Side-hanging type polymethyl methacrylate rare earth complex luminescent material and preparation method thereof

Abstract

The invention discloses a side-hanging type polymethyl methacrylate rare earth complex luminescent material and a preparation method thereof, belongs to the field of high polymer materials, and in particular relates to a side-hanging type polymethyl methacrylate rare earth complex luminescent material and a preparation method thereof. The side-hanging type polymethyl methacrylate rare earth complex luminescent material is obtained by taking polymethyl methacrylate random copolymer of side-hanging aromatic carboxylic acid as a high polymer ligand and organic small molecules as a co-ligand to perform coordination with rare earth ions in an organic solvent. According to the side-hanging type polymethyl methacrylate rare earth complex luminescent material disclosed by the invention, because the luminescent center of the material is side-hung on a high polymer main chain, and flexible high polymers wrap the luminescent center and are separated from the luminescent center, a concentration quenching effect is effectively eliminated, and the fluorescence intensity of the luminescent material can be enhanced along with the increase of the rare earth content; and moreover, a matrix polymer has good transparency, has good solubility in various organic solvents, can be prepared into solid powder, a transparent film or nano fibers, can emit fluorescent light of various colors under ultraviolet irradiation, and can be applied to the fields of anti-counterfeiting mark materials, display materials and the like.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and relates to a side-hanging polymethyl methacrylate rare earth complex luminescent material and a preparation method thereof. Background technique [0002] Rare earth elements are known as a treasure house of new materials because of their rich electronic energy levels and 4f electronic transition characteristics, which make them have optical, electrical, magnetic and catalytic properties. Rare earth fluorescent materials prepared with rare earth ions as the luminescent center have the advantages of high light conversion efficiency, narrow-band emission, and long life. application. However, rare earth inorganic materials and small molecule rare earth complexes have problems such as difficult processing and high price, which limit the wider application of rare earth luminescent materials. Polymer materials have the advantages of abundant sources, convenient synthesis, light weight, ...

AI Technical Summary

Problems solved by technology

In the luminescent material prepared by this method, the distribution of rare earth ions is uniform, and it is not easy to form clusters. When the content of rare earth ions is high, the phenomenon of concentration quenching still does not appear. Limited and high cost, thus limiting its large-scale application

The advantage of this method is that the synthesis method is simple, the choice of raw materials is wide, and various types of fluorescent materials can be prepared to meet different needs. The disadvantage is that the steric hindrance of polymer materials is relatively large, and it is difficult for rare earth ions to coordinate with ligand groups. Prepare high-molecular-based rare-earth fluorescent materials with high fluorescence intensity, and when the content of rare-earth ions is high, these materials are easy to form ion clusters and cause fluorescence quenching

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