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

A technology of polyurethane and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., to achieve the effects of mild conditions, convenient and simple product processing, and easy control of conditions

Inactive Publication Date: 2013-01-16
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 h

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0039] The synthesis of a rare-earth polyurethane polymer composite luminescent material specifically includes the following steps:

[0040] (1) Chemical modification of carboxylic acid organic ligands containing hydroxyl groups

[0041] Weigh 0.2182g of sulfosalicylic acid (SSA), dissolve it in 20mL of tetrahydrofuran, put the solution into a three-necked flask, then weigh 0.0675g of thionyl chloride, drop it into the flask, and put it in a nitrogen atmosphere. After the reaction temperature is 65°C and the reaction time is 3 hours, 0.2214g of silane coupling agent APTES is added, and the reaction lasts for 6 hours. Finally, the solution after the reaction is separated and purified by a rotary evaporator to obtain a yellow oily liquid that is the compound containing hydroxyl The hydroxyl-containing carboxylic acid organic ligand precursor SSA-Si after the chemical modification of the carboxylic acid organic ligand sulfosalicylic acid;

[0042] (2) Preparation of binary rare ...

Embodiment 2

[0051] A rare earth polyurethane polymer composite luminescent material, specifically comprising the following preparation steps:

[0052] (1) Chemical modification of carboxylic acid organic ligands containing hydroxyl groups

[0053] Weigh 0.153g of 2-amino-5-hydroxybenzoic acid (AHBA), dissolve it in 15mL of DMF, put the solution into a three-necked flask, add 0.241g of silane coupling agent 3-chloropropyltriethoxysilane, in Under a nitrogen atmosphere, the reaction temperature was 153°C for 6 hours. Finally, the solution after the reaction was separated and purified by a rotary evaporator, and the obtained liquid was the carboxylic acid organic ligand 2-amino-5- Hydroxybenzoic acid chemically modified carboxylic acid organic ligand precursor AHBA-Si containing hydroxyl;

[0054] (2) Preparation of binary rare earth carboxylic acid hybrid materials

[0055] The hydroxyl-containing carboxylic acid organic ligand precursor AHBA-Si obtained in step (1) was dissolved in 15 mL...

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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...

Claims

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Application Information

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IPC IPC(8): C09K11/06C08G18/76C08G18/38C08G18/32
Inventor 李颖王霞王杰林钱微李晓青金钊
Owner UNIV OF SHANGHAI FOR SCI & TECH
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