Preparation method of water-soluble fluorescence carbon nanodisk

A carbon nano, water-soluble technology, applied in nanotechnology, chemical instruments and methods, luminescent materials, etc., can solve problems such as high specific surface area, and achieve the effects of good dispersibility, no release of environmental pollutants, dispersibility and non-toxicity

Inactive Publication Date: 2013-05-08
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with zero-dimensional and one-dimensional carbon materials, two-dimensional carbon materials have a planar structure and high specific surface area, and have obvious advantages in material transport and drug loading. However, fluorescent carbon nanomaterials with such special morphology have rarely been reported.

Method used

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  • Preparation method of water-soluble fluorescence carbon nanodisk
  • Preparation method of water-soluble fluorescence carbon nanodisk
  • Preparation method of water-soluble fluorescence carbon nanodisk

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Experimental program
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Effect test

Embodiment

[0020] (1) Weigh 2.0 g of hexabenzocoronex, place it in a quartz boat, put it in a tube furnace under nitrogen protection, and raise the temperature to 1200 within 10 hours o C, kept at the highest temperature for 5 hours, then cooled down to room temperature, and collected 1-1.3g of powder obtained;

[0021] (2) Put the powder obtained in the previous step into a flask, then add 0.5 g of potassium nitrate and 20 ml of concentrated sulfuric acid in sequence, and stir the mixture vigorously,

[0022] (3) After 1 hour, slowly add 3 g of potassium permanganate to the mixture, and continue to stir the mixture;

[0023] (4) After 72 hours, slowly add 75 ml of deionized water to the mixture obtained in the above step, and then add 5 ml of hydrogen peroxide; to remove excess potassium permanganate;

[0024] (5) Place the obtained mixture in a dialysis bag with a molecular weight cut-off range of 3000, and dialyze for 24 hours; obtain a suspension;

[0025] (...

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Abstract

Belonging to the technical field of preparation technologies of nano-functional carbon materials, the invention relates to a preparation method of a water-soluble fluorescence carbon nanodisk. The method mainly consists of the processes of: under the protection of an inert gas, placing unsubstituted hexabenzocoronene powder into a tubular furnace for roasting at a temperature of 1200DEG C for 2-5h, conducting cooling to room temperature, then subjecting the obtained powder to oxidation in an H2SO4 / KNO3 / KMnO4 strong oxidant system, carrying out dialysis to remove the oxidant, and then performing passivation further, thus finally obtaining a water-soluble fluorescence carbon nanodisk with a diameter of 60nm, thickness of 2-3nm, and a fluorescence quantum yield of 3.8%. The product of the invention has special two dimensional appearance, high fluorescence quantum yield, and good dispersibility. And the product in the invention is suitable for the application fields of biomedicine and light-emitting electronic devices, etc.

Description

technical field [0001] The invention relates to a preparation method of a water-soluble fluorescent carbon nano disc, which belongs to the technical field of preparation technology of nano functional carbon materials. Background technique [0002] Fluorescent carbon-based nanomaterials, including carbon nanotubes, carbon dots, and nanodiamonds, have developed rapidly as a new type of fluorescent material. Compared with semiconductor quantum dots, it has the advantages of higher fluorescence quantum yield, stable chemical composition, good biocompatibility and low cytotoxicity. As soon as the appearance of fluorescent carbon-based nanomaterials, it immediately attracted chemists, The great enthusiasm and attention of materials scientists and biologists has initially shown a good momentum in the fields of life sciences such as bioimaging, disease detection and medicine. [0003] After searching the existing technical literature, it is found that the morphology of the curren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02C09K11/65B82Y40/00
Inventor 刘瑞丽杨玉星吴东清
Owner SHANGHAI UNIV
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