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Boron-sulfur doped carbon quantum dot and preparation method and application thereof

A technology of carbon quantum dots and sulfur doping, applied in the field of fluorescent materials, can solve the problems of expensive instruments, interference of electrophoresis and electrochemical methods, and slow detection speed, and achieve the effects of fast synthesis, stable products, and convenient operation

Active Publication Date: 2022-08-02
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods still have certain limitations. Although high-performance liquid chromatography and mass spectrometry have the advantages of sensitivity and accurate detection results, they require expensive instruments and slow detection speed; electrophoresis and electrochemical methods are easily interfered by other substances. Therefore, it is of great significance to develop a simple, rapid and sensitive ENR detection method.

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  • Boron-sulfur doped carbon quantum dot and preparation method and application thereof
  • Boron-sulfur doped carbon quantum dot and preparation method and application thereof
  • Boron-sulfur doped carbon quantum dot and preparation method and application thereof

Examples

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Embodiment 1

[0044] In this example, a boron-sulfur-doped carbon quantum dot (B, S-CDs) was synthesized and applied to the ratio detection of ENR (enrofloxacin). The schematic diagram of the synthesis process and the ratio detection of ENR is as follows figure 1 shown.

[0045] Wherein the preparation method of B, S-CDs specifically comprises the following steps:

[0046] (1) Weigh 0.0685g triaminophenylboronic acid monohydrate and 0.038g thiourea respectively and dissolve them in 5mL, 0.3M dilute nitric acid solution, and make it completely dissolved after ultrasonication for 5min;

[0047] (2) The above solution was transferred to a 25mL tetrafluoroethylene reactor, placed in a constant temperature oven at 180°C for 4h and then cooled to room temperature naturally;

[0048] (3) The material obtained in step (2) is filtered through a 0.22 μm organic phase filter membrane to remove large particles of impurities, and the B,S-CDs stock solution can be obtained. The B,S-CDs stock solution w...

Embodiment 2

[0067] In this example, a B,S-CDs was synthesized, and the only difference between its preparation method and Example 1 was that the reaction temperature in step (2) of the preparation method of B,S-CDs was 130°C or 200°C.

Embodiment 3

[0069] In this example, a B,S-CDs was synthesized, and the only difference between its preparation method and Example 1 was that the reaction time in step (2) of the preparation method of B,S-CDs was 2h or 6h.

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Abstract

The invention relates to the technical field of fluorescent materials, and particularly discloses boron-sulfur-doped carbon quantum dots as well as a preparation method and application thereof. The boron-sulfur-doped carbon quantum dots are obtained by carrying out hydrothermal reaction on an acidic mixed solution of triaminophenylboronic acid or derivatives thereof and thiourea. The boron-sulfur-doped carbon quantum dots are uniform in particle size and good in fluorescence characteristic, and can be used as a ratio fluorescence sensor for specific detection of antibiotic enrofloxacin.

Description

technical field [0001] The present invention relates to the technical field of fluorescent materials, in particular to boron-sulfur doped carbon quantum dots and a preparation method and application thereof. Background technique [0002] Ratiometric fluorescence sensor is a type of fluorescence sensor. Most ratiometric fluorescence sensors are composed of dual emission peaks. The qualitative and quantitative detection of target analytes can be achieved according to the rise and fall of the fluorescence intensity of the two emission peaks. Compared with unimodal emission fluorescence sensors, ratiometric fluorescence sensors have better detection accuracy due to their self-calibration function. The emergence of ratiometric fluorescence sensors solves the problem that fluorescence sensors with only a single emission wavelength are susceptible to fluctuations in excitation light source, detection environment and local concentration changes of probes. So far, the construction o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65C01B32/15B82Y20/00B82Y40/00G01N21/64
CPCC09K11/65C01B32/15B82Y20/00B82Y40/00G01N21/643C01P2004/04C01P2004/32C01P2004/51C01P2004/64C01P2002/82C01P2002/85Y02A50/30
Inventor 赖家平曾嘉榆梁玉琪孙慧
Owner SOUTH CHINA NORMAL UNIVERSITY