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Orange-light carbon quantum dots as well as preparation and application thereof

A technology of orange light carbon quantum and reaction products, which is applied in the field of fluorescent light-emitting materials, can solve the problems of short emission wavelength and complex preparation method of carbon quantum dots, and achieve good water solubility and good application prospects

Active Publication Date: 2021-11-02
THE SECOND HOSPITAL OF SHANXI MEDICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, the preparation method of the above-mentioned carbon quantum dots for Golgi target imaging is complicated, and its emission wavelength is at a short wavelength

Method used

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  • Orange-light carbon quantum dots as well as preparation and application thereof
  • Orange-light carbon quantum dots as well as preparation and application thereof
  • Orange-light carbon quantum dots as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Weigh 1.2167g (10mmol) of L-cysteine ​​and 0.058g (0.2mmol) of neutral red, add them to a mixed solvent consisting of 30mL of ethanol and 10mL of ultrapure water, stir at room temperature until completely dissolved, and obtain a precursor solution .

[0043] The precursor solution was placed in a 100 mL stainless steel autoclave lined with tetrafluoroethylene, sealed, and subjected to solvothermal reaction in an oven at 140° C. for 8 h.

[0044] After the reaction was completed, it was cooled to room temperature, and the reaction solution was taken out and filtered through a 0.22 μm microporous membrane.

[0045] The filtrate was put into a 1000Da dialysis bag, placed in ultrapure water for dialysis for 48 hours, and the solution remaining in the dialysis bag was collected to obtain the L-carbon quantum dot solution.

[0046]Transfer the L-carbon quantum dot solution into a drying bottle, freeze-dry in a vacuum freeze dryer, and prepare the L-carbon quantum dot solid p...

Embodiment 2

[0048] D-cysteine ​​was used instead of L-cysteine, and the others were the same as in Example 1 to prepare D-carbon quantum dot solid powder.

Embodiment 3

[0050] DL-cysteine ​​with a purity of 97% was used instead of L-cysteine, and the others were the same as in Example 1 to prepare DL-carbon quantum dot solid powder.

[0051] The morphology of the L / D-carbon quantum dot solid powder was observed under a transmission electron microscope. according to figure 1 It can be seen from the morphology that the L- and D- carbon quantum dots are spherical, with good dispersion, and the particle size ranges are 1.0-4.0nm and 0.5-3.0nm respectively, and no agglomeration occurs.

[0052] according to figure 2 It can be seen from the infrared spectrum of L / D-carbon quantum dots that there are abundant functional groups on the surface of L- and D-carbon quantum dots, 3421cm -1 The absorption band at is attributed to the stretching vibration of O-H / N-H, 2546cm -1 The weaker absorption bands are the characteristic absorption bands of S-H, 1620 and 1395 cm -1 corresponding to COO - The asymmetric and symmetric stretching vibrations of the...

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Abstract

The invention relates to orange-light carbon quantum dots, which are carbon quantum dot solid powder obtained by dissolving neutral red as a carbon source and cysteine as a targeting source in water or an ethanol water solution, performing a solvothermal reaction for 6-14 hours at 120-160 DEG C under a closed condition, and purifying a reaction product. The carbon quantum dots prepared by the invention not only have good water solubility, but also have excellent fluorescence characteristics, and can emit orange light. When the carbon quantum dots are applied to cell imaging, target imaging of a Golgi body can be realized. The carbon quantum dots have an application prospect in the field of Golgi body target imaging.

Description

technical field [0001] The invention belongs to the technical field of fluorescent luminescent materials, and relates to a carbon quantum dot, in particular to a carbon quantum dot material with orange light emission. The orange light-emitting carbon quantum dots of the present invention can be applied in targeted imaging of Golgi bodies. Background technique [0002] Organelles are micro-organs scattered in the cytoplasm with certain shapes and functions. The Golgi apparatus is an organelle that synthesizes biomacromolecules such as proteins, lipids, and carbohydrates for extracellular secretion or reprocessing by other intracellular organelles. When cells become cancerous, they over-secrete proteins and proteases, increasing the demand for protein secretion, which in turn affects the size and capacity of the Golgi apparatus, resulting in enlargement of the Golgi apparatus. At the same time, abnormalities of the Golgi apparatus can induce many diseases, such as Alzheimer'...

Claims

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Application Information

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IPC IPC(8): C09K11/65G01N21/64B82Y20/00B82Y30/00
CPCC09K11/65G01N21/6428G01N21/6458B82Y20/00B82Y30/00G01N2021/6439Y02B20/00
Inventor 卫迎迎杜晶磊于世平陈琳刘旭光杨永珍张利
Owner THE SECOND HOSPITAL OF SHANXI MEDICAL UNIV
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