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Indium phosphide fluorescence quantum pot synthesizing method

A technology of fluorescent quantum dots and synthesis methods, which is applied in the field of wet synthesis of biocompatible InP fluorescent quantum dots and indium phosphide fluorescent quantum dots. Expensive reagents and other issues, to achieve the effect of wide luminescence range, high quantum yield, and simple steps

Inactive Publication Date: 2008-10-29
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of InP quantum dots is currently facing huge challenges: 1. Using organophosphorus silicon compounds and metal organic compounds of indium as raw materials, the synthetic reagents are very expensive and unstable; 2. The quantum yield of the product is low
These will severely limit the application of InP quantum dots

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take 0.1 mmol of indium acetate, 0.3 mmol of tetradecane fatty acid and 7 ml of 1-octadecene into a three-necked bottle A, and mix to obtain an indium precursor; heat the indium precursor to 200°C.

[0016] Get 0.08 mmol of zinc phosphide powder and add it to another three-necked bottle B, and add 2 milliliters of 4 mol / liter sulfuric acid to the three-necked bottle B to make zinc phosphide react with acid to generate phosphine gas.

[0017] Pass the generated phosphine gas into the three-neck bottle A where the indium precursor is placed, and make it react with the indium precursor for 20 minutes to obtain indium phosphide quantum dots.

Embodiment 2

[0019] Take 0.2 mmol of indium acetate, 0.6 mmol of tetradecane fatty acid and 20 ml of 1-octadecene into a three-necked bottle A, and mix to obtain an indium precursor; heat the indium precursor to 240°C.

[0020] Take 0.22 mmoles of zinc phosphide powder in the glove box and add it to another three-necked bottle B, and add 4 ml of 4 mol / liter sulfuric acid to the three-necked bottle B to make zinc phosphide react with acid to generate phosphine gas.

[0021] Pass the generated phosphine gas into the three-neck bottle A where the indium precursor is placed, and make it react with the indium precursor for 30 minutes to obtain indium phosphide quantum dots.

Embodiment 3

[0023] Take 0.5 mmol of indium acetate, 2 mmol of tetradecane fatty acid and 50 ml of 1-octadecene into a three-neck bottle A, mix to obtain an indium precursor; heat the indium precursor to 280°C.

[0024] Take 0.4 mmol aluminum phosphide powder into another three-necked bottle B in the glove box, and add 10 ml of 2 mol / liter hydrochloric acid to the three-necked bottle B to make aluminum phosphide react with acid to generate phosphine gas .

[0025] Pass the generated phosphine gas into the three-neck bottle A where the indium precursor is placed, and make it react with the indium precursor for 10 minutes to obtain indium phosphide quantum dots.

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Abstract

The invention relates to the synthesis method of indium phosphide fluorescent quantum dots, which belongs to the fields of the nano-material preparation technology and the biological analysis and detection technology. The synthesis method is characterized in that the method can synthesize the biocompatible indium phosphide quantum dots by the wet method synthesis using 1-octadecene as the solvent, tetradecanoic fatty acid as the stabilizer, metal phosphide as the phosphor source and metal indium salt as the precursor. The synthesis method comprises the following steps: reacting the metal phosphide with a strong acid to generate phosphine, introducing the phosphine gas into the indium salt precursor solution, and reacting to obtain the indium phosphide quantum dots. The method has the advantages of simple operation, mild condition, low cost, high yield and adjustable emission spectrum of the indium phosphide fluorescent quantum dots, etc.

Description

technical field [0001] The invention relates to a method for synthesizing indium phosphide fluorescent quantum dots, in particular to a method for synthesizing biocompatible InP fluorescent quantum dots by a wet method using metal phosphide as a phosphorus source and metal indium salt as a precursor. The invention belongs to the field of nano material preparation technology and biological analysis detection technology. Background technique [0002] Quantum dots (quantum dots, also known as nanocrystals) are a new type of fluorescent markers such as CdSe and CdTe quantum dots synthesized in recent years. They have unique photoluminescent properties. The main performances are: (1) Narrow emission wavelength range, large Stocks shift, high quantum yield, long fluorescence lifetime, and not easy to chemical and biological degradation, photolysis or bleaching. (2) The fluorescence spectrum of quantum dots red shifts with the increase of its scale, that is to say, the fluorescen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/70
Inventor 任吉存昝峰
Owner SHANGHAI JIAO TONG UNIV
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