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A kind of preparation method of water-soluble red sulfur quantum dots

A quantum dot, water-soluble technology, applied in the field of nanomaterials, can solve the problems such as no water-soluble red light sulfur quantum dots reported, and achieve the effect of good application prospect, simple and fast preparation process, and suitable for mass preparation.

Active Publication Date: 2022-04-22
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, there have been no reports of water-soluble red sulfur quantum dots

Method used

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  • A kind of preparation method of water-soluble red sulfur quantum dots
  • A kind of preparation method of water-soluble red sulfur quantum dots
  • A kind of preparation method of water-soluble red sulfur quantum dots

Examples

Experimental program
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Effect test

Embodiment 1

[0014] (1) Add 4 grams of sodium hydroxide to 50 grams of deionized water and stir until dissolved, then add 2.8 grams of propynyl alcohol and 1.4 grams of sublimed sulfur powder and continue stirring for 10 minutes to obtain a mixed solution.

[0015] (2) Pour the mixed solution obtained in step (1) into the reaction bottle, remove the air in the reaction bottle and introduce oxygen, and stir the mixed solution at 90°C for 4 hours under an oxygen atmosphere to obtain a water-soluble red light sulfur quantum dots.

Embodiment 2

[0017] (1) Add 2 grams of sodium hydroxide to 40 grams of deionized water and stir until dissolved, then add 1 gram of propynyl alcohol and 0.6 gram of sublimed sulfur powder and continue stirring for 10 minutes to obtain a mixed solution.

[0018] (2) Pour the mixed solution obtained in step (1) into a reaction bottle, remove the air in the reaction bottle and introduce oxygen, and stir the mixed solution at 60°C for 5 hours under an oxygen atmosphere to obtain a water-soluble red light sulfur quantum dots.

Embodiment 3

[0020] (1) Add 1.5 grams of sodium hydroxide to 45 grams of deionized water and stir until dissolved, then add 2.1 grams of propynyl alcohol and 1.5 grams of sublimed sulfur powder and continue stirring for 10 minutes to obtain a mixed solution.

[0021] (2) Pour the mixed solution obtained in step (1) into a reaction bottle, remove the air in the reaction bottle and introduce oxygen, and stir the mixed solution at 99°C for 2 hours under an oxygen atmosphere to obtain a water-soluble red light sulfur quantum dots.

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Abstract

The invention discloses a preparation method of water-soluble red sulfur quantum dots. Add 1 part by weight of sodium hydroxide into 10-30 parts by weight of deionized water and stir until dissolved, then add 0.5-2 parts by weight of propynyl alcohol and 0.3-1 part by weight of sublimed sulfur powder and continue stirring for 10 minutes to obtain Mixed solution: Pour the obtained mixed solution into a reaction bottle, remove the air in the reaction bottle and introduce oxygen, and stir the mixed solution at 60~99°C for 2~5 hours under an oxygen atmosphere to obtain a water-soluble red light sulfur quantum dots. The water-soluble red light sulfur quantum dots prepared by the invention have the characteristics of narrow size distribution, good water solubility, strong red fluorescence, etc., and the preparation process is simple and fast, and the preparation cost is low. The water-soluble red sulfur quantum dots have good application prospects in bioimaging and biodetection.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of water-soluble red light sulfur quantum dots. Background technique [0002] Due to their small size and excellent optical properties, fluorescent quantum dots have shown good application prospects in the fields of bioimaging, optical devices, and biosensing. Among them, fluorescent quantum dot materials without metal elements are more suitable for application in the fields of bioimaging and biodetection due to their good biocompatibility. On the other hand, although there have been many reports on fluorescent quantum dots without metal elements, such as fluorescent silicon quantum dots and fluorescent carbon quantum dots, there are few reports on fluorescent sulfur quantum dots. At the same time, the fluorescence emitted by most fluorescent quantum dots without metal elements is blue or green fluorescence, and the organism itself ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B17/02C09K11/56B82Y20/00B82Y40/00
CPCC01B17/0248C09K11/56B82Y20/00B82Y40/00
Inventor 周立高鹏翔
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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