SKU: 46497498059

Water-soluble yellow fluorescence carbon quantum dot powder

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Description

Water-soluble yellow fluorescence carbon quantum dot powderProduct Name Name: Water soluble yellow fluorescence carbon quantum dot dispersion Product Overview carbon quantum dotsCQDs are quasi spherical amorphous carbon nanocrystals composed of sp2 and sp3 cluster carbon structures, surrounded by abundant oxygen containing functional groups such as hydroxyl, carbonyl, carboxyl, etc. Their main constituent elements are C, H, O, and N. The luminescence mechanism of CQDs can be mainly attributed to these three

Product Name

Name:Water-soluble yellow fluorescence carbon quantum dot dispersion

Product Overview

carbon quantum dotsCQDs are quasi spherical amorphous carbon nanocrystals composed of sp2 and sp3 cluster carbon structures, surrounded by abundant oxygen-containing functional groups such as hydroxyl, carbonyl, carboxyl, etc. Their main constituent elements are C, H, O, and N. The luminescence mechanism of CQDs can be mainly attributed to these three types: quantum confinement effect, surface state luminescence, and molecular state luminescence. Carbon quantum dots are composed of C=C and C-C bond cores that are prone to π→π * transitions, as well as various organic molecular functional groups distributed on the surface that are prone to n →π * transitions. The structure and composition of carbon quantum dots result in strong absorption of short wavelength light waves in the ultraviolet range (260-320 nm), accompanied by low-intensity absorption of visible light (400-710 nm).

The preparation methods of carbon quantum dots are divided into top-down method and top-down method. The top-down method is to cut large-sized carbon structural materials through physical or chemical methods, mainly including arc discharge, laser ablation, ultrasonic treatment, and chemical oxidation. The bottom-up approach is to aggregate small molecule precursors into large-sized CQDs through chemical reactions, mainly including water/solvothermal, template method, microwave-assisted, and solid-phase methods.

Technical Parameter

Concentration:0.1 mg/mL:.5 mg/ml: mg/ml

Granularity:2-5 nm

Solvent:Water

Appearance:Yellow dispersion

Product Features

1. Good water solubility: The surface of carbon quantum dots usually contains abundant hydrophilic groups, such as hydroxyl and carboxyl groups, which enable them to be uniformly dispersed in the aqueous phase, facilitating their applications in biological systems and aqueous environments.

2. Low toxicity and good biocompatibility: Carbon quantum dots have low toxicity to organisms and do not cause significant cell damage or immune reactions.

3. High chemical stability: able to maintain stable structure and performance over a wide range of pH values, temperature conditions, and chemical environments.

4. Easy to functionalize: The abundant functional groups on the surface provide active sites for further chemical modification, which can connect various biomolecules, drug molecules, or other functional groups.

5. Excellent optical performance: It has strong fluorescence emission and high fluorescence quantum yield. Its fluorescence emission wavelength can be adjusted by changing the size, surface state, or doping.

Application Fields

1. Biological imaging: Carbon quantum dots have good biocompatibility and low toxicity, and can enter the interior of cells without producing significant cytotoxicity. For example, carbon quantum dots modified with specific antibodies can specifically label antigens on the surface of cancer cells, enabling high-resolution imaging of cancer cells and aiding in early diagnosis of cancer.

2. Biological detection: Due to the influence of metal ions on the fluorescence of carbon quantum dots, they can be used to detect metal ions in the environment or biological samples. For example, when mercury ions are present, the fluorescence of carbon quantum dots will be quenched, thereby achieving sensitive detection of mercury ions. At the same time, it can interact with specific biomolecules (such as proteins, nucleic acids, glucose, etc.) to cause fluorescence changes, which is used for quantitative detection of biomolecules. For example, by binding to aptamers, carbon quantum dots can specifically recognize and detect trace biomarkers in the blood, such as tumor markers.

3. Photocatalytic water splitting for hydrogen production: Composite with semiconductor materials to promote the separation and transfer of photogenerated charges, improving the efficiency of photocatalytic water splitting for hydrogen production. For example, loading carbon quantum dots on the surface of titanium dioxide significantly enhances its photocatalytic activity under visible light and increases hydrogen production.

4. Light emitting devices: Used as a light emitting layer or auxiliary layer in LEDs to improve device performance. For example, carbon quantum dot based LEDs can achieve high brightness and wide color gamut luminescence.

5. Drug carrier: Using its surface functional groups to load drug molecules and achieving controlled drug release through stimulus response (such as pH, temperature, light, etc.). For example, in acidic environments (such as the microenvironment of tumor tissue), carbon quantum dot drug delivery systems release drugs to achieve targeted therapy for tumors.

Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 46497498059

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GhostFingersXP
West Palm Beach, US
★★★★★ 5
Book Reading Wife Approved
Size: Standard (18-Inch), Color: Sage Green
I purchased this for my wife who reads quite a bit and she absolutely loves it. She said it feels soft, is the right size for her, and makes book reading more comfortable for her. I call it a win.
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Reviewed in the United States on April 23, 2026
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A Brown
Fort Morgan, US
★★★★★ 3
Not good quality
Size: Standard (18-Inch), Color: Dark Grey
Comfy, however it’s getting flat an only had it a week
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Reviewed in the United States on April 27, 2026
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Linda F. Del Valle
Birmingham, US
★★★★★ 5
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Size: Standard (18-Inch), Color: Rose Pink
Love love super comfy soft yet firm Great quality good value the material is sturdy
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Reviewed in the United States on June 3, 2026
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RW
Whiting, US
★★★★★ 5
Heaven sent
Size: Jumbo (25-Inch), Color: Dark Grey
My back suddenly decided to show me who's the boss. This reading pillow has been a God send! It is substantial without being too hard, soft enough to be comfortable without being too soft, absolutely no lumps! The outside cover is removable to allow for machine washing and is so soft to the touch. There is a handle on the back that makes it easy to move. This has allowed me to be able to sit upright, much appreciated!
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Reviewed in the United States on May 19, 2026
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Sonja Foster
Massapequa, US
★★★★★ 5
Huge, super soft, cozy pillow!
Size: Jumbo (25-Inch), Color: Sage
This pillow is awesome! As a plus size person who can't sleep laying flat, the size and support level is perfect. This pillow is huge! The quality is very high, the stitching is precise, and the sage green material is soft and cozy. Great value for the price! I highly recommend this reading pillow!
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Reviewed in the United States on May 28, 2026

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