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A kind of carbon-coated carbon gadolinium quantum dot and preparation method thereof

A carbon gadolinium quantum and carbon coating technology, which is applied in the field of quantum dot preparation, can solve the problems of difficult purification, low preparation efficiency, complicated outsourcing carbon steps, etc., and achieves the effects of good controllability, uniform size and no environmental pollution.

Active Publication Date: 2020-04-21
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For metallofullerenes, its preparation efficiency is low and its purification is difficult. Although the FeCo quantum dots reported in the literature have better effects than molecular materials for clinical applications, the steps of outsourcing carbon are complicated. Therefore, how to obtain more than metallofullerenes Larger cores similar to single atoms, and how to successfully achieve carbon coating on the outer layer of quantum dots are the problems that nanomaterials must face in the field of biological applications

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  • A kind of carbon-coated carbon gadolinium quantum dot and preparation method thereof
  • A kind of carbon-coated carbon gadolinium quantum dot and preparation method thereof
  • A kind of carbon-coated carbon gadolinium quantum dot and preparation method thereof

Examples

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Embodiment 1

[0046] In this example, carbon-coated carbon gadolinium quantum dots are prepared by using high-purity gadolinium target as the metal gadolinium source and toluene as the carbon source. For the preparation method, see figure 1 ,Specific steps are as follows:

[0047] (1) At room temperature, clean the quartz beaker with ultrasonic waves, and after airtight drying, place a circular high-purity gadolinium target with a mass of 3 grams at the bottom of the quartz beaker, add 50 mL of toluene, and then cover the quartz beaker with a quartz plate , flush the inside of the quartz beaker with high-purity argon gas through a hose for 10 minutes to remove the air in the quartz beaker, and then seal the quartz beaker;

[0048] (2) Select high-energy pulsed laser with ultraviolet light with a laser wavelength of 355nm, single pulse power as 200mJ, and operating frequency as 5Hz, and irradiate the gadolinium target in a focused manner for 60 minutes. The optical path is shown in figure 1...

Embodiment 2

[0054] In this example, carbon-coated carbon gadolinium quantum dots are prepared by using high-purity gadolinium target as the metal gadolinium source and toluene as the carbon source. For the preparation method, see figure 1 ,Specific steps are as follows:

[0055] (1) At room temperature, clean the quartz beaker with ultrasonic waves, and after airtight drying, place a circular high-purity gadolinium target with a mass of 3 grams at the bottom of the quartz beaker, add 50 mL of toluene, and then cover the quartz beaker with a quartz plate , flush the inside of the quartz beaker with high-purity argon gas through a hose for 10 minutes to remove the air in the quartz beaker, and then seal the quartz beaker;

[0056] (2) Choose ultraviolet light with a laser wavelength of 355nm from a high-energy pulsed laser, choose a single pulse power of 400mJ, and a working frequency of 5Hz, and irradiate the gadolinium target in a focused manner for 60 minutes. The optical path is shown i...

Embodiment 3

[0061] In this example, carbon-coated carbon gadolinium quantum dots are prepared by using high-purity gadolinium target as the metal gadolinium source and toluene as the carbon source. For the preparation method, see figure 1 ,Specific steps are as follows:

[0062] (1) At room temperature, clean the quartz beaker with ultrasonic waves, airtightly dry it, place a circular high-purity gadolinium target with a mass of 3 grams at the bottom of the quartz beaker, add 50 mL of toluene, and then cover the quartz beaker with a quartz plate , flush the inside of the quartz beaker with high-purity argon gas through a hose for 10 minutes to remove the air in the quartz beaker, and then seal the quartz beaker;

[0063] (2) Choose green light with a laser wavelength of 532nm from a high-energy pulsed laser, choose a single pulse power of 200mJ, choose a working frequency of 5Hz, and irradiate in a focused manner for 60 minutes. The optical path is shown in figure 1 ; The light gray liqu...

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Abstract

The invention discloses a carbon-encapsulated carbon-gadolinium quantum dot and a preparation method thereof. The carbon-encapsulated carbon-gadolinium quantum dot is a quantum dot with a core-shell structure and takes a carbon-gadolinium quantum dot with a face-centered cubic structure as a core; the core is encapsulated with a carbon film used as a shell; the carbon-encapsulated carbon-gadolinium quantum dot is obtained through laser irradiation. According to the carbon-encapsulated carbon-gadolinium quantum dot and the preparation method thereof, the carbon-gadolinium quantum dot with the face-centered cubic structure is prepared for the first time and carbon encapsulation is successfully carried out on the surface of the carbon-gadolinium quantum dot; laser power and irradiation time adopted in a preparation process have good controllability and the preparation process can be carried out at room temperature; the quantum dots with different grain diameters can be obtained accordingto parameters including laser bombardment time, light power and the like.

Description

technical field [0001] The invention belongs to the technical field of quantum dot preparation, and in particular relates to a carbon-coated carbon gadolinium quantum dot and a preparation method thereof. Background technique [0002] Quantum dots (QDs) have attracted great research enthusiasm from researchers at home and abroad because of their specific optical and electrical properties, and have successfully introduced quantum dot technology into the fields of LED, solar energy, catalysis, and environmental control. In terms of biotechnology, quantum dots have received long-term attention and investment from many interdisciplinary researchers in biology, physics, and chemistry due to their small particle size, good stability, and strong permeability. At present, quantum dot technology has been introduced into the world Fluorescent labeling of tumor cells [1-4] , drug delivery [3-5] and in the treatment of malignant tumors [3,6-7] . [0003] Semiconductor quantum dots, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/02C09K11/77B82Y20/00B82Y30/00B82Y40/00A61K49/06
CPCA61K49/06B82Y20/00B82Y30/00B82Y40/00C09K11/02C09K11/77
Inventor 蒋阳朱志峰张彦张玉刚仲洪海
Owner HEFEI UNIV OF TECH
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