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Multi-core rare earth doped organic complex light conversion agent and light conversion master batch as well as preparation method and application thereof

A technology of organic complexes and light-converting masterbatches, applied in the fields of botanical equipment and methods, chemical instruments and methods, applications, etc., can solve the problems of low absorption intensity, difficulty in exciting rare earth ions to emit light, etc.

Pending Publication Date: 2021-10-08
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the f-f electronic transition of the rare earth ion itself is a forbidden transition, the absorption intensity is very low, and it is difficult to excite the rare earth ion to make it emit light.

Method used

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  • Multi-core rare earth doped organic complex light conversion agent and light conversion master batch as well as preparation method and application thereof
  • Multi-core rare earth doped organic complex light conversion agent and light conversion master batch as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of multi-nuclear rare earth doped organic complex light conversion agent:

[0047] Weigh EuCl at a molar ratio of 1:8:1 3 ·6H 2 O and SmCl 3 ·6H 2 O and YCl 3 ·6H 2 A total of 1 mmol of O was dissolved in 10 mL of absolute ethanol, mixed and added to a three-necked flask, stirred until completely dissolved, and continued to stir at 60°C for 0.5 h to obtain a rare earth mixed solution.

[0048] Prepare 10 mL each of 0.03 mmol / L salicylic acid ethanol solution and 0.01 mmol / L o-phenanthroline ethanol solution, and adjust the pH to 7 with 2.5 mol / L NaOH solution.

[0049] Add salicylic acid ethanol solution and o-phenanthroline ethanol dropwise to the rare earth mixed solution respectively, react at 70°C for 4 hours, let it stand and cool to room temperature, wash with water three times, wash with alcohol three times, filter with suction, and dry at 80°C , to obtain multi-nuclear rare earth doped organic complex light conversion agent.

[0050] Preparati...

Embodiment 2

[0059] Preparation of multi-nuclear rare earth doped organic complex light conversion agent:

[0060] Weigh EuCl at a molar ratio of 2:6:2 3 ·6H 2 O and SmCl 3 ·6H 2 O and YCl 3 ·6H 2 A total of 1mmol of O was dissolved in 10mL of absolute ethanol, mixed and added to a three-necked flask, stirred until completely dissolved; and continued to stir at 60°C for 0.5h to obtain a rare earth mixed solution.

[0061] Prepare 10 mL each of 0.03 mmol / L benzoic acid ethanol solution and 0.01 mmol / L o-phenanthroline ethanol solution, and then adjust the ligand solutions to pH=7 with 2.5 mol / L NaOH solution.

[0062] Add benzoic acid ethanol solution and o-phenanthroline ethanol solution dropwise to the rare earth mixed solution respectively, react at 70°C for 4 hours, let stand and cool to room temperature, wash with water three times, wash with alcohol three times, filter with suction, and dry at 80°C , to obtain multi-nuclear rare earth doped organic complex light conversion agent...

Embodiment 3

[0070] Preparation of multi-nuclear rare earth doped organic complex light conversion agent:

[0071] Weigh EuCl at a molar ratio of 3:5:3 3 ·6H 2 O and SmCl 3 ·6H 2 O and YCl 3 ·6H 2 A total of 1mmol of O was dissolved in 10mL of absolute ethanol, mixed and added to a three-necked flask, stirred until completely dissolved; and continued to stir at 60°C for 0.5h to obtain a rare earth mixed solution.

[0072] Prepare 10 mL each of 0.03 mmol / L benzoic acid ethanol solution and 0.01 mmol / L bipyridine ethanol solution, and then adjust the pH to 6 with 2.5 mol / L NaOH.

[0073] Add benzoic acid ethanol solution and bipyridine ethanol solution dropwise to the rare earth mixed solution respectively, react at 70°C for 4 hours, let stand and cool to room temperature, wash with water three times, wash with alcohol three times, filter with suction, and dry at 80°C to obtain Multi-nuclear rare earth doped organic complex light conversion agent.

[0074] Preparation of light convers...

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Abstract

The invention discloses a multi-core rare earth doped organic complex light conversion agent and a preparation method thereof, a light conversion master batch and a preparation method and an application thereof. The molecular formula general formula of the prepared multinuclear rare earth doped organic complex light conversion agent is EuxSm1-x-zYzI3L, z is equal to 0.01-0.3, and x+z is equal to 1. The obtained multi-core rare earth doped organic complex light conversion agent is stable in structure and high in weather resistance; the light conversion master batch prepared from the light conversion agent is used in a light conversion agricultural film, can absorb ultraviolet light of 200-400 nm and convert the ultraviolet light into red orange light with the wavelength of 620-650 nm, can effectively promote growth and development of crops and improve the yield, so that the crops, fruits and vegetables can be harvested in advance, and the quality of the crops, fruits and vegetables can be improved; and the defects of an existing common agricultural film are effectively overcome.

Description

technical field [0001] The invention belongs to the technical field of agricultural films, and in particular relates to a multi-nuclear rare earth-doped organic complex light conversion agent and a preparation method thereof, a light conversion masterbatch and a preparation method and application thereof. Background technique [0002] The growth of plants is inseparable from the sun. Sunlight is the energy source for plants to carry out photosynthesis. However, different light qualities have different effects on plant growth and development. For example: blue light is good for the growth of plant stems and leaves, and red light is good for improving the taste of fruits and vegetables and quality. The photosynthesis of plants occurs in chloroplasts, and the pigments in chloroplasts absorb blue light at 400-480nm and red-orange light at 600-680nm at the maximum, and ultraviolet light below 380nm and green light at 500-580nm are basically not absorbed but reflected . Therefor...

Claims

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Application Information

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IPC IPC(8): C09K11/06C08J3/22C08J5/18C08L23/06C08L23/08C08K5/00A01G13/02
CPCC09K11/06C08J3/226C08J5/18A01G13/0262C09K2211/182C09K2211/1029C08J2423/06C08J2423/08C08K5/0091
Inventor 蒋绪川周明明刘威杨成祥游淇
Owner UNIV OF JINAN
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