Prepartion method of ternary system quantum dots containing Cd*Zn*Se

A ternary system and quantum dot technology, applied in chemical instruments and methods, non-metal elements, nanostructure manufacturing, etc., can solve the problems of high price, high temperature, high toxicity, etc., and achieve easy large-scale production and difficult production The effect of the accident

Inactive Publication Date: 2009-11-25
中国医药城泰州纳米生命医学研究院
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Problems solved by technology

However, this method uses diethylzinc, TOPO and ODA (octadecylamine), which are expensive, highly toxic and inflammable and explosive in the air, as...

Method used

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  • Prepartion method of ternary system quantum dots containing Cd*Zn*Se
  • Prepartion method of ternary system quantum dots containing Cd*Zn*Se

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Embodiment 1

[0014] according to figure 1 , step one; prepare Cd precursor solution: 0.125gCd(MA) 2 (cadmium myristate), 10mL toluene and 0.50mL oleic acid were added to a three-necked flask, heated to 80°C to make Cd(MA) 2 (cadmium myristate) was dissolved in toluene and oleic acid, and then cooled to 60°C for 20 minutes to form a transparent solution; step 2, preparing Zn precursor solution: 0.046gZn(MA) 2 (zinc myristate), 10mL toluene and 0.50mL oleic acid were added to a three-necked flask, heated to 80°C to make Zn(MA) 2 (Zinc myristate) was dissolved in toluene and oleic acid, and then cooled to 60°C for 20 minutes to form a transparent solution; step 3, preparation of Se precursor solution: 0.048g Se powder (0.6mmol) was dissolved in 0.963g trioctyl In base phosphine, vortex at room temperature until completely dissolved, dilute with 40mL toluene, and store in a sealed container; Step 4, Cd x Zn 1-xPreparation of Se ternary system quantum dots: add the above Cd precursor soluti...

Embodiment 2

[0016] according to figure 2 , step 1, prepare Cd precursor solution: 0.106gCd(MA) 2 (cadmium myristate), 10mL toluene and 0.50mL oleic acid were added to a three-necked flask, heated to 80°C to make Cd(MA) 2 (cadmium myristate) was dissolved in toluene and oleic acid, and then cooled to 60 ° C for 20 minutes to form a transparent solution; step 2, the preparation of Zn precursor solution: 0.068gZn (MA) 2 (zinc myristate), 10mL toluene and 0.50mL oleic acid were added to a three-necked flask, heated to 80°C to make Zn(MA) 2 (Zinc myristate) was dissolved in toluene and oleic acid, then cooled to 60°C and kept for 20 minutes to form a transparent solution; Step 3, prepare TOP-Se solution: 0.048g Se powder (0.6mmol) was dissolved in 0.963g trioctyl Phosphine, use a vortex shaker until it is completely dissolved, dilute with 40mL, and store in a sealed seal; Step 4, Cd x Zn 1-x Preparation of Se ternary system quantum dots: add the above Cd precursor solution, Zn precursor s...

Embodiment 3

[0018] Step 1, prepare Cd precursor solution: 0.125gCd(MA) 2 (cadmium myristate), 10mL octadecene (ODE) and 0.50mL oleic acid were added to a three-necked flask, heated to 80°C to make Cd(MA) 2 (cadmium myristate) was dissolved in octadecene (ODE) and oleic acid, and then cooled to 60 ° C for 20 minutes to form a transparent solution; step 2, prepare Zn precursor solution: 0.046gZn (MA) 2 (zinc myristate), 10mL octadecene (ODE) and 0.50mL oleic acid were added to a three-necked flask, heated to 80°C to make Zn(MA) 2 (Zinc myristate) was dissolved in octadecene (ODE) and oleic acid, then cooled to 60°C and kept for 20 minutes to form a transparent solution; Step 3, prepare TOP-Se solution: 0.048g Se powder (0.6mmol) was dissolved in In 0.963g trioctylphosphine, use a vortex shaker until completely dissolved, dilute with 40mL octadecene (ODE), and keep in a sealed container; Step 4, Cd x Zn 1-x Preparation of Se ternary system quantum dots: add the above Cd precursor solution...

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Abstract

The invention discloses a prepartion method of ternary system quantum dots containing Cd[x]Zn[1-x]Se, first, adding Cd source into organic coating agent and so-solvent, heating to dissolve the Cd source into the organic coating agent and so-solvent, and preserving heat to form transparent Cd precursor solution; second, adding Zn source into the organic coating agent and so-solvent, heating to dissolve the Zn source into the organic coating agent and so-solvent, and preserving heat to form transparent Zn precursor solution; third, adding Se powder into trioctylphosphine, ultrasonic dispersion at room temperature to dissolve the Se powder into the trioctylphosphine, and then diluting by the so-solvent to get Se precursor solution, then sealing and storing the Se precursor solution; fourth, mixing the Cd precursor solution, Zn precursor solution and Se precursor solution and the organic coating agent in properticn, using inert gas to remove air, sealing and reacting under protection of inert gas, cooling to room temperature to obtain the ternary system quantum dots containing Cd[x]Zn[1-x]Se.

Description

technical field [0001] The present invention relates to a kind of Cd x Zn 1-x The invention discloses a method for preparing Se ternary quantum dots, belonging to the fields of nanotechnology, surface chemistry, bioanalytical chemistry and the like. Background technique [0002] Quantum Dots (Quantum Dots, QDs) usually refer to semiconductor nanocrystals with a particle size smaller than or close to the exciton Bohr radius. Due to quantum confinement, size effects and surface effects, quantum dots have many unique fluorescent properties such as: emission wavelength Compared with organic fluorescent dyes, it also has the characteristics of strong fluorescence intensity, high sensitivity and slow photobleaching rate. Therefore, fluorescent quantum dots are used in bioluminescence labeling, biological Sensors, light-emitting diodes (LEDs) and other fields have broad application prospects. By adjusting the particle size of CdSe quantum dots, its emission wavelength can cover ...

Claims

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Application Information

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IPC IPC(8): C01B19/00C09K11/88B82B3/00
Inventor 黄金麟祝文明肖海蓉
Owner 中国医药城泰州纳米生命医学研究院
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