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Crosslinked ligands

A technology of ligands and organic ligands, which is applied in the field of preparing semiconductor luminescent nanoparticles, can solve problems such as the reduction of emission quantum yields, and achieve the effect of improving light emission output

Pending Publication Date: 2020-12-08
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, incorporation of quantum dots into these types of layers leads to a decrease in their emission quantum yield (QY)

Method used

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  • Crosslinked ligands
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0213] A semiconductor luminescent nanoparticle comprising a core,

[0214] one or more shells, and

[0215] at least one organic ligand A, at least one organic ligand B, and at least one organic ligand C attached to the outermost surface of the shell,

[0216] in

[0217] at least one organic ligand A comprises a crosslinkable functional group X,

[0218] at least one organic ligand B comprises a crosslinkable functional group Y, and

[0219] at least one organic ligand C comprises a crosslinkable functional group Z,

[0220] It is characterized in that the groups X, Y and Z are each capable of acting as a crosslinking acceptor and as a crosslinking donor.

Embodiment approach 2

[0221] Embodiment 2. Nanoparticles according to embodiment 1, characterized in that

[0222] Group X can act as a crosslink acceptor for group Y and as a crosslink donor for group Z, or as a crosslink acceptor for group Z and as a crosslinker for group Y donor;

[0223] Group Y can act as a crosslink acceptor for group Z and as a crosslink donor for group X, or as a crosslink acceptor for group X and as a crosslinker for group Z the donor; and

[0224] The group Z can act as a crosslink acceptor for group X and as a crosslink donor for group Y, or as a crosslink acceptor for group Y and as a crosslinker for group X donor.

Embodiment approach 3

[0225]Embodiment 3. Nanoparticles according to embodiment 1 or 2, characterized in that at least one organic ligand A, at least one organic ligand B and at least one organic ligand C are each represented by the following general formula (I)

[0226] U-V-W (I)

[0227] wherein U is the nanoparticle surface attachment group identically or differently each time it occurs in ligands A, B, and C, and V is the same or different each time it occurs in ligands A, B, and C. group, and W correspond to crosslinkable functional groups X, Y and Z respectively.

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Abstract

The present invention relates to a semiconducting light emitting nanoparticle comprising a polymeric layer.

Description

[0001] field of invention [0002] The present invention relates to a semiconducting luminescent nanoparticle comprising a polymeric outer layer and to a method for preparing the semiconducting luminescent nanoparticle. Furthermore, the present invention relates to a composition and formulation comprising at least said semiconducting luminescent nanoparticles, and to the use of said semiconducting luminescent nanoparticles in optical devices. [0003] Background of the invention [0004] Semiconductor luminescent nanoparticles have attracted much attention as color converter materials in optical devices due to their narrow autofluorescence emission. [0005] For example, US 2010 / 068522 A1 presents the synthesis of quantum dots (hereafter QDs) with ligands containing unsaturated groups at the ends. The cross-linking concept described in the patent application requires a catalytic method for the cross-linking of the double bonds. [0006] US 2011 / 281388A describes the cross-lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/88C09K11/70C09K11/62H05B33/14H05B33/20H10K99/00
CPCH05B33/14H05B33/20C09K11/025C09K11/62C09K11/70C09K11/883B82Y20/00B82Y40/00H10K85/60H10K50/115
Inventor I·利伯曼C·马图舍克
Owner MERCK PATENT GMBH