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A kind of adhesive blue fluorescent coating and its preparation method and application

A blue fluorescence and adhesive technology, applied in the field of fluorescent materials and plant applications, can solve the problems of difficult degradation of light-converting agricultural film, complicated construction and operation, and inability to popularize and use, to avoid ultraviolet stress, improve photosynthetic activity, cost low effect

Active Publication Date: 2021-05-25
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the method of converting invalid or low-efficiency light into blue light and red light is mainly by setting up light-converting agricultural film or lighting equipment. The above-mentioned scheme requires a large amount of capital investment in the early stage, and the construction operation is relatively complicated.
In addition, the light-converting agricultural film has the problems of refractory degradation and environmental pollution, and cannot be widely used, especially the above-mentioned method cannot be applied to cultivation environments such as orchards.

Method used

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  • A kind of adhesive blue fluorescent coating and its preparation method and application
  • A kind of adhesive blue fluorescent coating and its preparation method and application
  • A kind of adhesive blue fluorescent coating and its preparation method and application

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preparation example Construction

[0047] The invention provides a method for preparing an adhesive blue fluorescent coating, comprising the following steps:

[0048] S1 uses citric acid and polyethyleneimine to prepare blue fluorescent carbon quantum dots;

[0049] S2 dissolves the blue fluorescent carbon quantum dots prepared in S1 in water to obtain a blue fluorescent carbon quantum dot solution;

[0050] S3 co-depositing the blue fluorescent carbon quantum dot solution and the polyphenol solution on the surface of the substrate to obtain an adhesive blue fluorescent coating, the polyphenol solution being a polyphenol compound solution induced by amine polymerization.

[0051] Among the above-mentioned preparation methods, preferably:

[0052] The preparation method of the blue fluorescent carbon quantum dots in the step S1 is as follows: fully stir and mix citric acid and polyethyleneimine in water, heat and evaporate the obtained solution at a constant temperature to obtain a colloid, then add water to co...

Embodiment 1

[0063] This embodiment discloses a method for preparing an adhesive blue fluorescent coating, comprising the following steps:

[0064] (1) Weigh 1g of citric acid and 5g of polyethyleneimine with an average molecular weight of 400. Polyethyleneimine is a multi-chain molecular polymer, mix them in a beaker, stir and dissolve them in 10mL of water;

[0065] (2) Heating the solution at 180° C. for 30 minutes to obtain a colloid;

[0066] (3) Add 1mL of water and continue heating until the water evaporates;

[0067] (4) Repeat step (3) ten times to obtain orange colloid;

[0068] (5) Wash the colloid with ethanol, then centrifuge and freeze-dry to obtain nitrogen-doped blue fluorescent carbon quantum dots;

[0069] (6) Prepare 40 mg / mL blue fluorescent carbon quantum dot solution and 5 mg / mL tannic acid solution and mix in equal proportions, and then coat on the surface of the substrate to obtain an adhesive blue fluorescent coating.

Embodiment 2

[0071] This embodiment discloses a method for preparing an adhesive blue fluorescent coating, comprising the following steps:

[0072] (1) Weigh 1g of citric acid and 100g of polyethyleneimine with an average molecular weight of 20,000. Polyethyleneimine is a mixture of linear molecular polymers and multi-chain molecular polymers, mix them in a beaker, stir and dissolve them in 100mL of water ;

[0073] (2) Heating the solution at 180° C. for 1 h to obtain a colloid;

[0074] (3) Add 10mL of water and continue heating until the water evaporates;

[0075] (4) Repeat step (3) fifteen times to obtain orange colloid;

[0076] (5) Wash the colloid with ethanol, then centrifuge and freeze-dry to obtain nitrogen-doped blue fluorescent carbon quantum dots;

[0077] (6) Configure 10mg / mL blue fluorescent carbon quantum dot solution and 2mg / mL catechin solution, and spray the blue fluorescent carbon quantum dot solution and catechin solution on the surface of the substrate synchronou...

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Abstract

The invention discloses an adhesive blue fluorescent coating and its preparation method and application. The preparation method comprises the following steps: S1 prepares blue fluorescent carbon quantum dots by using citric acid and polyethyleneimine; S2 prepares the blue fluorescent carbon quantum dots prepared by S1 Fluorescent carbon quantum dots are dissolved in water to obtain a blue fluorescent carbon quantum dot solution; S3 co-deposits the blue fluorescent carbon quantum dot solution and polyphenol solution on the substrate surface to obtain an adhesive blue fluorescent coating, and the polyphenol The solution is a solution of polyphenol compounds induced by amine polymerization. The surface of the coating of the present invention has small ripples, strong fluorescent performance, good thermal stability, good adhesion and strong anti-scouring performance, and can continuously maintain its fluorescent performance; spraying it on the surface of plants can effectively improve the performance of plants. Its photosynthetic activity can effectively promote plant growth, easy to use, green and pollution-free, low in cost, strong in popularity, effectively absorb ultraviolet rays, and prevent plants from receiving ultraviolet stress, thereby improving the stress resistance of plants.

Description

technical field [0001] The invention relates to the technical field of fluorescent materials and plant applications, in particular to an adhesive blue fluorescent coating and a preparation method and application thereof. Background technique [0002] Plant yield is closely related to light use efficiency. At present, the utilization efficiency of sunlight by plants is less than 1%. This is mainly because only blue light and red light can be efficiently utilized by plant photosynthesis in sunlight, while plants are sensitive to ultraviolet light and green light. Light utilization efficiency is very low. In addition, ultraviolet light not only cannot be directly used by plants, but also easily causes light stress and damages plants. Therefore, converting these ineffective or low-efficiency light into blue light and red light required for plant photosynthesis not only helps to improve light utilization efficiency, but also protects plants from UV stress. [0003] In the prior...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/22C09D5/32C09K11/65A01N59/00B82Y20/00B82Y40/00
CPCA01N59/00B82Y20/00B82Y40/00C09D5/22C09D5/32C09K11/65
Inventor 郝玉金张帅刘彦恺由春香
Owner SHANDONG AGRICULTURAL UNIVERSITY
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