A kind of preparation method of blue light coumarin film with polymethyl methacrylate as matrix

A technology of polymethyl methacrylate and methyl coumarin, which is applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve the problems of influence of research results, change of luminescent wavelength, poor film uniformity, etc., and achieve film-forming performance Good, high light transparency, mild condition effect

Inactive Publication Date: 2017-09-01
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are related introductions on the preparation of thin films, the existing thin films generally suffer from poor uniformity of film formation, and the luminous wavelength will be changed to varying degrees after forming, so the research on luminous properties based on such thin films will have an impact on the research results

Method used

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  • A kind of preparation method of blue light coumarin film with polymethyl methacrylate as matrix
  • A kind of preparation method of blue light coumarin film with polymethyl methacrylate as matrix
  • A kind of preparation method of blue light coumarin film with polymethyl methacrylate as matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of 7-diethylamino-4-methylcoumarin absolute ethanol solution

[0025] The specific process of preparation is: add 0.0235 g of 7-diethylamino-4-methylcoumarin into a clean and dry volumetric flask, then add 100 ml of absolute ethanol solvent, and keep stirring until it is completely dissolved to obtain mole Concentration is 1.0x10 -3 mol / L 7-diethylamino-4-methylcoumarin absolute ethanol solution.

[0026] (2) Preparation of polymethyl methacrylate tetrahydrofuran solution

[0027] The specific process of preparation is: add 0.4993g of polymethyl methacrylate into a clean and dry test tube, then add 10 ml of tetrahydrofuran, and keep stirring at 40 degrees Celsius until it is completely dissolved to obtain polymethyl methacrylate with a mass concentration of 5%. methyl acrylate tetrahydrofuran solution.

[0028] (3) Preparation of 7-diethylamino-4-methylcoumarin / polymethyl methacrylate mixed solution

[0029] The specific process of preparation is: us...

Embodiment 2

[0034] (1) Preparation of 7-diethylamino-4-methylcoumarin tetrahydrofuran solution

[0035] The specific process of preparation is: add 0.0574 g of 7-diethylamino-4-methylcoumarin into a clean and dry beaker, then add 250 ml of tetrahydrofuran solvent, and keep stirring until it is completely dissolved to obtain a molar concentration of 1.0 x10 -3 mol / L solution of 7-diethylamino-4-methylcoumarin in tetrahydrofuran.

[0036] (2) Preparation of polymethyl methacrylate tetrahydrofuran solution

[0037] The specific process of preparation is: add 1.003g of polymethyl methacrylate into a clean and dry test tube, then add 20 ml of tetrahydrofuran, and keep stirring at 60 degrees Celsius until it is completely dissolved to obtain polymethyl methacrylate with a mass concentration of 5%. methyl acrylate tetrahydrofuran solution.

[0038] (3) Preparation of 7-diethylamino-4-methylcoumarin / polymethyl methacrylate mixed solution

[0039] The specific process of preparation is: use a ...

Embodiment 3

[0044] (1) Preparation of 7-diethylamino-4-methylcoumarin dichloromethane solution

[0045] The specific process of preparation is: add 0.0229 g of 7-diethylamino-4-methylcoumarin into a clean and dry volumetric flask, then add 100 ml of dichloromethane solvent, and keep stirring until it is completely dissolved to obtain mole Concentration is 1.0x10 -3 mol / L solution of 7-diethylamino-4-methylcoumarin in dichloromethane.

[0046] (2) Preparation of polymethyl methacrylate chloroform solution

[0047] The specific process of preparation is: add 1.5021 g of polymethyl methacrylate into a clean and dry test tube, then add 30 ml of chloroform, and keep stirring at 25 degrees Celsius until it is completely dissolved to obtain polymethyl methacrylate with a mass concentration of 5%. chloroform methyl acrylate solution.

[0048] (3) Preparation of 7-diethylamino-4-methylcoumarin / polymethyl methacrylate mixed solution

[0049] The specific process of preparation is: use a micro-i...

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Abstract

The invention discloses a method for preparing a blue-light coumarin film with polymethyl methacrylate as the matrix. 1) preparing 7-diethylamino-4-methyl coumarin solution and polymethyl methacrylate respectively solution; 2) Prepare a mixed solution of 7-diethylamino-4-methylcoumarin / polymethyl methacrylate; 3) Use a measuring tool to directly drop or spin-coat the mixed solution obtained in step 2) on a clean and dry On a glass sheet or a quartz sheet, and in an atmosphere or a vacuum environment, dry at 25-80 degrees Celsius to obtain 7-diethylamino-4-formazan with a concentration of 1.0x10-5 mol / g~1.0x10-4 mol / g Coumarin / PMMA film. The preparation method has uniform film formation, little change to the luminous wavelength, and is more conducive to the research on the luminous performance of the material. The preparation method is simple, the conditions are mild, easy to operate and control, and is suitable for actual production.

Description

technical field [0001] The invention relates to the research on luminescence technology of coumarin, in particular to a method for preparing a blue-light coumarin film with polymethyl methacrylate as a matrix, and belongs to the field of organic photoelectric technology. Background technique [0002] Organic light-emitting materials have received continuous and focused attention and research in the fields of display and lighting due to their wide source of materials, low price, excellent optoelectronic properties, and outstanding characteristics such as flexibility and large-area preparation. To achieve full color display and white lighting, blue light is essential. Compared with green and red light materials, the research on blue light materials has been in a relatively backward state, which is one of the important factors restricting the commercial application of organic electroluminescence. [0003] Coumarin is a general term for compounds whose parent ring structure is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L33/12C08K5/18C09K11/06
Inventor 黄杰
Owner CHONGQING UNIV OF TECH
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