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Method for preparing multicolor luminescence rare earth-polyvinylpyrrolidone macromolecule composite material

A technology of polyvinylpyrrolidone and composite materials, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., which can solve the problems of uneven distribution of rare earth complexes, phase separation between two phases, and easy agglomeration, so as to facilitate the production of large-sized display panels , light weight, uniform particle size distribution

Inactive Publication Date: 2008-09-10
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the hybrid material prepared by the above method is connected by weak interaction force between the rare earth complex and the inorganic matrix, so there are problems such as uneven distribution of the rare earth complex and easy agglomeration, and phase separation between the two phases.

Method used

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  • Method for preparing multicolor luminescence rare earth-polyvinylpyrrolidone macromolecule composite material
  • Method for preparing multicolor luminescence rare earth-polyvinylpyrrolidone macromolecule composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 2.79g of 2-hydroxynicotinic acid was dissolved in 20ml of anhydrous acetone, added to a three-necked flask and heated to reflux. A solution of 4.95 g of propyl triethoxysilyl isocyanate dissolved in 20 ml of anhydrous acetone was then added dropwise. After the dropwise addition, the temperature of the whole solution was controlled at 60° C., refluxed for 12 h under the protection of nitrogen, then cooled, and the solvent was distilled off under reduced pressure. The resultant was washed three times with 20 ml of cyclohexane to obtain a pale yellow oily liquid. The obtained oily organic bridge molecule system was dissolved in absolute ethanol and set aside. Dissolve 3.45g of polyvinylpyrrolidone in 10ml of N,N-dimethylformamide solution, then add dropwise the ethanol solution dissolving the organic bridge molecule, and add the ethanol solution of terbium nitrate or europium nitrate. The mixture was stirred for 3 hours at a temperature of 20° C., and then tetraethyl ort...

Embodiment 2

[0032]2.44g of m-hydroxybenzoic acid was dissolved in 20ml of anhydrous ether, added to a three-necked flask and heated to reflux. Then, a solution of 4.95 g of triethoxysilylisocyanate dissolved in 20 ml of anhydrous diethyl ether was added dropwise. After the dropwise addition, the temperature of the whole solution was controlled at 65° C., refluxed for 13 h under the protection of nitrogen, then cooled, and the solvent was distilled off under reduced pressure. The resultant was washed three times with 20 ml of cyclohexane to obtain a pale yellow oily liquid. The obtained oily organic bridge molecules were dissolved in absolute ethanol and set aside. Dissolve 3.45g of polyvinylpyrrolidone in 10ml of N,N-dimethylformamide solution, then add dropwise the ethanol solution dissolving the organic bridge molecule, and add the ethanol solution of terbium nitrate or europium nitrate. The mixture was stirred for 4 hours at a temperature of 25° C., and then tetraethyl orthosilicate ...

Embodiment 3

[0034] 2.68g of 2-acetylphenol was dissolved in 20ml of tetrahydrofuran, added to a three-necked flask and heated to flow. A solution of 4.95 g of propyl triethoxysilyl isocyanate dissolved in 20 ml of tetrahydrofuran was then added dropwise. After the dropwise addition, the temperature of the whole solution was controlled at 70° C., refluxed for 14 h under the protection of nitrogen, then cooled, and the solvent was distilled off under reduced pressure. The resultant was washed three times with 20 ml of cyclohexane to obtain a pale yellow oily liquid. The obtained oily organic bridge molecule system was dissolved in absolute ethanol and set aside. Dissolve 3.45g of polyvinylpyrrolidone in 10ml of N,N-dimethylformamide solution, then add dropwise the ethanol solution dissolving the organic bridge molecule, and add the ethanol solution of terbium nitrate or europium nitrate. The mixture was stirred for 5 hours at a temperature of 30° C., and then tetraethyl orthosilicate and ...

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Abstract

The invention belongs to the luminescent macromolecular composite material technical field, in particular relating to a preparation method of a multicolor luminescent rare earth-polyethylene pyrrolidone macromolecular composite material. The preparation method comprises the following steps: firstly, aromatic series organic micromolecule is grafted in an inorganic silicone framework through adopting an organic synthesis method so as to obtain organic bridge molecule; secondly, the organic bridge molecule, polyethylene pyrrolidone and rare earth ion are made into rare earth complex through coordination bonds; finally, through adopting a sol-gel method, the obtained complex is made into dried gel by means of hydrolysis polycondensation reaction; therefore, organic macromolecular polymer with a long carbon chain is embedded in a silica network substrate through covalent bonds so as to obtain the macromolecular composite material with stable chemical property and thermodynamic property, regular surface topography and characteristic fluorescence emission through a drying and ageing process. The preparation method has moderate experiment conditions and can directly obtain the composite material at room temperature without adopting high-temperature calcination; moreover, the method has strong operability and high reproducibility. In addition, the obtained product, which has stable quality and regular topography, can control crystal grain dimensions within the scope of micron and nanometer.

Description

technical field [0001] The invention belongs to the technical field of luminescent polymer composite materials, and in particular relates to a preparation method of a multicolor luminescent rare earth-polyvinylpyrrolidone polymer composite material. Background technique [0002] The rapid development of today's society has made it extremely urgent to discover the functional compounding, performance complementation and optimization of various materials, and to prepare hybrid materials with excellent performance. Therefore, as soon as the organic-inorganic hybrid system appeared, it immediately attracted great attention from scientists. All countries in the world have invested a lot of manpower, material resources and financial resources to conduct in-depth and meticulous research on this material. Generally speaking, hybrid materials have the following characteristics: inorganic substances and polymers can be combined at the molecular level or nanometer size, and have transp...

Claims

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Application Information

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IPC IPC(8): C08L39/06C08K3/28C09K11/77
Inventor 闫冰乔晓菲
Owner TONGJI UNIV