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Luminescent material of naphthoic acid functionalized polymer and rare earth complex and preparation method of luminescent material

A technology of rare earth complexes and luminescent materials, applied in luminescent materials, chemical instruments and methods, etc., can solve the problem of low fluorescence emission intensity, and achieve the effects of enhancing luminescence properties, excellent mechanical properties, and strengthening energy transfer.

Inactive Publication Date: 2012-11-14
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the reported bonded polymer-rare earth complex luminescent material systems, the ligands on the polymer side chains are mostly aliphatic carboxyl groups, and the carboxyl groups only play a role in complexing rare earth ions, so it is necessary to add small molecule ligands to coordinate coordination. position, in order to form a polymer-rare earth luminescent material, and its fluorescence emission intensity is low

Method used

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  • Luminescent material of naphthoic acid functionalized polymer and rare earth complex and preparation method of luminescent material
  • Luminescent material of naphthoic acid functionalized polymer and rare earth complex and preparation method of luminescent material
  • Luminescent material of naphthoic acid functionalized polymer and rare earth complex and preparation method of luminescent material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1: In a four-necked flask, add 0.5g chloromethylated polysulfone (CMPSF) and 50mL dimethyl sulfoxide to fully dissolve CMPSF, then add 0.16g of 6-hydroxy-2-naphthoic acid and 0.10 g of anhydrous sodium carbonate, react at a constant temperature of 50°C for 8 hours, acidify the system with dilute hydrochloric acid, then precipitate the polymer with ethanol, wash with water, and dry to obtain the modified polysulfone NAPSF with naphthoic acid (NA) ligands bonded to the side chain. The bonding amount of naphthoic acid was 1.62 mmol / g.

[0026] In a four-neck flask, add 0.2g NAPSF and dissolve in 50mL dimethylformamide, adjust the pH to 6~7 with NaOH solution, then add 0.04g europium trichloride crystals, and react at 50°C for 8h. After the reaction, the polymer was precipitated with ethanol, washed with water, and dried to obtain the polymer-rare earth binary complex NAPSF-Eu(Ⅲ).

[0027] Using 343 nm as the excitation wavelength, the fluorescence emission spectru...

Embodiment 2

[0028] Example 2: In a four-necked flask, add 0.5g chloromethylated polystyrene (CMPS) and 50mL dimethyl sulfoxide to fully dissolve the PS, then add 0.32g 6-hydroxy-2-naphthoic acid and 0.36g Anhydrous sodium carbonate, constant temperature reaction at 70°C for 8 hours, acidify the system with dilute hydrochloric acid, then precipitate the polymer with ethanol, wash with water, and dry to obtain the modified polystyrene NAPS with side chain bonded naphthoic acid (NA) ligand. The bonding amount of naphthoic acid was 3.02 mmol / g.

[0029] In the four-necked flask, add 0.5g NAPS and dissolve in 50mL DMSO, adjust the pH=6~7 with NaOH solution, then add 0.18g europium trichloride crystal (0.245mmol), and react at 50°C for 8h. Using ethanol as a precipitant, the polymer was precipitated, washed with water, and dried to obtain the polymer-rare earth binary complex NAPS-Eu(Ⅲ).

[0030] Using 343 nm as the excitation wavelength, the fluorescence emission spectrum of the complex NAPS-...

Embodiment 3

[0031] Example 3: In a four-necked flask, add 0.45g chloromethylated polysulfone (CMPSF) and 50mL dimethylacetamide to fully dissolve CMPSF, then add 0.25g of 6-hydroxy-2-naphthoic acid and 0.21 g anhydrous sodium carbonate, react at a constant temperature of 60°C for 8 hours, acidify the system with dilute hydrochloric acid, then precipitate the polymer with ethanol, wash with water, and dry to obtain the modified polysulfone NAPSF with naphthoic acid (NA) ligands bonded to the side chain. The bonding amount of naphthoic acid was 1.57 mmol / g.

[0032] In a four-neck flask, add 0.3g NAPSF and dissolve in 50mL dimethylacetamide, adjust pH=6~7 with NaOH solution, then add 0.08g terbium trichloride crystals, and react at 50°C for 8h. After the reaction, the polymer was precipitated with ethanol, washed with water, and dried to obtain the polymer-rare earth binary complex NAPSF-Tb(Ⅲ).

[0033] With 295nm as the excitation wavelength, the fluorescence emission spectrum of the comp...

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Abstract

The invention belongs to the field of a rare earth-polymer composite luminescent material, and specifically relates to a luminescent material of naphthoic acid functionalized polymer and rare earth complex and a preparation method of the luminescent material. In the preparation method, a naphthalene acid ligand with coordination and sensitization dual-function roles on rare earth ions is introduced into a polymer side group; and the ligand not only can form stable polymer-rare earth complex together with the rare earth ions, but also has a large conjugate rigid plane, can greatly enhance energy transfer action of the polymer ligand on the rare earth ions, and enhances the luminescence property. The method disclosed by the invention not only is easy to achieve, but also solves the problems that the rare earth complex in the prior art has dispersion inequality and poor polymer substrate performance.

Description

technical field [0001] The invention belongs to the field of rare earth-polymer composite luminescent materials, and in particular relates to a naphthoic acid functionalized polymer-rare earth complex luminescent material and a preparation method thereof. Background technique [0002] Photoluminescent rare earth complexes have good fluorescence monochromaticity, high luminous intensity and high quantum efficiency, and are a kind of luminescent materials with unique properties. However, small molecule rare earth complexes have disadvantages such as poor stability and poor dispersion in polymers, which limit the wide application of rare earth luminescent materials. Polymer materials are widely used due to many advantages such as good physical and mechanical properties, convenient synthesis, easy molding and processing, light weight, low cost, and corrosion resistance. JP2000-154325 (2000) disclosed a method for preparing color-changing rare earth / polymer composite materials w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C08G75/20C08F12/08C08F8/42
Inventor 高保娇王蕊欣王明娟赵兴龙喻龙
Owner ZHONGBEI UNIV
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