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Carbon-encapsulated carbon-gadolinium quantum dot and preparation method thereof

A carbon gadolinium quantum, carbon coating technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of low preparation efficiency, complicated outsourcing carbon steps, and difficult purification, etc. Achieving uniform size, pollution-free environment and good controllability

Active Publication Date: 2018-04-20
HEFEI UNIV OF TECH
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  • Summary
  • 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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  • Carbon-encapsulated carbon-gadolinium quantum dot and preparation method thereof
  • Carbon-encapsulated carbon-gadolinium quantum dot and preparation method thereof
  • Carbon-encapsulated carbon-gadolinium quantum dot and preparation method thereof

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Embodiment 1

[0046] In this embodiment, a high-purity gadolinium target is used as the metal gadolinium source and toluene is used as the carbon source to prepare carbon-coated carbon gadolinium quantum dots. The preparation method is shown in figure 1 ,Specific steps are as follows:

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

[0048] (2) Select the high-energy pulsed laser with a laser wavelength of 355nm ultraviolet light, a single pulse power of 200mJ, a working frequency of 5Hz, and a focused irradiated gadolinium target for 60 minutes. See the light path figure 1 ; The resulting light gray liquid...

Embodiment 2

[0054] In this embodiment, a high-purity gadolinium target is used as the metal gadolinium source and toluene is used as the carbon source to prepare carbon-coated carbon gadolinium quantum dots. The preparation method is shown in figure 1 ,Specific steps are as follows:

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

[0056] (2) Choose the high-energy pulsed laser with a laser wavelength of 355nm ultraviolet light, a single pulse power of 400mJ, and a working frequency of 5Hz. The gadolinium target is irradiated in a focused mode for 60 minutes. figure 1 ; The resulting light gray liquid in ...

Embodiment 3

[0061] In this embodiment, a high-purity gadolinium target is used as the metal gadolinium source and toluene is used as the carbon source to prepare carbon-coated carbon gadolinium quantum dots. The preparation method is shown in figure 1 ,Specific steps are as follows:

[0062] (1) At room temperature, clean the quartz beaker with ultrasound. After airtight drying, place a round high-purity gadolinium target with a mass of 3 grams on the bottom of the quartz beaker, add 50 mL of toluene, and then cover the quartz plate on the quartz beaker , Use a hose to flush the inside of the quartz beaker with high-purity argon gas for 10 minutes to remove the air in the quartz beaker, and then seal the quartz beaker;

[0063] (2) Select the high-energy pulsed laser with a green wavelength of 532nm, a single pulse power of 200mJ, a working frequency of 5Hz, and a focused irradiation for 60 minutes. figure 1 The light gray liquid in the obtained quartz beaker is the toluene solution of carbon-c...

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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 specifically relates to a carbon-coated carbon gadolinium quantum dot and a preparation method thereof. Background technique [0002] Quantum dots (QDs) have attracted the great research enthusiasm of researchers at home and abroad because of their specific optical and electrical properties, and they 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 unremitting attention and input from many interdisciplinary researchers in biology, physics, chemistry, etc. due to their small particle size, good stability, and strong permeability. At present, quantum dot technology has been introduced to Fluorescent labeling of tumor cells [1-4] , Drug delivery [3-5] And the treatment of malignant tumors [3,6-7] . [0003] Semiconductor quantum dots, metal oxid...

Claims

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Application Information

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Patent Type & Authority Applications(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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