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Rapid large-scale preparation method of water-solubility fluorescent carbon quantum dots

A carbon quantum dot, water-soluble technology, which is applied in the field of preparation of luminescent materials, can solve the problems of high preparation conditions and cannot be prepared in large quantities, and achieves the effects of wide application prospect, low cytotoxicity and simple operation.

Active Publication Date: 2017-11-24
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention mainly aims at the shortcomings of current carbon quantum dots, which require relatively high preparation conditions and cannot be prepared in large quantities, and develops a rapid and large-scale method for preparing water-soluble fluorescent carbon quantum dots with good thermal stability, green and non-toxic.

Method used

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  • Rapid large-scale preparation method of water-solubility fluorescent carbon quantum dots
  • Rapid large-scale preparation method of water-solubility fluorescent carbon quantum dots
  • Rapid large-scale preparation method of water-solubility fluorescent carbon quantum dots

Examples

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Effect test

Embodiment 1

[0020] (1) Heat 5 mL of peanut oil to 250 o C;

[0021] (2) Weigh 5 g of glucose powder as a carbon source and add it to the above hot oil, and stir for 5 minutes;

[0022] (3) After cooling, add 10 mL of deionized water and stir slowly. After the carbon quantum dots in the above step (2) are completely dispersed, let stand to separate and remove the upper oil phase to obtain water-dispersed water-soluble carbon quantum dots.

Embodiment 2

[0024] (1) Heat 20 mL of methyl silicone oil to 250 o C;

[0025] (2) Weigh 15g of sucrose powder as a carbon source and add it to the above hot oil, and stir for 5 minutes;

[0026] (3) After cooling, add 30 mL of deionized water and stir slowly. After the carbon quantum dots in the above step (2) are completely dispersed, let stand to separate and remove the upper oil phase to obtain water-dispersed water-soluble carbon quantum dots.

Embodiment 3

[0028] (1) Heat 200 mL of corn oil to 250 o C;

[0029] (2) Weigh 100g of glucose powder as a carbon source and add it to the above hot oil, and stir for 10 minutes;

[0030] (3) After cooling, add 250 mL of deionized water and stir slowly. After the carbon quantum dots in the above step (2) are completely dispersed, let stand to separate and remove the upper oil phase to obtain water-dispersed water-soluble carbon quantum dots.

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Abstract

The invention belongs to the technical field of fluorescent nanometer materials, and specifically discloses a rapid large-scale preparation method of water-solubility fluorescent carbon quantum dots. The method comprises the following steps: taking polyhydroxy saccharides such as glucose as a carbon source, and adding hot oil for mechanical stirring to obtain a brown pasty substance; after cooling, adding deionized water for stirring and dissolving, separating an oil phase, and recycling a water phase to obtain the water-solubility carbon quantum dots. According to the method disclosed by the invention, the polyhydroxy saccharides are taken as a carbon source, and oil with high boiling point is adopted as a heating medium and can be recycled, so that the method is low in preparation cost, simple in operation and high in preparation speed, a high pressure condition is not needed, the requirement for equipment is relatively low, and the prepared carbon quantum dots are of excellent water solubility, so that the method can be used for preparing the water-solubility carbon quantum dots in large scale.

Description

technical field [0001] The invention belongs to the technical field of preparation of luminescent materials, and in particular relates to a method for rapidly and mass-preparing water-soluble fluorescent carbon quantum dots. Background technique [0002] Carbon is one of the basic elements that widely exist on the earth, and it is also the basic element that constitutes life. Because carbon materials are non-toxic or low-toxic, and nanomaterials often exhibit properties that macroscopic materials do not have, carbon nanomaterials have always been a hot field in chemistry, physics and materials science. As a new type of carbon nanomaterial, carbon quantum dots (carbondots, CDs) have good optical properties and chemical inertness, such as adjustable emission wavelength, resistance to photobleaching, good biocompatibility, non-toxic, and environmental friendliness. The discovery has received extensive attention, and has been widely used in chemical sensing, biosensing, bioimag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15B82Y30/00C09K11/65
CPCB82Y30/00C01P2004/04C01P2004/64C09K11/65
Inventor 郑保战肖丹郭勇杜娟刘小霞冀红云
Owner SICHUAN UNIV
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