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Rare earth blue red light conversion material and preparation thereof

A fluorescent material, red light technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problem of not matching the maximum absorption peak position, and achieve the effect of good luminous intensity, good compatibility and fine particle size

Inactive Publication Date: 2008-10-08
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the characteristic red light peak of europium is not quite consistent with the maximum absorption peak of plant chlorophyll, so there are still some limitations in the application of agricultural film

Method used

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  • Rare earth blue red light conversion material and preparation thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 0.4mmolSm 2 o 3 , 0.05mmolTb 4 o 7 Dissolve in 10ml of concentrated hydrochloric acid (concentration: 33%), heat to remove the hydrochloric acid to obtain rare earth chlorides, dissolve the rare earth chlorides in 30ml of distilled water to obtain rare earth chloride solutions. Separately, 3 mmol of N-phenylanthranilic acid and 1 mmol of 1,10-phenanthroline were weighed and dissolved in 20 ml of ethanol, respectively. Transfer the rare earth chloride into the flask, install magnetic stirring, and reflux device. After fully stirring and mixing, add the ethanol solution of N-phenylanthranilic acid, then add 1,10-phenanthroline ethanol solution after fully stirring, adjust the pH value to 6-7 with ammonia water, heat to 80°C, and A large amount of white powdery precipitate formed. After refluxing for 3-4 hours, hot filter, wash the precipitate with 80°C hot distilled water three times, and vacuum dry (80°C, 0.05MPa) to obtain the light converting agent.

[0023] The ...

Embodiment 2

[0025] 0.3mmolSm 2 o 3 , 0.0375mmolTb 4 o 7 In concentrated hydrochloric acid, heat to remove the hydrochloric acid to obtain rare earth chlorides, and dissolve the rare earth chlorides in 30ml distilled water to obtain rare earth chloride solutions. Separately, 3 mmol of N-phenylanthranilic acid and 1 mmol of 1,10-phenanthroline were weighed and dissolved in 20 ml of ethanol, respectively. Transfer the rare earth chloride into the flask, install magnetic stirring, and reflux device. After fully stirring and mixing, add the ethanol solution of N-phenylanthranilic acid, then add the ethanol solution of 1,10-phenanthroline after fully stirring, adjust the pH value to 6-7 with ammonia water, heat to 80°C, A large amount of white powdery precipitate formed. After refluxing for 3-4 hours, hot filter, wash the precipitate with 80°C hot distilled water three times, and vacuum dry (80°C, 0.05MPa) to obtain the light converting agent. The composition of the resulting fluorescent ...

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Abstract

The invention discloses rare earth blue-red light conversion material which is composed of the composition expressed in the formula as follows: SmxTb1-x (N-hpa) 3 (phen); wherein, the numeric area of x in the formula is that the x is more than 0.5 and is less than 1; the novel rare earth blue-red light fluorescence material has good luminous intensity and micro-fine particle diameter; the preparation method of the rare earth blue-red light fluorescence material has the advantages of simple and easy application, low cost, avoiding excessive heating procedures under the room temperature and the adoption of reducing atmosphere; the rare earth blue-red light fluorescence material of the invention has wide application range; for example, the rare earth blue-red light fluorescence material can be used as display and lighting fluorescence materials, anti-counterfeiting fluorescence material and coating fluorescence material; because the novel fluorescence material has good compatibility with high polymer, the fluorescence material can produce good agricultural films; the novel fluorescence material light conversion waveband is 440nm, 645nm and matched with the waveband needed by the plant photosynthesis; the fluorescence material has wide application on the agricultural films.

Description

technical field [0001] The present invention relates to a rare earth blue-red light conversion material, its preparation and application, and more specifically relates to an organic ligand rare earth blue-red light conversion material, its preparation method and application. Background technique [0002] Rare earth is a huge luminescent treasure house. Rare earth luminescent materials have many advantages: narrow emission spectrum band, high color purity, bright colors; strong light absorption ability, high conversion efficiency: wide emission wavelength distribution area; 6 orders of magnitude: stable physical and chemical properties, high temperature resistance, and can withstand the effects of high-power electron beams, high-energy radiation and strong ultraviolet light. It is these excellent properties that make rare earth compounds the main research object for exploring high-tech materials. At present, rare earth luminescent materials are widely used in lighting, displ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06
Inventor 彭子飞徐铸罗彩芹
Owner SHANGHAI NORMAL UNIVERSITY