A preparation method and application of antifungal 2-methoxy-1,4-naphthoquinone-based fluorescent carbon dots

A fluorescent carbon dot, methoxyl technology, applied in the field of biochemistry, can solve the problems of pathogen resistance development, small toxic and side effects, health hazards, etc., and achieve the effects of good repeatability, small toxic and side effects, and easy access.

Active Publication Date: 2022-02-22
SOUTH CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The preparation method of an antifungal 2-methoxy-1,4-naphthoquinone-based fluorescent carbon dot provided by the present invention is mainly used to solve the problem that currently commonly used commercial fungicides tend to show acute residual toxicity and cause pathogen resistance. Due to the development of medicinal properties, environmental pollution and health hazards, there is an urgent need to develop new antifungal products with good safety performance, good antibacterial effect, and small toxic and side effects

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  • A preparation method and application of antifungal 2-methoxy-1,4-naphthoquinone-based fluorescent carbon dots
  • A preparation method and application of antifungal 2-methoxy-1,4-naphthoquinone-based fluorescent carbon dots
  • A preparation method and application of antifungal 2-methoxy-1,4-naphthoquinone-based fluorescent carbon dots

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Embodiment 1

[0052] A preparation method of antifungal 2-methoxy-1,4-naphthoquinone based fluorescent carbon dots, comprising the following steps:

[0053] S1. Precursor solution preparation: Weigh 500mg of 2-methoxy-1,4-naphthoquinone into a container, then add 250mL dimethyl sulfoxide, stir evenly with a glass rod, put it into an ultrasonic cleaner and sonicate Treat for 10 minutes until completely dissolved;

[0054] S2. High-temperature and high-pressure reaction: transfer the precursor solution obtained in step S1 to a polyvinyl fluoride high-pressure reactor, then put it into a high-temperature oven, react at 120° C. for 6 hours, and naturally cool to room temperature to obtain a crude product;

[0055] S3. Finished product collection: transfer the crude product obtained in step S2 to a beaker, and freeze-dry it in a vacuum freeze dryer. The collected powdery finished product is 2-methoxy-1,4-naphthoquinone-based fluorescent carbon point, name it 1-CDs.

Embodiment 2

[0057] A preparation method of antifungal 2-methoxy-1,4-naphthoquinone based fluorescent carbon dots, comprising the following steps:

[0058] S1. Precursor solution preparation: Weigh 600mg of 2-methoxy-1,4-naphthoquinone into a container, then add 300mL dimethyl sulfoxide, stir evenly with a glass rod, put it into an ultrasonic cleaner and sonicate Treat for 15 minutes until completely dissolved;

[0059] S2. High-temperature and high-pressure reaction: transfer the precursor solution obtained in step S1 to a polyvinyl fluoride high-pressure reactor, then put it into a high-temperature oven, react at 180° C. for 6 hours, and naturally cool to room temperature to obtain a crude product;

[0060] S3. Finished product collection: transfer the crude product obtained in step S2 to a beaker, and freeze-dry it in a vacuum freeze dryer. The collected powdered product is 2-methoxy-1,4-naphthoquinone-based fluorescent Carbon dots, named 2-CDs.

Embodiment 3

[0062] A preparation method of antifungal 2-methoxy-1,4-naphthoquinone based fluorescent carbon dots, comprising the following steps:

[0063] S1. Precursor solution preparation: Weigh 550mg of 2-methoxy-1,4-naphthoquinone into a container, then add 275mL of dimethyl sulfoxide, stir evenly with a glass rod, put it into an ultrasonic cleaner and sonicate Treat for 12 minutes until completely dissolved;

[0064] S2. High-temperature and high-pressure reaction: transfer the precursor solution obtained in step S1 to a polyvinyl fluoride high-pressure reactor, then put it into a high-temperature oven, react at 100° C. for 10 hours, and cool naturally to room temperature to obtain a crude product;

[0065] S3. Finished product collection: transfer the crude product obtained in step S2 to a beaker, and freeze-dry it in a vacuum freeze dryer. The collected powdery finished product is 2-methoxy-1,4-naphthoquinone-based fluorescent carbon point, named it 3-CDs.

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Abstract

The invention relates to the technical field of biochemistry, and discloses a preparation method of antifungal 2-methoxy-1,4-naphthoquinone-based fluorescent carbon dots, which includes precursor solution preparation, high-temperature and high-pressure reaction, natural cooling, and vacuum freeze-drying Wait for the operation steps to finally get the powdered finished product. The preparation method of the antifungal 2-methoxy-1,4-naphthoquinone-based fluorescent carbon dot provided by the present invention has reasonable design, simple process steps, simple and feasible operation, good reproducibility, and no need to use a large amount of toxic solvents in the process , the reaction time is short, the product structure is stable, the purity is high, the safety performance is good, the antibacterial effect is good, the toxic and side effects are small, and it can effectively inhibit the activity of Penicillium digitatum and Penicillium italicum. As a new type of antibacterial agent, it has good promotion and application prospects.

Description

technical field [0001] The invention relates to the technical field of biochemistry, and more specifically, to a preparation method and application of an antifungal 2-methoxy-1,4-naphthoquinone-based fluorescent carbon dot. Background technique [0002] Fluorescent carbon dots (CDs for short) are zero-dimensional carbon nanomaterials with unique photoluminescence properties. With the advantages of good photochemical stability, it has a wide range of applications in bioimaging, photocatalysis, sensing and nanomedicine. Up to now, most of the researches in the field of fluorescent carbon dots are about the fluorescence performance and application of fluorescent carbon dots aqueous solution, and there are few reports about the inhibitory effect of fluorescent carbon dots on fungi. [0003] Fungi are major plant pathogens that cause severe yield and quality losses during the growing season and postharvest storage of a wide variety of fruits. For example, Penicillium digitatum ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/65B82Y20/00B82Y40/00C01B32/15A01N59/00A01P3/00
CPCC09K11/65B82Y20/00B82Y40/00C01B32/15A01N59/00
Inventor 黄日明林雨锜李唯雷炳富陈剑英段学武雷红涛
Owner SOUTH CHINA AGRI UNIV
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