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Organic amine surface-modified metal sulfide material, manufacture method and applications thereof

A metal sulfide and surface modification technology, which is applied in the treatment of dyed low-molecular-weight organic compounds, chemical instruments and methods, luminescent materials, etc. High volume effect

Inactive Publication Date: 2014-12-17
BEIJING GIGNANO BIOINTERFACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, at present, the improvement of the luminescence performance of zinc sulfide (ZnS) quantum dots, a wide-bandgap semiconductor material, mainly depends on the doping of metal manganese ions (Mn), and the luminescence effect is not significant.
It is still a technical challenge to improve the luminescent properties of zinc sulfide (ZnS) materials by chemically modifying the surface of metal sulfide materials with organic molecules.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In a 1-liter stirring heating reactor filled with 500ml of ethylenediamine, add 50 grams of zinc sulfide (ZnS) particles with an average diameter of 10 nanometers, heat up to 120°C, and react for 12 hours under reflux stirring conditions. The ethylenediamine supernatant is removed, and the zinc sulfide (ZnS) nanoparticles containing amine functional groups on the surface can be obtained by repeated washing with ordinary water for at least 3 times.

[0029] The above-mentioned zinc sulfide (ZnS) nanoparticles containing amine functional groups on the surface have a core / shell structure, the core is zinc sulfide (ZnS) particles with an average diameter of 10 nanometers, and the shell is a monolayer of ethylenediamine. Bonded by strong chemical bonds.

[0030] Test and analysis results such as fluorescence spectroscopy show that the energy band structure and photoelectric properties of zinc sulfide (ZnS) have undergone significant changes before and after ethylenediamine m...

Embodiment 2

[0032] Add 50 grams of cadmium sulfide (CdS) particles with an average diameter of 10 nanometers in a 2-liter stirred heating reactor filled with 1000 ml of hexamethylenediamine, heat up to 150 ° C, react under stirring conditions for 6 hours, and remove by centrifugation Hexamethylenediamine supernatant, and then repeatedly washed with ordinary water for at least 3 times, can obtain cadmium sulfide (CdS) particles with amine functional groups on the surface.

[0033] The above-mentioned cadmium sulfide (CdS) particles containing amino functional groups on the surface have a core / shell structure, the core is cadmium sulfide (CdS) particles with an average diameter of 10 nanometers, and the shell is a monolayer of hexamethylenediamine. Strong chemical bonding.

[0034]Hexamethylenediamine-modified cadmium sulfide (CdS) nanoparticles exhibit new characteristics of fluorescent semiconductor materials. Fluorescence spectroscopy tests show that the synthesized product has the advan...

Embodiment 3

[0036] Add 500 grams of p-phenylenediamine into a 1-liter stirred heating reactor, raise the temperature to 160 ° C, add 50 grams of lead sulfide (PbS) particles with an average diameter of 200 nanometers, and react for 18 hours under stirring conditions to remove the reaction residue. P-phenylenediamine, and then repeatedly washed with ethanol for at least 5 times by centrifugation, can obtain lead sulfide (PbS) nanoparticles with amine functional groups on the surface.

[0037] The above-mentioned lead sulfide (PbS) nanoparticles containing amino functional groups on the surface have a core / shell structure, the core is lead sulfide (PbS) particles with an average diameter of 200 nm, and the shell is a monolayer of p-phenylenediamine. The shells are held together by strong chemical bonds.

[0038] Lead sulfide (PbS) nano-semiconductor materials modified by p-phenylenediamine can be used in nonlinear optical devices, infrared detectors, light-emitting diodes and solar cells. ...

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Abstract

The invention provides an organic amine surface-modified metal sulfide material, which is composed of a metal sulfide material and an organic amine shell, wherein the organic amine shell is covered on the metal sulfide material. The metal sulfide material and the organic amine shell are bound together through strong chemical bonds, so the chemical and physical properties of the provided material are very stable. Because the metal sulfide material and the organic amine shell are strongly bound together, the shell will not fall off the metal sulfide material even under various chemical reactions or after a plurality of circulation usages. The invention also provides a method for carrying out organic amine surface modification on the metal sulfide material. The modification method comprises the following steps: mixing the metal sulfide material and an organic compound / polymer containing an amino functional group in an organic phase, and then heating the system to carry out chemical synthesis. The invention further provides the applications of the provided metal sulfide material, which is mainly used as a semiconductor luminescent material, a photo-electric and electro-optical conversion material, a photoelectric catalysis material, a photo-thermal material, a bio-labeling material, a coloring material, and the like.

Description

Technical field: [0001] The invention relates to a metal sulfide material modified on the surface of an organic amine and a manufacturing method thereof, which are mainly used in the fields of semiconductor luminescent materials, photoelectric and electro-optical conversion materials, photoelectric catalytic materials, photothermal materials, biomarker materials, coloring pigments and the like. Background technique: [0002] Due to their special optical, electrical, thermal, and magnetic properties, metal sulfide materials have great potential in the fields of luminescence, photoelectricity, photothermal, catalysis, sensing, superconductivity, nonlinear optics, photochemical cells, and solar cells. Wide range of uses. [0003] At present, there are two technical challenges in the application of metal sulfide materials in many fields: [0004] One is to solve the interface problem between metal sulfide materials and organic molecules. The surface of metal sulfide materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/14C09C3/08C09C1/04B01J27/051C09K11/02B01J27/04C09K11/56C09C1/00C09C1/10
Inventor 郭伯良
Owner BEIJING GIGNANO BIOINTERFACE
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