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Rare-earth organic complex light conversion agent and method of preparing the same

A rare-earth organic and light-transforming agent technology, which is applied in the direction of organic chemistry, chemical instruments and methods, and compounds containing elements of group 3/13 of the periodic table, can solve problems such as unsatisfactory utilization, and achieve low production costs and enhanced Good effect of fluorescence intensity and spectral matching

Active Publication Date: 2011-06-15
JIANGSU BOILN PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the light conversion efficiency is high, the utilization rate is not ideal

Method used

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  • Rare-earth organic complex light conversion agent and method of preparing the same
  • Rare-earth organic complex light conversion agent and method of preparing the same
  • Rare-earth organic complex light conversion agent and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Take samarium oxide Sm in a ratio of 0.5:0.5 by molar ratio 2 o 3 and yttrium oxide Y 2 o 3 , dissolved in hydrochloric acid, heated to react to obtain chloride salt crystals, dissolved in absolute ethanol, and made into a solution I with a concentration of 1mol / L; Phenylphen was dissolved in absolute ethanol respectively to prepare solutions II and III with a concentration of 1 mol / L. Mix solutions I, II and III according to the molar ratio of crystalline salt, TTA, and o-phenanthroline phen as a mixture of 1:3:1, stir and react in a water bath at 40°C for 7 hours, adjust the pH value to 5 with NaOH, and obtain Precipitated product; precipitated for 2 hours, filtered the product, washed repeatedly with absolute ethanol and distilled water, dried and ground in an oven at 50°C, and obtained the light transfer agent Sm 0.5 Y 0.5 (TTA) 3 phen. The light converting agent emits 647nm red light under the excitation of 360nm-380nm ultraviolet light, especi...

Embodiment 2

[0023] Embodiment 2: Take samarium oxide Sm in a ratio of 0.3:0.4:0.3 by molar ratio 2 o 3 , Lanthanum Oxide La 2 o 3 and gadolinium oxide Gd 2 o 3 , dissolved in nitric acid, heated to react to obtain nitrate crystals, which were dissolved in absolute ethanol to obtain a solution I with a concentration of 1mol / L; -Bipyridine Dipy was dissolved in absolute ethanol respectively to prepare solutions II and III with a concentration of 1 mol / L. Mix solutions I, II and III according to the molar ratio of crystalline salt, TTA, and 2,2'-bipyridine Dipy at a ratio of 1:3:2, stir and react in a water bath at 60°C for 6 hours, and adjust the pH value to 6.5 with ammonia water, The precipitated product was obtained; after 1 hour of precipitation, the product was filtered, washed repeatedly with absolute ethanol and distilled water, dried and ground in an oven at 45°C, and the light converting agent Sm 0.3 La 0.4 Gd 0.3 (TTA) 3Dipy 2 . The light converting agent emits red light...

Embodiment 3

[0024] Embodiment 3: Take samarium oxide Sm in a ratio of 0.2:0.8 by molar ratio 2 o 3 and lanthanum oxide Gd 2 o 3, dissolved in phosphoric acid, heated and reacted to obtain phosphate crystals, dissolved in absolute ethanol to obtain a solution I with a concentration of 1mol / L; As solution II of 1mol / L, the synergistic ligand 2,2'-bipyridine Dipy and o-phenanthroline phen are dissolved in absolute ethanol at a molar ratio of 0.7:0.3 to form a solution with a concentration of 1mol / L III. Mix solutions I, II and III according to the molar ratio of crystal salt, TTA, 2,2'-bipyridine Dipy and o-phenanthroline phen in a ratio of 1:3:1, stir and react in a water bath at 70°C for 5 hours, and pass through Adjust the pH value to 5 with ammonia water, filter the obtained product after 2 hours of precipitation, wash repeatedly with absolute ethanol and distilled water, dry and grind in an oven at 60°C, and obtain the light converting agent Sm 0.2 Gd 0.8 (TTA) 3 Dipy 0.7 phen ...

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Abstract

The present invention discloses a bionical rare earth organic complex light conversion agent and a preparation method thereof, and the composition of the bionical rare earth organic complex light conversion agent is as follows: SmxM[1-x](TTA)mLn. The light conversion agent chooses the easily obtained, cheap samarium ion as a central ion, lanthanum La<3+>, gadolinium Gd<3+> and yttrium Y<3+> as heterocaryotic central ions, organic compound (Alpha-thenoyltrifluoroaceton) with the lowest excited triplet level matching the Sm<3+> excited level as a ligand and o-phenanthroline, 2,2'-bipyridyl, trioctylphosphine oxide, triphenylphosphine oxide, etc. as second ligands. The method for preparing the light conversion agent includes the following steps: dissolution, stirring and reaction, deposition, filtration, washing, drying, grinding and finished product, and the appearance of the product is white or light yellow. The light conversion agent provided by the present invention can convert ultraviolet light into red light with a wavelength between 620nm and 660nm, the emitting efficiency is high, the color purity is high, and the strongest emission wavelength is close to the position of the maximum absorption peak of chlorophylls (a, b), so the light conversion agent can meet the physiological requirement of the photosynthesis of plants.

Description

Technical field: [0001] The invention relates to a light-changing agent and a preparation method thereof, in particular to a rare-earth organic complex light-changing agent beneficial to plant photosynthesis and a preparation method thereof. light system. Background technique: [0002] According to research, plants mainly rely on chlorophyll for photosynthesis. Studies have shown that blue-violet light and red-orange light match the absorption spectrum of the molecular structure of chlorophyll a and b, which is beneficial to the photosynthesis of plants. Ultraviolet light is not only harmful to photosynthesis, but also easily causes the aging of polymer materials and crop branches, and promotes the reproduction and growth of various pathogens in the soil. Therefore, fluorescent materials that change the spectral composition of sunlight (convert harmful ultraviolet light and invalid yellow-green light into blue-violet light and red-orange light required by plants) are added...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C07F5/00
Inventor 许仲梓陆春华李剑倪亚茹
Owner JIANGSU BOILN PLASTICS CO LTD
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