Rare-earth polyurethane high-polymer composite luminescent material and preparation method thereof

Abstract

The invention discloses a synthesis method of a rare-earth polyurethane high-polymer composite luminescent material, which comprises the following steps: after modifying a hydroxy-containing carboxylic acid organic ligand by a chemical method, and introducing rare-earth ions by a sol-gel method to obtain a binary rare-earth carboxylic acid hybrid material; and by using free hydroxy group in the hybrid material as active group and dibutyltin dilaurate (T12) as a catalyst, reacting with an organic substance diphenylmethane diisocyanate or toluene-2,4-diisocyanate with active group (isocyanate) to implement combination by a covalent bond, thereby obtaining the bonded rare-earth polyurethane high-polymer composite luminescent material which has the advantages of long fluorescence lifetime, high luminescent quantum efficiency and high heat stability. The preparation method of the rare-earth polyurethane high-polymer composite luminescent material has the characteristics of simple technique, mild reaction conditions, no need of any additive, low production cost and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of rare earth polymer composite materials, and in particular relates to a rare earth polyurethane polymer composite luminescent material and a preparation method thereof. Background technique [0002] Rare earth organic complexes are a very important class of photoactive substances, especially as high-efficiency luminescent materials, which were recognized earlier. Through the strong ultraviolet absorption of the organic ligand and the effective energy transfer from the ligand to the rare earth ion, the rare earth complex emits the characteristic fluorescence of the rare earth ion, and the monochromaticity of the luminescence is good, the emission line is narrow, and the fluorescence lifetime is long. Therefore, many rare earth ions and their complexes have been successfully prepared into functional molecular devices, showing good application prospects in the fields of chemistry, biology, medi...

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Problems solved by technology

[0004] Although researchers are constantly exploring new preparation technologies, so far, there is no research on introducing polyurethane into binary rare earth organic-inorganic hybrid light-emitting materials in a chemical bonding manner to prepare ternary rare earth organic-inorganic polymer hybrids. Synthesis Technology Report of Chemiluminescent Materials

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