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Fluorescent chemical compound for adjusting white-light LED and preparing method and application thereof

A fluorescent compound, white light technology, applied in the field of fluorescent materials, can solve the problems of weak luminescence, high color temperature, low color rendering index, etc., and achieve the effects of sufficient sources, uniform crystal particles, and good repeatability

Active Publication Date: 2017-02-22
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of red phosphor, it emits weak light in the red spectral region, resulting in a high color temperature and low color rendering index

Method used

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  • Fluorescent chemical compound for adjusting white-light LED and preparing method and application thereof
  • Fluorescent chemical compound for adjusting white-light LED and preparing method and application thereof
  • Fluorescent chemical compound for adjusting white-light LED and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

Embodiment 1

[0028] At room temperature, respectively put 10mmol of manganese bromide and 10mmol of dibromo-1,4-dimethyl-1,4-diazabicyclo[2.2.2]octane into a beaker, slowly at a rate of 10ml / min Add distilled water and stir to dissolve. The volume of distilled water is 10mL, and then the two beakers are mixed with each other. After stirring evenly, stand at room temperature for 7 days to obtain the compound C with fluorescent properties. 8 h 18 N 2 Br 3 mn 0.5 .

Embodiment 2

[0030] At room temperature, put 20mmol of manganese bromide and 10mmol of dibromo-1,4-dimethyl-1,4-diazabicyclo[2.2.2]octane into a beaker, slowly at a rate of 15ml / min. Add distilled water and stir to dissolve. The volume of distilled water is 10mL, and then the two beakers are mixed with each other. After stirring evenly, stand at room temperature for 7 days to obtain the compound C with fluorescent properties. 8 h 18 N 2 Br 3 mn 0.5 .

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Abstract

The invention discloses a fluorescent chemical compound. The chemical formula is C8H18N2Br3Mn0.5. The crystal of the fluorescent chemical compound belongs to a trigonal system and a Pa-3 space group at the temperature of 296 K. The invention further provides a preparing method of the fluorescent chemical compound. Soluble salt containing Mn2+ and triethylene diamine derivative are mixed, and solution natural volatile solvent is adopted to prepare the product through self-assembly. The red fluorescent chemical compound is obtained through preparation, the adopted material preparing process is simple and easy to operate, the raw materials are abundant in source, and the preparing method is low in production cost and high in yield and repeatability; thermal decomposition temperature point is high, and the crystal is uniform in particle size.

Description

technical field [0001] The invention belongs to the field of fluorescent materials, and in particular relates to a fluorescent compound with red light emission under ultraviolet light excitation, a preparation method and an application thereof. Background technique [0002] In the current energy shortage, energy conservation and environmental protection have become a major concern of all countries. Some countries have gradually banned the use of incandescent lamps and gradually phased out them, and promoted energy-saving and environmentally friendly fluorescent lamps. In the past ten years, LED luminescent phosphors such as europium, samarium, praseodymium, terbium and other rare earth doped nitrides, nitrogen oxides, silicates, aluminates, etc., and aluminates doped with tetravalent manganese ions have been reported one after another. The preparation conditions of nitrogen oxides and nitrides are usually relatively harsh, requiring special conditions such as high temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/61
CPCC09K11/06C09K11/615C09K2211/1044Y02B20/00
Inventor 陈立庄曹星星
Owner JIANGSU UNIV OF SCI & TECH
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