent material in the of the levorotation and dextrorotation chiral content detection of the amino acid and in printers as fluorescent ink. Experiments confirm that the light quantum yield of the phosphor reaches 26.67% or above, and the phosphor has good fluorescence strength and good performances, is an ideal safe fluorescent material with high luminescence property, and also has the advantages of simple preparation method, realization of large-scale preparation, and wide application prospect.

Description

technical field [0001] The invention relates to a fluorescent powder and a preparation method thereof, in particular to an amino acid-rare earth complex high-efficiency fluorescent powder, a preparation method and application thereof, and belongs to the technical field of nanomaterials. Background technique [0002] Fluorescent materials have a wide range of applications in the fields of biology, lighting, display and detection. With the development of society, people's demand for fluorescent materials is increasing and higher. Rare earth fluorescent materials are a main class of fluorescent materials, which have strong light absorption ability and high conversion efficiency; they have broad emission spectrum and wide emission wavelength distribution. [0003] Traditional organic fluorescent materials often have certain toxicity, and their synthesis process is cumbersome and expensive, which limits their wide-scale application. In inorganic fluorescent materials, tradition...

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Problems solved by technology

However, because its ligands mostly contain benzene ring structures, they generally have high toxicity to the human body.

Moreover, the methods and steps of synthesizing MOF are relatively cumbersome, the conditions are harsh, and it is difficult to large-scale industrialization and mass production, which greatly limits the application of Ln-MOF in various aspects.

Through the search, there is no report on the patent of amino acid-rare earth complex phosphor and its preparation method

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