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Preparation method of white light macromolecular complex fluorescent powder containing europium, terbium and zinc

A technology of macromolecules and complexes, applied in the preparation and application of luminescent materials, can solve the problems of poor luminescence performance and insufficient coordination number of rare earth ions, etc., and achieve the effects of good luminescence performance, simple preparation process and accurate data

Active Publication Date: 2018-11-23
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, macromolecular complexes are mostly synthesized by direct coordination between macromolecular ligands and rare earth metal ions. This method will lead to insufficient coordination numbers of rare earth ions, and it is difficult for macromolecular ligands to achieve energy level matching with different rare earth ions at the same time, resulting in Luminous performance is poor

Method used

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  • Preparation method of white light macromolecular complex fluorescent powder containing europium, terbium and zinc
  • Preparation method of white light macromolecular complex fluorescent powder containing europium, terbium and zinc
  • Preparation method of white light macromolecular complex fluorescent powder containing europium, terbium and zinc

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Embodiment 1

[0031] A preparation method of a white light macromolecular complex fluorescent powder containing europium and terbium zinc, comprising the following steps:

[0032] 1) Preparation of macromolecular ligands

[0033] Weigh 0.4415g of 4-vinylbenzoic acid, 3.18mL of methyl methacrylate, and 0.0035g of initiator azobisisobutyronitrile, fully dissolve them in dimethyl sulfoxide solvent by ultrasonic vibration, and then transfer the solution to and fix it in a constant temperature water bath, seal the mouth of the test tube with a rubber stopper with a glass catheter, open the mouth of the test tube, insert the glass catheter into the bottom of the test tube, and pass through the glass catheter at room temperature Nitrogen and oxygen removal were carried out for 30 minutes. After the nitrogen and oxygen removal were completed, the branch of the test tube and the glass conduit port were connected and sealed with a rubber tube, and the temperature of the constant temperature water bat...

Embodiment 2

[0050] A preparation method of a white light macromolecular complex fluorescent powder containing europium and terbium zinc, comprising the following steps:

[0051] 1) Preparation of macromolecular ligands

[0052] Weigh 0.4413g of 4-vinylbenzoic acid, fully dissolve it in a test tube with dimethyl sulfoxide, then add 3.19mL of methyl methacrylate in the test tube; weigh 0.0036g of the initiator Azobisisobutyronitrile, fully dissolved in dimethyl sulfoxide, then add the dimethyl sulfoxide solution of azobisisobutyronitrile into the test tube; then, the solution in the test tube is continuously nitrogen Oxygen was exhausted for 30 minutes, and after the nitrogen and oxygen removal were completed, the test tube was sealed and placed in a constant temperature water bath at 75°C, and reacted for 48 hours; Wash the sulfone repeatedly to remove unreacted monomers and impurities, and use anhydrous methanol; finally, place the product in a constant temperature drying oven at 55°C to...

Embodiment 3

[0069] A preparation method of a white light macromolecular complex fluorescent powder containing europium and terbium zinc, comprising the following steps:

[0070] 1) Preparation of macromolecular ligands

[0071] Weigh 0.4414g of 4-vinylbenzoic acid, 3.17mL of methyl methacrylate, and 0.0037g of initiator azobisisobutyronitrile, fully dissolve them in dimethyl sulfoxide solvent by ultrasonic vibration, and then transfer the solution to and fix it in a constant temperature water bath, seal the mouth of the test tube with a rubber stopper with a glass catheter, open the mouth of the test tube, insert the glass catheter into the bottom of the test tube, and pass through the glass catheter at room temperature Nitrogen and oxygen removal were carried out for 30 minutes. After the nitrogen and oxygen removal were completed, the branch of the test tube and the glass conduit port were connected and sealed with a rubber tube, and the temperature of the constant temperature water bat...

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Abstract

The invention provides a preparation method of white light macromolecular complex fluorescent powder containing europium, terbium and zinc. The preparation method solves the problems that the existingpreparation method easily causes insufficient coordination number of rare earth ions, and macromolecular ligands are difficult to reach energy level matching with different rare earth ions at the same time, resulting in poor luminescent performance and the like. The preparation method provided by the invention comprises the following steps: firstly, preparing macromolecular ligands; then, enabling the macromolecular ligands to coordinate with metal ions and cooperate with micromolecular ligands to prepare macromolecular complex fluorescent powder of three primary colors (red, green and blue);and performing blending to obtain the macromolecular complex white light fluorescent powder containing europium, terbium and zinc. The method has the advantages that the preparation process is simple, the data is accurate, and the luminescent performance of the white light fluorescent powder is better. Under the excitation of 365nm ultraviolet light, color coordinates x=0.330, y=0.338, so that the macromolecular complex white light fluorescent powder containing europium, terbium and zinc has good luminescent performance.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of luminescent materials, and in particular relates to a preparation method of a white light macromolecular complex fluorescent powder containing europium and terbium zinc. Background technique [0002] Near-ultraviolet white light LED has the characteristics of high color rendering, high rendering index and controllable light color, and has become the first choice for LED lighting. Near-ultraviolet excited phosphor is the decisive factor for LED luminous performance. Macromolecular complexes have become a research hotspot for near-ultraviolet excited phosphors because of their excellent luminescence properties of rare earth complexes, excellent mechanical properties of polymers, and easy processing characteristics. At present, macromolecular complexes are mostly synthesized by direct coordination between macromolecular ligands and rare earth metal ions. This method will lead t...

Claims

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Application Information

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IPC IPC(8): C09K11/06C08F212/14C08F220/14
CPCC08F212/14C09K11/06C09K2211/1425C09K2211/182C09K2211/188C08F220/14Y02B20/00
Inventor 张爱琴王倩李栋信梁建贾虎生许并社
Owner TAIYUAN UNIV OF TECH
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