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Boron-doped carbon quantum dot containing transition metal as well as preparation method and application of boron-doped carbon quantum dot

A transition metal, carbon quantum dot technology, applied in chemical instruments and methods, nano-carbon, material excitation analysis, etc., can solve problems such as unreliable detection results and signal interference

Pending Publication Date: 2022-07-29
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, whether it is a colorimetric method or a fluorescent analysis method, a single signal is easily interfered by the substrate, resulting in unreliable detection results. Therefore, the inventor has developed a dual-mode glucose detection method based on colorimetry and fluorescence, which can not only be compared Or analyze the color depth of the substrate to determine the concentration of the target substance, and also identify the detected substance through the change of the fluorescent signal

Method used

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  • Boron-doped carbon quantum dot containing transition metal as well as preparation method and application of boron-doped carbon quantum dot
  • Boron-doped carbon quantum dot containing transition metal as well as preparation method and application of boron-doped carbon quantum dot
  • Boron-doped carbon quantum dot containing transition metal as well as preparation method and application of boron-doped carbon quantum dot

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Effect test

Embodiment 1

[0028] (1) Add 25 mg of porphyrin tetraphenylboronic acid and 20 mg of ferrous chloride into a 200 mL beaker, then add 100 mL of absolute ethanol, 0.5 mL of 68% nitric acid aqueous solution, and 0.25 mL of ethylenediamine, and then ultrasonicate for 10 min to make The tetraphenylboronic acid porphyrin was completely dissolved.

[0029] (2) The mixed solution obtained in step (1) was transferred to a 200mL reaction kettle, and the reaction kettle was put into a temperature-controlled oven, reacted at a set temperature, and naturally cooled to room temperature after the reaction was completed. The set reaction temperature was 160°C, and the set reaction time was 8h.

[0030] (3) Centrifuge the reaction solution, discard the solids precipitated at the bottom, dialyze the supernatant in an aqueous solution with a dialysis bag with a molecular weight cut-off of 1000 Da for 72 hours, and then place it at -60 °C for lyophilization for 48 hours to finally obtain the target carbon quan...

Embodiment 2

[0032] (1) Add 46 mg of B-1,10-phenanthroline-5-ylboronic acid and 10 mg of ferrous chloride into a 50 mL beaker, then add 25 mL of DMF, 0.1 mL of 68% nitric acid aqueous solution, 0.05 mL of ethyl acetate Diamine, followed by sonication for 20 min to completely dissolve the starting material.

[0033] (2) The mixed solution obtained in step (1) was transferred to a 50mL reaction kettle, the reaction kettle was put into a temperature-programmed oven, reacted at a set temperature, and naturally cooled to room temperature after the reaction was completed. The set reaction temperature was 160°C, and the set reaction time was 8h.

[0034] (3) Centrifuge the reaction solution, discard the solid precipitated at the bottom, dialyze the supernatant in an aqueous solution with a dialysis bag with a molecular weight cut-off of 500 Da for 72 hours, and then place it at -60 °C for lyophilization for 48 hours to finally obtain the target carbon quantum dots .

Embodiment 3

[0036] (1) Add 41 mg of quinoline-5-boronic acid and 10 mg of ferrous chloride into a 50 mL beaker, then add 25 mL of DMF, 0.1 mL of a 68% nitric acid aqueous solution, and 0.05 mL of ethylenediamine, followed by ultrasonication for 20 min to make the raw materials completely dissolved.

[0037] (2) The mixed solution obtained in step (1) was transferred to a 50mL reaction kettle, the reaction kettle was put into a temperature-programmed oven, reacted at a set temperature, and naturally cooled to room temperature after the reaction was completed. The set reaction temperature was 160°C, and the set reaction time was 8h.

[0038] (3) Centrifuge the reaction solution, discard the solid precipitated at the bottom, dialyze the supernatant in an aqueous solution with a dialysis bag with a molecular weight cut-off of 500 Da for 72 hours, and then place it at -60 °C for lyophilization for 48 hours to finally obtain the target carbon quantum dots .

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Abstract

The invention relates to a boron-doped carbon quantum dot containing transition metal as well as a preparation method and application of the boron-doped carbon quantum dot. The preparation method comprises the following steps: mixing a nitrogen heterocyclic compound containing boric acid groups, iron salt and other transition metal compounds with a solvent, adding nitric acid and ethylenediamine, heating to 120-160 DEG C, reacting for 4-8 hours, carrying out solid-liquid separation, and freeze-drying the filtrate to finally obtain the carbon quantum dots capable of detecting the content of hydrogen peroxide and glucose in a sample through a colorimetric and fluorescent bimodal method. The method disclosed by the invention has a series of advantages of simple synthesis process, few types and quantity of required raw materials, low preparation cost, outstanding product performance and the like, and has a relatively good application prospect in the field of analysis and detection.

Description

technical field [0001] The invention relates to the technical field of carbon quantum dot materials and analysis and detection, in particular to a transition metal-containing boron-doped carbon quantum dot and a preparation method and application thereof. Background technique [0002] Carbon quantum dots (CDs) can generally be defined as spherical carbon nanoparticles with a size of less than 10 nm and excellent fluorescence properties. CDs are widely used in optoelectronic devices, photocatalysis, biomarkers, cell imaging, cancer therapy, ionic and Small molecule detection and other fields. [0003] Glucose, as the main energy source for cellular metabolism, plays a vital role in the natural growth of cells. With the improvement of living standards, excessive intake of high-sugar foods has led to a rapid increase in the incidence of diabetes worldwide. There are currently more than 117 million people living with diabetes worldwide, and this number is expected to reach 30...

Claims

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Application Information

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IPC IPC(8): C09K11/65C01B32/15B82Y20/00B82Y40/00G01N21/64
CPCC09K11/65C01B32/15B82Y20/00B82Y40/00G01N21/643G01N2021/6432C01P2004/04C01P2004/32C01P2004/64
Inventor 吴风收张锐琳罗珍妮商婧刘根炎罗晓刚
Owner WUHAN INSTITUTE OF TECHNOLOGY
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