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Light conversion agent and preparation method thereof

A light-converting agent, selected technology, used in chemical instruments and methods, luminescent materials, organic chemistry, etc.

Inactive Publication Date: 2014-06-11
洛阳新巨能高热技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that the main emission peak is around 613nm. Although it can improve the light quality of crop photosynthesis, it has a large deviation from the photosynthesis of crops absorbing the 640-660nm light area.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] According to the required stoichiometric ratio, weigh 0.04mol of Sm 2 o 3 and 0.01mol of La 2 o 3 , dissolved in HNO 3 , adjust PH=7-8, slowly add to 0.2mol phen isopropanol solution under constant stirring, 70°C, stir for 30 minutes, then stand for 2 hours, filter and dry to obtain white powder. The composition was determined as [Sm 0.8 (La) 0.2 phen 2 ], the yield is 95%, excited with 380nm ultraviolet light, the strongest emission peak is 649nm.

Embodiment 2

[0021] According to the stoichiometric ratio, weigh 0.04mol of Sm 2 o 3 and 0.01mol of Tb 2 o 3 , dissolved in HNO 3 , adjust the pH to 7-8, slowly add it into the toluene solution of 0.2mol 2DP under constant stirring, stir at 70°C for 30 minutes, then let it stand for 2 hours, filter, and dry to obtain a white powder. The composition was determined as [Sm 0.8 (Tb) 0.2 2DP 2 ], the yield is 94%, excited with 380nm ultraviolet light, the strongest emission peak is 649nm.

Embodiment 3

[0023] Weigh 0.04 mol of Sm according to the desired stoichiometric ratio 2 o 3 and 0.01mol of Tb 2 o 3 , dissolved in HNO 3 , adjust PH=7-8, slowly add to 0.3mol TTA isopropanol solution, 70°C, stir for 30 minutes, then stand for 2 hours, filter and dry to obtain white powder. The composition was determined as [Sm 0.8 (Tb) 0.2 ·TTA 2 ], the yield was 95%, and the strongest emission peak at 649nm was excited by 380nm ultraviolet light.

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PUM

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Abstract

The invention relates to a light conversion agent and a preparation method thereof. The formula of the light conversion agent is [Sm(M)<1-x>.Ln], wherein the M represents a rare earth ion, L represents an organic ligand, 0

Description

technical field [0001] The invention belongs to the technical field of rare-earth metal-containing luminescent materials, and in particular relates to a rare-earth organic coordination compound light conversion agent for agricultural film and a preparation method thereof. Background technique [0002] The light conversion agent used for light conversion agricultural film, the organic coordination compound of rare earth Eu(Ⅲ), is currently the most researched type of light energy conversion material, and crops perform photosynthesis, mainly absorbing 400-460nm blue-violet light and 640- 660nm red-orange light. The so-called light-changing agent is to add it to the agricultural film to absorb the ultraviolet light (280-390nm) that has little effect on crop growth in sunlight and convert it into red-orange light that is necessary for crop photosynthesis, thereby improving light quality and enhancing The photosynthesis of crops can make plants grow stronger, improve the quality...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06
Inventor 刘全泰田小武
Owner 洛阳新巨能高热技术有限公司
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