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Quantum dot composition, quantum dot composite material, preparation method and application thereof

A technology of composite materials and quantum dots, which is applied in the field of quantum dot compositions, can solve problems such as poor barrier properties, poor compatibility, and low luminous efficiency of quantum dot composite materials, and achieve the goal of improving luminous efficiency and stability and good chemical stability Effect

Active Publication Date: 2018-10-12
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The main purpose of the present invention is to provide a kind of quantum dot composition, quantum dot composite material, its preparation method and application, to solve the prior art due to poor barrier properties to water vapor and oxygen or poor compatibility with the matrix of dispersed quantum dots The problem of low luminous efficiency of the quantum dot composite material caused by

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  • Quantum dot composition, quantum dot composite material, preparation method and application thereof
  • Quantum dot composition, quantum dot composite material, preparation method and application thereof
  • Quantum dot composition, quantum dot composite material, preparation method and application thereof

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preparation example Construction

[0052] In another typical embodiment of the present invention, a method for preparing a quantum dot composite material is provided. The preparation method includes: a polymer matrix cured product precursor, a crosslinking agent, a curing agent, quantum dots and optional The additives are mixed to obtain a first mixture; the first mixture is cured to obtain a quantum dot composite material; wherein, the precursor of the polymer matrix cured product includes a novolak epoxy-acrylate block copolymer.

[0053] The preparation method of the above-mentioned quantum dot composite material adopts the novolac epoxy-acrylate block copolymer which has the advantages of good barrier properties of epoxy resin to water vapor and oxygen, and good compatibility of acrylate and quantum dots. As the precursor of the cured polymer matrix of quantum dots, the problems of compatibility and barrier properties with quantum dots have been successfully solved through the crosslinking of the crosslinkin...

Embodiment 1

[0074] Using the novolac epoxy-acrylate block copolymer as the precursor of the cured polymer matrix, the precursor of the cured polymer matrix, the crosslinking agent and the curing agent are used to obtain the first mixture; the first mixture is cured to obtain the quantum Point composite materials, the raw materials used for the specific reactants of each step are shown in Table 1, and the dosage ratio and specific reaction conditions between each raw material are shown in Table 2.

Embodiment 2

[0076] Embodiment 2 adopts novolac epoxy-acrylate block copolymer as the polymer matrix cured product precursor, with the polymer matrix cured product precursor, crosslinking agent, curing agent and additives, to obtain the first mixture; the first The mixture was solidified to obtain a quantum dot composite material. The raw materials used for the specific reactants in each step are shown in Table 1, and the dosage ratio and specific reaction conditions of each raw material are shown in Table 2.

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Abstract

The invention provides a quantum dot composition, a quantum dot composite material, a preparation method and application thereof. Wherein, the quantum dot composition includes quantum dots and a precursor of a cured polymer matrix, and the precursor of a cured polymer matrix includes a novolac epoxy-acrylate block copolymer. The above-mentioned quantum dot composition is selected to include novolac epoxy-acrylate block copolymer as the precursor of the cured polymer matrix of dispersed quantum dots, because the novolak epoxy-acrylate block copolymer combines acrylate and quantum dot phase Good capacity and epoxy resin have good barrier properties to oxygen and water vapor, and the epoxy block and acrylate block are linked by chemical bonds and interactions, which have very good chemical stability. This application starts from the composition of the precursor material of the cured polymer matrix, solves the problems of compatibility with quantum dots and isolation of oxygen and water vapor, and improves the luminous efficiency and stability of the quantum dot composite material.

Description

technical field [0001] The invention relates to the field of quantum dot composite materials, in particular to a quantum dot composition, a quantum dot composite material, a preparation method and application thereof. Background technique [0002] Quantum dots, also known as nanocrystals, are nanoparticles composed of II-VI or III-V elements. The particle size of quantum dots is generally between 1 and 10 nm. Since electrons and holes are quantum-confined, the continuous energy band structure becomes a discrete energy level structure with molecular characteristics, and can emit fluorescence after being excited. Based on quantum effects, quantum dots have broad application prospects in the fields of solar cells, light-emitting devices, and optical biomarkers. [0003] Quantum dots have excellent fluorescence characteristics such as wide and continuous distribution of excitation spectrum, narrow and symmetrical emission spectrum, adjustable color, high photochemical stability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F287/00C08F222/14C08F222/20C08K3/22C08K3/30C08K3/26H01L33/50C09K11/02
CPCH01L33/501C09K11/025C08F287/00C08K3/22C08K3/26C08K3/30C08K2003/2241C08K2003/265C08K2003/3045C08F222/104C08F222/102C08F222/103
Inventor 方龙赵飞
Owner NANJING TECH CORP LTD
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