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Up-conversion luminescence composite flexible transparent resin and preparation method and application thereof

A transparent resin, composite flexible technology, applied in the field of up-conversion luminescent composite flexible transparent resin and its preparation, can solve the problems of luminous efficiency limitation, affecting the application of flexible transparent resin, and sacrifice of light transmittance, so as to facilitate subsequent reprocessing, The effect of short cycle and increased stability

Active Publication Date: 2021-06-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The dispersion of up-conversion luminescent materials in flexible transparent resins faces many challenges. On the one hand, the luminous efficiency of the material itself is limited, and on the other hand, the sacrifice of light transmittance caused by high-concentration dispersion affects the up-conversion luminescent materials. Application of flexible transparent resinization

Method used

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  • Up-conversion luminescence composite flexible transparent resin and preparation method and application thereof
  • Up-conversion luminescence composite flexible transparent resin and preparation method and application thereof
  • Up-conversion luminescence composite flexible transparent resin and preparation method and application thereof

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preparation example Construction

[0020] The invention discloses a preparation method of an up-conversion luminescent composite flexible transparent resin, comprising:

[0021] (1) Adding a ligand linker, a noble metal source and a reducing agent to the dispersion of up-conversion luminescent particles, an in-situ reduction reaction occurs to obtain up-conversion luminescent particles loaded with noble metals on the surface;

[0022] (2) Dispersing the up-conversion luminescent particles loaded with precious metals on the surface in a curing agent solution, adding a transparent resin solution and then heating and curing to obtain the up-conversion luminescent composite flexible transparent resin.

[0023] In some embodiments of the present invention, in step (1), the mass ratio of the up-conversion luminescent particles to the noble metal source is (1269 to 211):1, for example, it can be 211:1, 215:1, 220:1 , 230:1, 250:1, 280:1, 300:1, 400:1, 500:1, 600:1, 700:1, 800:1, 900:1, 1000:1, 1100:1, 1200 :1, 1269:1...

Embodiment 1

[0075] In a 20mL glass bottle, 25mg of NaGdF 4 : Yb, Er particles were dispersed into the aqueous solution, and 2mL of 2.4mM polyvinylpyrrolidone (molecular weight: 55000) was added as a ligand linker (at this time, the mass ratio of up-converting luminescent particles to them was 0.09:1), and then 20uL of 10mM chloroauric acid was added as Gold source, at room temperature, stirred for 15 minutes to fully contact the three, and finally added dilute concentration of 900uL 100mM ascorbic acid as a reducing agent (at this time, the mass ratio of up-conversion luminescent particles to its mass was 2:1), after 30 minutes of slow reduction process, gold nanoparticles It is directly loaded on the surface of the up-conversion luminescent particle, and its size is distributed in the range of 4-20nm.

[0076] After the reaction, the sample powder before and after loading was taken to test the luminous intensity by a steady-state-transient luminescence spectrometer. The detection condit...

Embodiment 2

[0080]The specific reaction process and detection method are the same as in Example 1, except that after pouring part of the mixed flexible transparent resin liquid into a circular mold with a diameter of 3.5 cm, the thickness is 3 mm, and the light transmittance in the visible-near-infrared light region still reaches 90%. .

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Abstract

The invention relates to an up-conversion luminescence composite flexible transparent resin and a preparation method and an application thereof, the preparation method of the up-conversion luminescence composite flexible transparent resin comprises the following steps: adding a ligand coupling agent, a noble metal source and a reducing agent into an up-conversion luminescence particle dispersion liquid, and carrying out an in-situ reduction reaction to obtain up-conversion luminescence particles of which the surfaces are loaded with noble metals; dispersing the up-conversion luminescent particles with the noble metal loaded on the surfaces into a curing agent solution, adding a transparent resin solution, and heating and curing to obtain the up-conversion luminescent composite flexible transparent resin. The invention discloses a high-efficiency up-conversion composite flexible transparent resin material for realizing a homogeneous-phase internal dispersion state by a simple method for the first time, and the material has potential value in the aspect of solid application materials for expanding a near-infrared light region.

Description

technical field [0001] The invention relates to the field of up-conversion luminescent materials, in particular to an up-conversion luminescence composite flexible transparent resin and its preparation method and application. Background technique [0002] Rare earth ion-doped up-conversion luminescent materials follow the typical principle of energy transfer up-conversion luminescence, which can convert long-wavelength near-infrared light into short-wavelength visible light by absorbing one or a few photons. , photonics, and solar optoelectronics have great application potential. However, subject to this reverse luminescence principle, its luminous efficiency is difficult to break through. However, noble metal nanoparticles with special plasmon resonance properties can stimulate and enhance the luminous intensity of up-conversion materials due to the thermal magnetic field generated by the excitation of corresponding wavelengths. At the same time, due to the characteristic l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K9/12C08K3/16C08K3/08
CPCC08K9/12C08K3/16C08K3/08C08K2003/0831C08K2201/011C08L83/04Y02E10/52
Inventor 熊宇杰王瑶龙冉
Owner UNIV OF SCI & TECH OF CHINA
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