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Method for preparing blue-light coumarin film taking 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 changing luminous wavelength, poor uniformity of film formation, and influence of research results, etc., and achieves high light transparency , good film-forming performance and simple preparation method

Inactive Publication Date: 2015-02-18
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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  • Method for preparing blue-light coumarin film taking polymethyl methacrylate as matrix
  • Method for preparing blue-light coumarin film taking polymethyl methacrylate as matrix
  • Method for preparing blue-light coumarin film taking polymethyl methacrylate as matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of 7-diethylamino-4-methylcoumarin absolute ethanol solution

[0029] 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.

[0030] (2) Preparation of polymethyl methacrylate tetrahydrofuran solution

[0031] 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.

[0032] (3) Preparation of 7-diethylamino-4-methylcoumarin / polymethyl methacrylate mixed solution

[0033] The specific process of preparation is: u...

Embodiment 2

[0038] (1) Preparation of 7-diethylamino-4-methylcoumarin tetrahydrofuran solution

[0039] 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.

[0040] (2) Preparation of polymethyl methacrylate tetrahydrofuran solution

[0041] 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.

[0042] (3) Preparation of 7-diethylamino-4-methylcoumarin / polymethyl methacrylate mixed solution

[0043]The specific process of preparation is: use a ...

Embodiment 3

[0048] (1) Preparation of 7-diethylamino-4-methylcoumarin dichloromethane solution

[0049] 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.

[0050] (2) Preparation of polymethyl methacrylate chloroform solution

[0051] 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.

[0052] (3) Preparation of 7-diethylamino-4-methylcoumarin / polymethyl methacrylate mixed solution

[0053] The specific process of preparation is: use a micro-...

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Abstract

The invention discloses a method for preparing a blue-light coumarin film taking polymethyl methacrylate as a matrix. The method comprises the steps: (1) respectively preparing a 7-diethylamino-4-methylcoumarin solution and a polymethyl methacrylate solution; (2) preparing a 7-diethylamino-4-methylcoumarin / polymethyl methacrylate mixed solution; (3) directly dripping or spin-coating the mixed solution obtained in the step (2) on a clean and dry glass sheet or quartz sheet with a measuring tool, and drying at the temperature of 25-80 DEG C in an atmospheric or vacuum environment, so as to obtain a 7-diethylamino-4-methylcoumarin / polymethyl methacrylate film with the concentration of 1.0*10<-5>mol / g to 1.0*10<-4>mol / g. The method is uniform in film forming and little in change to luminescence wavelength and is more beneficial to the research on luminescent properties of materials; the method is simple, is mild in conditions and easy in operation and control, and is applicable to 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. [0002] Background technique [0003] 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. [0004] Coumarin is a general term for compounds whose parent ring str...

Claims

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Application Information

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