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Application of polydimethylsiloxane, fluorescent film and preparation method thereof

A technology of polydimethylsiloxane and fluorescence, which is applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve the problems of low UV transmittance and low overall spectrum transmittance, and achieve good UV transmittance, Chemical properties are stable and the effect of increasing transmittance

Inactive Publication Date: 2016-09-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The solvent used in the existing frequency conversion film for converting ultraviolet light into visible light is polymethyl methacrylate (PMMA), but its ultraviolet transmittance is low, and the transmittance of the spectrum as a whole is not high, and it needs to be used in the preparation process Toluene, chloroform and other highly toxic organic solvents

Method used

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  • Application of polydimethylsiloxane, fluorescent film and preparation method thereof
  • Application of polydimethylsiloxane, fluorescent film and preparation method thereof
  • Application of polydimethylsiloxane, fluorescent film and preparation method thereof

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preparation example Construction

[0033] The present invention also provides a preparation method of the above-mentioned fluorescent film, comprising: A) mixing fluorescent dye, polydimethylsiloxane and curing agent to obtain a suspended colloidal solution; B) spin-coating the suspended colloidal solution Form a film to obtain a fluorescent film.

[0034] Wherein, the fluorescent dye, polydimethylsiloxane and curing agent are the same as those described above, and will not be repeated here.

[0035] The fluorescent dye is preferably ground first, and then mixed with polydimethylsiloxane and curing agent to obtain a suspension colloidal solution. The purpose of grinding is to grind some unacceptable large particles. It has been proved by experiments that the number of particles visible to the naked eye on the surface of the powder that has not been ground is twice as large as that of the powder that has been ground.

[0036] In the present invention, in order to make the fluorescent dye better mix with polydim...

Embodiment 1

[0046] 1.1 Preparation of modified fused silica glass substrate: Scrub the quartz glass substrate with absolute ethanol; ultrasonically clean the substrate for 30 minutes with an ultrasonic cleaner; wash with ultrapure water for several times, and blow dry with nitrogen. Oxygen plasma surface treatment equipment was used to modify the surface of the fused silica glass substrate to be hydrophilic.

[0047] 1.2 Preparation of sol: Use a precision electronic balance to take an appropriate amount of mixed solutions of Lumogen and PDMS A and B, and the mass ratio of Lumogen and PDMS is 0.05:1.

[0048] A, B solution (the A solution is silicone rubber (silicone elastomer) i.e. polydimethylsiloxane, the B solution is a silicone rubber curing agent (silicone elastomer curing agent) i.e. curing agent) after mixing and stirring to remove air bubbles, Then use a balance scale to take 87mg of Lumogen and put it into 1.65g of PDMS A, B mixed solution, add a magnet to the beaker of the mixe...

Embodiment 2

[0051] 2.1 Use an AG245 precision weighing balance to weigh 227 mg of lumogen powder, and use an agate mortar to fully grind the lumogen powder before weighing. Use an appropriate amount of solvent to magnetically stir with lumogen for about 30 minutes in a sealed container.

[0052] 2.2 Clean the fused silica glass substrate, scrub it with a cotton ball dipped in ethanol, ultrasonicate for 20 minutes, blow dry with nitrogen, put it into GiGabatch for surface modification, and change the surface of the fused silica glass substrate into a hydrophilic structure.

[0053] 2.3 Prepare a total of 1.65g of colloids A and B of PDMS and mix and stir at a mass ratio of 10:1. After the stirring is completed, remove air bubbles in a vacuum.

[0054] 2.4 Mix the lumogen suspension with PDMS to obtain a mixture with a concentration of 10%, seal and stir evenly for 4 to 5 hours, then open and heat with magnetic stirring, and stir for 5 minutes. Do not use vacuum to remove air bubbles, beca...

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Abstract

The invention provides an application of polydimethylsiloxane in preparation of a fluorescent film. Compared with the prior art, in the invention, the polydimethylsiloxane is used as a solvent of fluorescent dye as well as a film forming substrate; with relatively good ultraviolet transmittance, the polydimethylsiloxane can form a single-layer antireflection film structure with fused quartz glass substrate, and the spectrum transmittance is increased; moreover, with stable chemical property, the polydimethylsiloxane is a liquid colloid before use and can be solidified by heating for one hour at 80 DEG C, thus, the polydimethylsiloxane is very safe and stable during the preparation and after the film formation; and meanwhile, the characteristics of the fluorescent film can be maintained for long time.

Description

technical field [0001] The invention belongs to the technical field of ultraviolet enhanced coating, and in particular relates to the use of polydimethylsiloxane, a fluorescent film and a preparation method thereof. Background technique [0002] Silicon-based imaging devices such as charge-coupled devices (CCD) and complementary metal-oxide-semiconductors (CMOS), etc., have a weak response in the ultraviolet band due to the small penetration depth of light waves in the ultraviolet band in polysilicon. Therefore, people are committed to finding ways to improve the ultraviolet response capability of the detector. Although the back-illuminated thinned CCD has a high ultraviolet response, its manufacturing process is complicated and the cost is expensive. Another feasible way is to coat the device with a A frequency conversion film that can convert ultraviolet light into visible light, such as the coating on a silicon-based detector is shown in figure 1 As shown, 4 is a fluores...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K5/01C08K5/3465C08J5/18C09K11/06
CPCC08J5/18C08J2383/04C08K5/01C08K5/3465C09K11/06C09K2211/1011C09K2211/1044C08L83/04
Inventor 郝鹏冯宇祥吴一辉
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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