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Blue fluorescent material and preparation method thereof

A technology for blue fluorescent and fluorescent materials, applied in the field of cadmium compound blue fluorescent materials and their preparation, can solve the problems of easy aggregation and crystallization of devices, decreased device life, fluorescence quenching, etc. The effect of good photoelectric activity, good blue light emission performance

Inactive Publication Date: 2012-03-28
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, small molecule luminescent materials are prone to fluorescence quenching in the solid state, and devices made by general doping methods are prone to aggregation and crystallization, and the life of the device is reduced.

Method used

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  • Blue fluorescent material and preparation method thereof
  • Blue fluorescent material and preparation method thereof
  • Blue fluorescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 60mmol of sulfaquinoxaline, 30mmol of cadmium nitrate, 30mmol of 4,4'-bipyridyl, and 10ml of industrial ethanol into the 25mL polytetrafluoroethylene lining of the stainless steel reactor, and stir to make it evenly mixed.

[0025] Seal the reaction kettle and place it in an oven, heat at 60°C for 24 hours; then cool to room temperature naturally, and open the reaction kettle to obtain yellow blocky crystals.

Embodiment 2

[0027] Add 30mmol of sulfaquinoxaline, 60mmol of cadmium nitrate, 60mmol of 4,4'-bipyridyl, and 15ml of industrial ethanol into the 25mL polytetrafluoroethylene lining of the stainless steel reactor, and stir to make it evenly mixed.

[0028] Seal the reaction kettle and place it in an oven, heat at 100°C for 24h; then cool it down to room temperature naturally, and open the reaction kettle to obtain yellow blocky crystals.

Embodiment 3

[0030] Add 20mmol of sulfaquinoxaline, 80mmol of cadmium nitrate, 80mmol of 4,4'-bipyridine into the 25mL polytetrafluoroethylene lining of the stainless steel reaction kettle, add 15ml of industrial ethanol, and stir to make it evenly mixed.

[0031] Seal the reaction kettle and place it in an oven, heat at 130°C for 24 hours; then cool it down to room temperature naturally, and open the reaction kettle to obtain yellow blocky crystals.

[0032] The crystal is sucked out with a straw and air-dried naturally; after determination, the molecular formula of the cadmium compound is C 42 h 40 CdN 10 o 6 S 2 , the crystal system is monoclinic, the space group is C2 / c, and the unit cell parameters α=90.00°, β=126.005°, γ=90.00°, the cadmium ion is an octahedral coordination mode, 4 nitrogen coordination atoms come from two sulfaquinoxaline ligands, and 2 nitrogen coordination atoms come from two A 4,4'-bipyridine. Its crystal structure is shown in figure 1 shown.

[0033] Th...

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Abstract

The invention discloses a blue fluorescent material and a preparation method thereof. Sulfaquinoxaline and 4,4'-bipyridyl which have conjugate phi bonds and cadmium ions with optical activity are chemically reacted to prepare a sulfaquinoxaline cadmium compound with a certain spatial structure, and the molecular formula of the sulfaquinoxaline cadmium compound is C42H40CdN10O6S2, wherein M is equal to 957.36. The crystal system is monoclinic; the space group is C2 / c; and in the unit cell parameters, alpha is 90.00 degrees, beta is 126.005 degrees, and gamma is 90.00 degrees. Because of Cd (II) ions of rich optical activity and conjugate phi bonds, the compound fluorescent material is favorable for electron transition and energy transfer, has good photoelectric activity, shows good blue emitting performance, and can be used as a fluorescent material.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a cadmium compound blue fluorescent material and a preparation method thereof. Background technique [0002] Fluorescent materials usually refer to the ability to absorb and store energy after receiving external energy and convert it into light energy in a dark place. It is calcined by metal (zinc, chromium) sulfide or rare earth oxide and trace active agent. . Colorless or light white, under the irradiation of ultraviolet light (200-400nm), according to the different types and contents of metals and activators in the pigment, it presents various colors of visible light (400-800nm). [0003] With the advancement of science and technology, more and more researches on fluorescence have been carried out, and the application range of fluorescent substances has become wider and wider. In addition to being used as dyes, fluorescent substances are also widely used in orga...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07F3/08
Inventor 李伟伟李星
Owner NINGBO UNIV
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