SKU: 50017221194

Water-soluble red fluorescence carbon quantum dot powder XF346

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Description

Water-soluble red fluorescence carbon quantum dot powder XF346Product Name Name: Water soluble red fluorescence carbon quantum dot powder Product Overview carbon quantum dots CQDs 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:

Product Name

 

Name:Water-soluble red fluorescence carbon quantum dot powder


Product Overview

 carbon quantum dots CQDs 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:0.05 mg/mL:.1 mg/ml:.5 mg/ml

Granularity:2-5 nm

Solvent:Water

Appearance:Fuchsia 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: 50017221194

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4.2 ★★★★★
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Candy
Bozeman, US
★★★★★ 5
Excellent product, great value. ❤️
Size: 9 inches - Plush Gumby
My dog absolutely LOVES her gummy. Carries it around like her babydoll!!! Well made, excellent value, has held up to a tough cheers. She doesn't chew it but loves on it. Love ❤️
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Reviewed in the United States on June 9, 2026
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Verified Purchase
AmoreBella
Pawtucket, US
★★★★★ 5
Gumby is a hit!
Size: 9 inches - Plush Gumby, Size: 9 inches - Plush Gumby
The dogs LOVE their Gumby toys! Do I expect them to last long? Not with this dog. In fact, the dog pictured began chewing Gumby's arm off shortly after this photo and had to be redirected, given a chew, and the Amazon box to shred before trying Gumby again. However, if your dog is like my Boston and more gentle on soft toys then this toy will last a long time. Her Gumby remains fully intact and loved. So, if you're buying this, just know your dog's style of play and how they treat soft toys, then purchase with reasonable expectations. I knew my wild man would destroy this, he destroys the tough made stuffies, but he has fun doing it and you can't beat the $3 price. Overall it's a cute toy at a good price. It's fun to play fetch with it in the house, but I wouldn't tug at it. Playing tug could rip it.
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Reviewed in the United States on June 21, 2024
I
Verified Purchase
ilovedaisies
Fort Morgan, US
★★★★★ 5
GREAT for small dogs!
Size: 6 inches - Plush Gumby
My Pekingese, Yuki, has tiny and shallow jaws. So, it’s tough to find toys she can hold, let alone squeak. But “Gumby” was a surprise, and a fast favorite. The fur is pleasantly smooth, vs. dense. It seems to help. The front/back are somewhat flattened. That seems to help, too. The squeaker is strategically placed…. Thus, she can easily mouth the neck/head area, regardless of the arm placement to easily squeak away…. And what fun to twirl. I’ll grab an arm, and spin her in circles. It’s wonderfully stitched. Nary a worry about an arm coming off. A truly quality toy…. Purchase for your wee one with confidence!
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Reviewed in the United States on May 14, 2026
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Verified Purchase
Ash
Lake Worth, US
★★★★★ 4
After a good scrub, the dogs love them!
Size: 9 inches - Latex Gumby, Size: 9 inches - Latex Gumby
These gumby toys are flexible rubber, and exactly what you'd expect for the price. I ordered three to replace two that had been gifts well loved by my dogs. I read reviews mentioning smell, but wasn't really prepared for it when the package arrived. They all arrived zip tied to a paperboard backing. They all smelled like a fine fragrance designed for robots - like burning motor oil with floral undertones - and the zip ties were stained a sickly green wherever they touched Gumby. Initially, my dogs wanted nothing to do with them, even after a good scrub. I left them to air out in the shed for a few days and then ran them through the dishwasher (without cleanser!) and they were good to go. My dogs love these toys. I know they're not going to last long! I know the arms will get yanked or chewed off first, and then the corner of Gumby's head will go missing. Eventually, his head will be ripped into tiny pieces and strewn about my living room. I know that, sooner or later (and probably sooner!), Gumby will be little more than a torso with weird square legs. And that's okay, because that means my dogs enjoyed the toy. People complaining about a $7 flexible rubber toy not being appropriate for heavy chewers don't understand what dogs need, or what dog toys are for. Part of the satisfaction that chewing brings for dogs is also shredding. Dogs destroy stuff. Some more than others. It's what they do. No toy will last forever if it's used! But I have five dogs, including bully breeds and a Saint Bernard, plus two occasional visitors, and these toys have lasted longer than expected (even if their arms are off in minutes!) The dogs in the pictures are 90 and 120 pounds, modeling both a well loved older Gumby and a brand new one.
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Reviewed in the United States on January 27, 2021
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Derick
Birmingham, US
★★★★★ 5
Perfect for my terrier, he loves it.
Size: 6 inches - Plush Pokey
Has to be one of my pups favorite toys. He loves having it thrown for him. It is small enough that my toddler can play with the dog. Very durable, it gets played with every day for hours at a time.
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Reviewed in the United States on May 10, 2026

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