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Preparation method and application of CdHgTe quantum dot solution, CdHgTe quantum dot and bimodal semiconductor nanometer material

A technology of quantum dot solution and nanomaterials, applied in the field of dual-mode semiconductor nanomaterials

Active Publication Date: 2013-06-05
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this single-mode imaging technology still has certain limitations. Therefore, the advantages of various imaging technologies are integrated to develop non-single-mode molecular imaging methods (acoustic, optical, thermal, magnetic, nuclear, etc.) The defects of state imaging technology become the trend of the future development of nanoprobes

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  • Preparation method and application of CdHgTe quantum dot solution, CdHgTe quantum dot and bimodal semiconductor nanometer material
  • Preparation method and application of CdHgTe quantum dot solution, CdHgTe quantum dot and bimodal semiconductor nanometer material
  • Preparation method and application of CdHgTe quantum dot solution, CdHgTe quantum dot and bimodal semiconductor nanometer material

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preparation example Construction

[0032] see figure 1 , the preparation method of the CdHgTe quantum dot solution of an embodiment, comprises the steps:

[0033] Step S110 , dissolving tellurium (Te) in organic phosphine to obtain a tellurium precursor.

[0034] Wherein, the organic phosphine is selected from at least one of trioctylphosphine and tributylphosphine, and the mass ratio of tellurium to organic phosphine is (0.0128-0.128):(0.1-1).

[0035] Preferably, tellurium is tellurium powder.

[0036] Preferably, the tellurium powder is dissolved in the organic phosphine by ultrasonication at 80°C to 100°C. Further, add tellurium (Te) powder into a glass bottle in the glove box, then add organic phosphine, cover the lid, take it out from the glove box and perform ultrasonication.

[0037] Step S120 , adding mercuric acetate to methanol containing potassium hydroxide and dodecanethiol to react for 20-40 minutes to obtain a precipitate, drying and washing the precipitate and dissolving it in chloroform to o...

Embodiment 1

[0080] 1. Preparation of Te precursor: Add 0.0128 Te powder into a 20 mL glass bottle in a glove box, and then add 0.1 g of trioctylphosphine. Cap and remove from the glove box and heat to 100 °C until Te is completely dissolved.

[0081] 2. Hg precursor: At room temperature, add 1 mmol of mercuric acetate dropwise to 3 mmol of dodecanethiol in methanol solution containing potassium hydroxide, react for 20 min, then filter the precipitate, wash once with methanol and ether, and dry in vacuum. Take 0.0245g and add it into 0.5ml chloroform, set aside.

[0082] 3. Zinc diethyldithiocarbamate solution: Add 0.07g zinc diethyldithiocarbamate, 0.8g octadecene and 0.8g trioctylphosphine into a 20mL glass bottle in the glove box, cover Cap and remove from glove box, sonicate until completely dissolved.

[0083] 4. Add 0.0257g of CdO, 8ml of octadecene, 1g of oleylamine and 0.122g of myristyl phosphoric acid into a 100mL three-necked round-bottomed flask, pass N 2 and heated to 300°C...

Embodiment 2

[0090] 1. Preparation of Te precursor: Add 0.064g Te powder into a 20mL glass bottle in the glove box, then add 0.5g tributylphosphine, close the lid and take it out from the glove box, ultrasonic (can be heated to 100°C ) until Te is completely dissolved.

[0091] 2. Hg precursor: At room temperature, add 1 mmol of mercuric acetate dropwise to 3 mmol of dodecanethiol in methanol solution containing potassium hydroxide, react for 20 min, then filter the precipitate, wash once with methanol and ether, and dry in vacuum. Take 0.0245g and add it into 0.5ml chloroform, set aside.

[0092] 3. Zinc diethyldithiocarbamate solution: Add 0.14g zinc diethyldithiocarbamate, 1.6g octadecene and 1.6g tributylphosphine into a 20mL glass bottle in a glove box, and cover Cap and remove from glove box, sonicate until completely dissolved.

[0093] 4. Add 0.0257g of CdO, 8ml of octadecene, 1g of oleylamine and 0.122g of myristyl phosphoric acid into a 100mL three-necked round-bottomed flask, ...

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Abstract

The invention provides a preparation method of CdHgTe quantum dot solution, CdHgTe quantum dot, bimodal semiconductor nanometer material and bimodal semiconductor nanometer material. The preparation method of the CdHgTe quantum dot comprises the following steps: dissolving tellurium in organic phosphine to obtain tellurium precursor; adding mercuric acetate into carbinol containing potassium hydroxide and 1-dodecanethiol to react to obtain sedimentation,and drying and washing the sedimentation and dissolving the sedimentation in chloroform to obtain mercury precursor; under protection of nitrogen, heating mixed cadmium oxide, oleylamine, myristyl phosphoric acid and octadecene to 280-310 DEG C, adding the tellurium precursor, cooling to 240-260 DEG C to react to obtain reaction liquid; and conducting centrifugal separation after mixing the reaction liquid and acetone, dissolving a sedimentation obtained through centrifuging in the chloroform, adding the mercury precursor to react for two hours, adding mixing liquid of normal hexane and the carbinol, centrifuging the mixed liquid and obtaining the CdHgTe quantum dot solution. The preparation method of the CdHgTe quantum dot solution is easy to operate.

Description

technical field [0001] The invention relates to a preparation method of a CdHgTe quantum dot solution, a preparation method of a CdHgTe quantum dot, a preparation method of a bimodal semiconductor nanometer material and a bimodal semiconductor nanometer material. Background technique [0002] Semiconductor nanomaterials (quantum dots) are nanoparticles with a certain crystal structure composed of inorganic semiconductor materials, which have size-dependent electrical and optical properties, and are widely used in biological detection, catalysis, photoelectric energy conversion and other fields. Since it was used for bioluminescent labeling in 1998, quantum dots have been widely used as biological probes in molecular biology, medical diagnostics and other disciplines. Another application field of quantum dots is the research of biomedical in vivo imaging. Imaging in the visible light region (400~650nm) will be affected by endogenous substances in biological tissues (melanin, ...

Claims

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Application Information

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IPC IPC(8): C09K11/89C09K11/02B82Y30/00B82Y40/00
Inventor 蔡林涛高笃阳张鹏飞贾静胡德红盛宗海龚萍
Owner SHENZHEN INST OF ADVANCED TECH
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