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Stable quantum dot compositions

A technology of quantum dots and compositions, which is applied in nanotechnology, luminescent materials, chemical instruments and methods for materials and surface science, and can solve problems such as quenching QD and interfering with excitonic properties

Inactive Publication Date: 2021-08-17
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Without a carrier polymer, the polar nature of some types of polymers may interfere with the excitonic properties and quench the fluorescence of the QDs

Method used

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  • Stable quantum dot compositions
  • Stable quantum dot compositions
  • Stable quantum dot compositions

Examples

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example

[0175] The following examples are presented to provide those skilled in the art with a complete disclosure and description of how to make and evaluate the compounds, compositions, articles of manufacture, devices and / or methods claimed herein, and are intended to be purely exemplary and not intended to limit the invention public. Efforts have been made to ensure accuracy with respect to numbers (eg, amounts, temperature, etc.), but some errors and deviations should be accounted for. Unless indicated otherwise, parts are parts by weight, temperature is in °C or is at ambient temperature, and pressure is at or near atmospheric. References to composition percentages are in terms of weight % unless otherwise indicated.

[0176] There are many variations and combinations of reaction conditions such as component concentrations, desired solvents, solvent mixtures, temperatures, pressures, and other reaction ranges and conditions that can be used to optimize the product purity and yi...

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Abstract

A nano-composite includes a thermoplastic copolymer includes a polycarbonate copolymer including repeating siloxane units and a plurality of quantum dots. A method of making a polymer film includes forming a masterbatch composition by combining (1) a first thermoplastic copolymer including a polycarbonate copolymer including repeating siloxane units and (2) a plurality of quantum dots; combining the masterbatch composition with a second thermoplastic polymer to form a mixture; and forming the polymer film from the mixture. The polycarbonate copolymer has a siloxane content of from 15 wt% to 65 wt%.

Description

technical field [0001] The present disclosure relates to compositions comprising quantum dots, and in particular to nanocomposites comprising thermoplastic polymers including polycarbonate copolymers comprising repeating siloxane units and quantum dots. Background technique [0002] Semiconducting quantum dots (QDs) exhibit unique optical properties and exhibit high emissivity under UV to blue light excitation. QD composite thin films in which QDs are dispersed in a polymer matrix have been commercialized for display applications as components of backlight units. Whether in pellet or film form, the dispersion of QDs in the polymer matrix and the thermal stability of QDs are properties that affect the light conversion efficiency, lifetime, and cost of QD composites. Academia and industry have made enormous efforts to improve both aspects. Although the encapsulation of QDs, functionalization, and deployment of dispersion media (such as carrier polymers) can improve the dispe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/88C09K11/56C09K11/64C09K11/02C08G77/448C08L83/10
CPCC09K11/025C09K11/565C09K11/883C09K11/641C08K3/10C08L83/04C08L69/00C08G77/448C08L83/10B82Y20/00B82Y40/00B82Y30/00C08J5/18C08J2383/10C08J3/22
Inventor 周兵C·L·海因周昊
Owner SHPP GLOBAL TECH BV