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Application of heteroatom doped multifunctional carbon quantum dot serving as photosensitizer in antimicrobial material

A carbon quantum dot, anti-microbial technology, applied in the chemical, application, biocide and other directions for biological control, to achieve the effect of strong photobleaching resistance, efficient absorption, and wide absorption spectrum

Active Publication Date: 2013-05-22
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the preparation and application of heteroatom-doped carbon quantum dots has just begun, and the research on the application of heteroatom-doped carbon quantum dots in photodynamic antibacterial is still blank.

Method used

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  • Application of heteroatom doped multifunctional carbon quantum dot serving as photosensitizer in antimicrobial material
  • Application of heteroatom doped multifunctional carbon quantum dot serving as photosensitizer in antimicrobial material
  • Application of heteroatom doped multifunctional carbon quantum dot serving as photosensitizer in antimicrobial material

Examples

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Effect test

Embodiment 1

[0036] A preparation method of water-soluble carbon quantum dots doped with N and P diatoms, comprising the following steps:

[0037] Put 10mg of polymer PPV1 solid powder into a beaker, add 40mL of 0.5M hydrochloric acid aqueous solution, and mix well; transfer the well-mixed reaction solution into a hydrothermal reactor, control the reaction temperature at 250°C, and the reaction time for 12 hours. After cooling Separating and purifying to obtain water-soluble carbon quantum dots doped with N and P double atoms. (absorption spectrum such as figure 1 , as shown in transmission electron microscope pictures figure 2 )

[0038] The application of the above-mentioned N, P diatomically doped water-soluble carbon quantum dots as a new type of photosensitizer in antibacterial materials: 200uL with a concentration of 2×10 5 Add cfu / mL Escherichia coli phosphate buffer solution to a sterile 24-well plate, add 10 uL of N and P diatomic doped carbon quantum dot solution at a concent...

Embodiment 2

[0041] A preparation method of S, N diatomically doped water-soluble carbon quantum dots, comprising the following steps:

[0042]Put 10mg of polymer PT1 solid powder into a beaker, add 40mL of 5M aqueous sulfuric acid solution, and mix well; transfer the well-mixed reaction solution into a microwave reactor, control the reaction temperature at 150°C, and the reaction time for 12 hours, separate and purify after cooling , to obtain S, N diatomically doped water-soluble carbon quantum dots. The application of the above-mentioned S, N diatomically doped water-soluble carbon quantum dots as a new type of photosensitizer in antibacterial materials: 200uL with a concentration of 2×10 5 Add cfu / mL Escherichia coli phosphate buffer solution to a sterile 24-well plate, add 10 uL of S and N diatomic doped carbon quantum dot solution with a concentration of 0.5 mg / mL, and incubate with shaking in the dark for 0.5 hours. The wavelength is 400~800nm, and the light intensity is 150mW / cm ...

Embodiment 3

[0045] A preparation method of Se, N diatomically doped water-soluble carbon quantum dots, comprising the following steps:

[0046] Put 5 mg of polymer PT2 solid powder into a beaker, add 40 mL of 1M potassium hydroxide aqueous solution, and mix well; transfer the well-mixed reaction liquid into an ultrasonic reactor, control the reaction temperature at 250 ° C, and the reaction time is 36 hours. After cooling Separating and purifying to obtain Se and N double atom-doped water-soluble carbon quantum dots.

[0047] The application of the above-mentioned Se, N diatomically doped water-soluble carbon quantum dots as a new type of photosensitizer in antibacterial materials: 200uL with a concentration of 2×10 5 Add cfu / mL Staphylococcus aureus phosphate buffer solution to a sterile 24-well plate, add 10uL of Se and N diatomic doped carbon quantum dot solution with a concentration of 0.5mg / mL, and shake and cultivate in the dark for 0.5 hours, with a wavelength of 400-800nm ​​and a...

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Abstract

The invention describes a usage of a heteroatom doped water-soluble carbon quantum dot serving as a photosensitizer in an antimicrobial material. Various types of heteroatom doped water-soluble carbon quantum dots contain one or more of such heteroatoms as N, S, Si, Se, P, As, Ge, Gd, B, Sb and Te, and the absorption spectrum wavelength of the heteroatom doped water-soluble carbon quantum dot is 300-850 nm. As shown in a research, the heteroatom doped water-soluble carbon quantum dots can efficiently generate active oxygen under the irradiation of visible light, so that the heteroatom doped water-soluble carbon quantum dot has a huge development potential in the application field of photodynamic (PDT) sterilization and disinfection.

Description

technical field [0001] The invention relates to the application of a heteroatom-doped multifunctional carbon quantum dot as a photosensitizer in antimicrobial materials. Background technique [0002] In recent years, the problem of environmental pollution has become a major concern of all countries. A large number of harmful bacteria widely exist in nature, air, water, soil, surfaces of various objects, surfaces of human bodies, body cavities that communicate with the outside world, and many daily necessities of human beings. In the world, there are a wide variety and a huge number of harmful bacteria, and people's health is also eroded by various bacteria and viruses anytime and anywhere. At the same time, the abuse of a large number of antibiotics has led to the continuous emergence of a large number of drug-resistant bacteria. How to effectively reduce and prevent the impact and harm of various pathogenic microorganisms in the human living environment on human life, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/26A01N59/02A01N59/00A01N59/22A01P1/00A01P3/00
Inventor 葛介超汪鹏飞蓝敏焕刘卫敏张洪艳
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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