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SiO2-modified terbium complex PET luminescent material and preparation method thereof

A technology of luminescent materials and silicon dioxide, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of poor thermal stability and achieve the effect of maintaining stable mechanical and crystallization properties

Active Publication Date: 2019-05-03
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The rare earth complexes themselves have excellent luminescent properties, but their poor thermal stability limits their applications

Method used

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  • SiO2-modified terbium complex PET luminescent material and preparation method thereof
  • SiO2-modified terbium complex PET luminescent material and preparation method thereof
  • SiO2-modified terbium complex PET luminescent material and preparation method thereof

Examples

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Embodiment 1

[0035] Such as figure 1 As shown, the present invention discloses a method for preparing a silica-modified terbium complex PET luminescent material, which includes the following steps:

[0036] First of all, in nano silicon dioxide (SiO 2 ) Preparation of nano-chlorosilica balls based on:

[0037] Preparation of chlorosilica balls: Add nano-silica (size about 20-200nm, pre-dried for 24 hours at 80°C in a vacuum oven) in a three-necked flask, add benzene to dissolve it, protect it with nitrogen, and pass Thionyl chloride is added dropwise to the funnel, then there will be HCl and SO 2 Generated and reacted at 65°C for 4 hours. Then the reaction mixture was centrifuged at 8000r / min for 15min. Wash with benzene three times, dry the obtained chlorosilica balls in a vacuum, and store them in a closed container. The mass-volume ratio of nano-silica to benzene is 1:8-15g / ml; nano-silica and thionyl chloride The mass-volume ratio is 1:6-8g / ml.

[0038] In the second step, tetraethylene gl...

Embodiment 2

[0054] Experimental purpose and method: In order to study the effect of low molecular weight PET-based terbium complex hybrid luminescent group on the luminescence properties of rare earths, this example uses the low molecular weight PET-based terbium complex hybrid luminescent group solution synthesized in Example 1 as the research object , The research method is: using RF-5301P fluorescence spectrophotometer, the fluorescence test of a low molecular weight PET-based terbium complex hybrid luminescent group solution.

[0055] Such as figure 2 As shown, the emission spectrum of the low-molecular-weight PET-based europium complex hybrid luminescent group has an excitation wavelength at 331.07nm and an emission wavelength at 544.02nm. This method successfully prepared two low-molecular-weight PET-based terbium complex hybrid luminescent groups. And the introduction of the block polymer does not affect the luminescence performance of the rare earth ion itself, and finally the comple...

Embodiment 3

[0059] Experimental purpose and method: To study nano silica / LMPET-4G or LMPET-5CG / Phen / Tb 3+ The influence of these two hybrid luminescent materials on the mechanical properties of industrial PET polyester crystals. In this example, the nano-silica / LMPET-4G or LMPET-5CG / Phen / Tb synthesized in Example 1 3+ These two hybrid luminescent materials are used as experimental objects to study their influence on the mechanical properties of linear polyester chips. The specific method is: use DSM Xplore 5&15 micro blender melt blending method to fully mix, and use DSM Xplore 10cc micro injection molding Standard samples are made in the instrument. The melting temperature in the blender is 290°C, and the mold temperature in the injection molding machine is 50°C for pure linear polyester. After adding the low molecular weight PET-based europium complex hybrid luminescent group synthesized in Example 1, it is changed to 40°C. Co-preparation of synthesized nano-silica / LMPET-4G or LMPET-5CG / P...

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Abstract

The invention discloses a SiO2-modified terbium complex PET luminescent material and a preparation method thereof. The method includes: 1) preparing nano chlorosilicone spheres; 2) grafting tetraglycol (4G) or 1,5-pentanediol (5CG) onto the surface of the nano chlorosilicone spheres; 3) preparing LMPET-4G / Phen / Tb3+ or LMPET-5CG / Phen / Tb3+; 4) preparing nano-SiO2 / LMPET-4G / Phen / Tb3+ or nano-SiO2 / LMPET-5CG / Phen / Tb3+; 5) as nano nucleating additives, uniformly dispersing the two modified nano-SiO2 terbium complex hybrid materials into a PET resin substrate to obtain two PET-based terbium complex hybrid luminescent materials. The materials not only have the luminescent performance of the terbium complex, but also maintain the mechanical and crystallizing performances of the PET substrate and improve the properties to a certain degree.

Description

Technical field [0001] The invention relates to the preparation field of PET luminescent materials, in particular to a silica modified terbium complex PET luminescent material and a preparation method thereof. Background technique [0002] Rare earth ions have the advantages of high luminous intensity, pure color, high fluorescence efficiency, and rich spectral lines. In addition, the color of rare earth ions has nothing to do with the environment where the rare earth ions are located, but mainly depends on the rare earth ions themselves. The rare earth complexes themselves have excellent luminescence properties, but their poor thermal stability limits their applications. In recent years, people have begun to use various methods to uniformly disperse and compound organic photoactive substances and inorganic substrates at lower temperatures to prepare composite light-emitting functional materials that may have the characteristics of organic and inorganic materials. Rare earth el...

Claims

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Application Information

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IPC IPC(8): C09K11/02C09K11/06
Inventor 王瑶李浩唐建国刘继宪黄林军王彦欣王薇邢丽
Owner QINGDAO UNIV
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