Organic-inorganic composite up-conversion photoluminescence film and preparation method thereof

An inorganic composite and light conversion technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of inability to accurately control the composition, growth direction, unsuitable for large-area preparation of thin films, and expensive equipment, so as to improve the conversion efficiency of light spots, The effect of low production cost and fast polymerization rate

Active Publication Date: 2015-10-28
FUZHOU UNIV
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Problems solved by technology

For example, pulse laser ablation, electrochemical deposition, etc. can control the composition and deposition amount of the film to a certain extent and the processing temperature is low, but the equipment is expensive and the cost is high, and it is not suitab...

Method used

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  • Organic-inorganic composite up-conversion photoluminescence film and preparation method thereof
  • Organic-inorganic composite up-conversion photoluminescence film and preparation method thereof
  • Organic-inorganic composite up-conversion photoluminescence film and preparation method thereof

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preparation example Construction

[0039] The present invention also provides a method for preparing an organic-inorganic composite up-conversion photoluminescent film, which is characterized in that the method comprises the following steps:

[0040] S10: Weigh a certain amount of UA, stir evenly, add a certain amount of MMA, stir magnetically for 10 minutes, mix evenly, and make an organic polymer precursor;

[0041] S20: ultrasonically disperse the inorganic up-conversion photoluminescence crystalline particles in the uniformly mixed organic polymer precursor solution, add a photoinitiator, and stir evenly to form a transparent photoluminescence coating solution;

[0042] S30: Uniformly coat the transparent photoluminescent coating solution in the mold or container, the optional coating methods are: spin coating method, dipping and pulling method, spray coating method, roller coating method, meniscus coating method or die coating method.

[0043] S40: Transfer the mold or container coated with the photolumin...

Embodiment 1

[0049] 1) Weigh 4 g of polyurethane acrylate (UA), stir evenly, add 4 g of methyl methacrylate (MMA) and stir magnetically for 10 minutes, and mix evenly to prepare an organic polymer precursor;

[0050] 2) Weigh 0.16 g of polyethylene glycol-modified NaYF 4 :Yb 3+ , Er 3+ Phosphor powder, ultrasonically dispersed in the well-mixed organic polymer precursor solution, added 0.1 g photoinitiator (TPO), stirred evenly, to form a transparent photoluminescent coating solution;

[0051] 3) Apply the transparent photoluminescent coating solution evenly on the polytetrafluoroethylene mold to form a thin layer with a thickness of 0.4 mm;

[0052] 4) Transfer the polytetrafluoroethylene mold coated with the photoluminescence coating solution to the UV curing box, and irradiate it with a UV lamp for 10 minutes, and then the cured organic-inorganic composite up-conversion photoluminescence film Peel from the Teflon mold.

[0053] figure 2 It is a polarized light microscopic image of...

Embodiment 2

[0058] 1) Weigh 4 g of polyurethane acrylate (UA), stir evenly, add 4 g of methyl methacrylate (MMA) and stir magnetically for 10 minutes, and mix evenly to prepare an organic polymer precursor;

[0059] 2) Weigh 0.32 g of polyethylene glycol-modified NaYF 4 :Yb 3+ , Er 3+ Phosphor powder, ultrasonically dispersed in the well-mixed organic polymer precursor solution, added 0.1 g photoinitiator (TPO), stirred evenly, to form a transparent photoluminescent coating solution;

[0060] 3) Apply the transparent photoluminescent coating solution evenly on the polytetrafluoroethylene mold to form a thin layer with a thickness of 0.4 mm;

[0061] 4) Transfer the polytetrafluoroethylene mold coated with the photoluminescence coating solution to the UV curing box, and irradiate it with a UV lamp for 10 minutes, and then the cured organic-inorganic composite up-conversion photoluminescence film Peel from the Teflon mold.

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Abstract

The invention discloses an organic-inorganic composite up-conversion photoluminescence film and a preparation method thereof, and belongs to the technical field of optical functional composite film. According to the preparation method, ultraviolet light polymerization is adopted, urethane acrylate (UA) modified with methyl methacrylate (MMA) is taken as an organic polymer monomer, polymerization is realized under initiation of a photoinitiator, and at the same time inorganic up-conversion photoluminescence crystalline particles are dispersed in an obtained polymer uniformly so as to obtain the organic-inorganic composite up-conversion photoluminescence film. The organic-inorganic composite up-conversion photoluminescence film possesses flexibility, self-sustaining performance, up-conversion photoluminescence performance, certain transparency, and a promising application prospect. The preparation method is simple; heat treatment is not needed; film preparation efficiency is high; preparation conditions are easy to control; and the preparation method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of photofunctional composite films, and in particular relates to an organic-inorganic composite up-conversion photoluminescence film and a preparation method thereof. Background technique [0002] Due to the advantages of both traditional composite materials and modern nano-film materials, composite thin films have become a research hotspot in the field of functional materials. Among them, the introduction of inorganic light-emitting materials, such as rare earth complexes and semiconductors, on the surface or inside of the composite film will endow the film with good optical properties, thereby obtaining a new type of functional film material - organic-inorganic composite photoluminescent film. Compared with inorganic light-emitting films, this type of film has the advantages of low post-treatment temperature, high film transparency, high luminous efficiency and stability, and easy processing. It has broad...

Claims

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Application Information

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IPC IPC(8): C08L51/08C08K9/04C08K3/16C08J5/18C08F283/00C08F220/14C08F2/48C09K11/85C09K11/02
Inventor 李凌云孙李珍于岩潘坚福徐晓富
Owner FUZHOU UNIV
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