Quantum dot and quantum dot dispersion system

A dispersed system and quantum dot technology, applied in the field of quantum dots, can solve problems affecting the stability and defects of quantum dots

Active Publication Date: 2018-09-14
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the high humidity and high temperature of the external environment will adversely affect the stability of the quantum dots, so it is necessary to improve the quantum dots in the prior art

Method used

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  • Quantum dot and quantum dot dispersion system
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  • Quantum dot and quantum dot dispersion system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] CdSe quantum dots 1 are dissolved in toluene, and then triethoxy (pentafluorophenyl) silane is added for reaction to obtain a sample 1 coated with a pentafluorophenyl modified polysiloxane layer. The TEM photo is as follows figure 1 shown. exist figure 1 In the figure, the dark part 12 is the quantum dot, and the light part 11 is the coating. From figure 1 It can be seen that the quantum dots are not agglomerated and have good dispersion.

Embodiment 2

[0049] CdSe quantum dots 2 were dissolved in toluene, and then benzyltriethoxysilane was added to react to obtain sample 2 coated with benzyl-modified polysiloxane layer. The TEM photo is as follows figure 2 shown. exist figure 2 In the figure, the dark part 22 is the quantum dot, and the light part 21 is the coating. From figure 2 It can be seen that the quantum dots are not agglomerated and have good dispersion.

Embodiment 3

[0051] Dissolve CdZnSe quantum dots 3 in toluene, then add chloromethyltriethoxysilane to react to obtain sample 3 coated with chloromethyl-modified polysiloxane layer, the TEM photo is as follows image 3 shown. exist image 3 In the figure, the dark part 32 is the quantum dot, and the light part 31 is the coating. From image 3 It can be seen that the quantum dots are not agglomerated and have good dispersion.

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Abstract

The invention relates to a quantum dot and a quantum dot dispersion system. A coating is arranged on the surface of the quantum dot and comprises polysiloxane, and one or multiple hydrophobic groups are connected on polysiloxane. A polysilica layer containing hydrophobic groups is formed on the surface of the quantum dot, so that stability of the quantum dot is improved, the problem of luminous efficiency reduction caused by low thermostability of the quantum dot when being applied in high-temperature environment is solved, a super-hydrophobic function of the quantum dot is realized, and the quantum dot is less prone to agglomeration and high in dispersity.

Description

[0001] Cross References to Related Applications [0002] This application claims the priority of Chinese patent application "201710664227.X" filed on August 4, 2017, entitled "Nanocrystal Composite and Preparation Method Thereof", the entire content of which is incorporated herein by reference. technical field [0003] The invention belongs to the technical field of quantum dots, in particular to a quantum dot and a quantum dot dispersion system. Background technique [0004] Due to their unique and excellent photoelectric properties, quantum dots have shown extremely broad application prospects in the fields of lighting displays, biomarkers, solar cells, and photocatalysis. [0005] In the prior art, the high humidity and high temperature of the external environment will adversely affect the stability of the quantum dots, so it is necessary to improve the quantum dots in the prior art. Contents of the invention [0006] In view of the above technical problems, the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/88B82Y20/00B82Y40/00
CPCC09K11/025C09K11/88B82Y20/00B82Y40/00
Inventor 李鑫王允军宋研君
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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