scholarly journals Synthesis of Fluorescent Carbon Dots by Gastrointestinal Fluid Treatment of Mongolia Har Gabur

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Tegexibaiyin Wang ◽  
Wen Zhang ◽  
Xiaofeng Zhang ◽  
Xilin Qiqige ◽  
Wuhan Qimuge ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Quantum Yields ◽  
Pig Manure ◽  
Tem Analysis ◽  
Gastrointestinal Fluid ◽  
Wide Ph Range ◽  
Biological Labeling ◽  
Average Size ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Har Gabur is the carbide obtained from pig manure by burning. The fluorescent carbon dots (CDs) of Har Gabur were successfully synthesized through simulating the digestion process of human gastrointestinal tract. Transmission Electron Microscope (TEM) analysis showed that the average size of the prepared Har Gabur CDs was 4 nm, with good solubility in water and strong fluorescence under UV irradiation. The X-ray and Raman results showed that the Har Gabur CDs were mainly composed of oxygen “O” and carbon “C” elements, in the forms of “C=O” and “C-O.” The bond energy results showed that the nitrogen “N” atom presented as “C-N” form, which indicated that Har Gabur CDs also contain “N.” In photobleaching assay, Har Gabur CDs showed excellent light stability compared with ordinary organic dye, fluorescein, and Rhodamine B. The fluorescence intensity of Har Gabur CDs was fairly stable within a wide pH range of 3–10. When L-lysine and L-cysteine were applied for the passivation stage, the relative quantum yields were improved by 1.53 and 3.68 times, respectively. Finally, the fluorescence properties of Har Gabur CDs were tested in cells and zebrafish, illustrating that Har Gabur CD has potential in the application of biological labeling and imaging.

Fluorescent carbon dots from beer for breast cancer cell imaging and drug delivery

2015 ◽  
Vol 7 (20) ◽  
pp. 8911-8917 ◽  
Author(s):  
Ziyi Wang ◽  
Han Liao ◽  
Hao Wu ◽  
Beibei Wang ◽  
Haidong Zhao ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Drug Delivery ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Tem Analysis ◽  
Average Size ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

We report the finding of the presence of fluorescent carbon dots in commercial beer and TEM analysis reveals that the beer carbon dots (BCDs) have an average size of 2.5 nm.

A facile large-scale microwave synthesis of highly fluorescent carbon dots from benzenediol isomers

2014 ◽  
Vol 2 (25) ◽  
pp. 5028-5035 ◽  
Author(s):  
Jun Wang ◽  
Changming Cheng ◽  
Ying Huang ◽  
Baozhan Zheng ◽  
Hongyan Yuan ◽  
...  
Keyword(s):  
Microwave Synthesis ◽  
Carbon Dots ◽  
Large Scale ◽  
Quantum Yields ◽  
Microwave Method ◽  
High Quantum ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Three different carbon dots with high quantum yields were prepared via microwave method within 2 min. The hydroquinone-derived CDs could easily penetrate cells in 30 min.

One-Step Fabrication of Fluorescent Carbon Dots for Selective and Sensitive Detection of Cr (VI) in Living Cells

NANO ◽  
2016 ◽  
Vol 11 (01) ◽  
pp. 1650012 ◽  
Author(s):  
Dan Zhang ◽  
Yingnan Jiang ◽  
Chuanxi Wang
Keyword(s):  
Carbon Dots ◽  
High Selectivity ◽  
Inner Filter Effect ◽  
Living Cells ◽  
Great Promise ◽  
Label Free ◽  
One Step ◽  
Average Size ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

A one-step facile method of synthesizing fluorescent carbon dots (CDs) has been demonstrated, whereby fluorescent CDs are produced through hydrothermal treatment of glucose in the presence of H3BO3 with a fluorescence quantum yield of 14.5%. It is found that spherical CDs have an average size of 3.7[Formula: see text]nm as well as good monodispersion in aqueous solution. The added Cr (VI) selectively leads to the inner filter effect (IFE)-based fluorescence quenching of the CDs. Such fluorescence responses can be used for well quantifying Cr (VI) in the range of 0.05–200[Formula: see text][Formula: see text]M. Significantly, the CDs possess negligible cytotoxicity, excellent biocompatibility and high selectivity. All these features are favorable for label-free monitoring of Cr (VI) in complex biological samples. It was then successfully applied for the fluorescence imaging of intracellular Cr (VI). As an efficient chemosensor, the CDs hold great promise in broadening their applications in biological systems.

Nitrogen-doped carbon dots from Hutai-8 grape skin and their application in Hg2+ detection

2020 ◽  
Vol 16 ◽  
Author(s):  
Pan Zhang ◽  
Shun-Sheng Zhao ◽  
JiaJia Wang ◽  
Xiang Rong Liu
Keyword(s):  
Heavy Metal ◽  
Carbon Source ◽  
Fluorescence Quenching ◽  
Hydrothermal Method ◽  
Water Samples ◽  
Carbon Dots ◽  
Mercury Ions ◽  
Grape Skin ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Background: In recent years, environmental pollution and heavy metal pollution caused by rapid urbanization and industrialization have become increasingly serious. Among them, mercury (II) ion (Hg2+) is one of the highly toxic heavy metal ions, and its pollution comes from various natural resources and human activities. Therefore, people attach great importance to the development of analytical methods for effective analysis and sensitive detection of Hg2+ . Objective: Using grape skin as a green and environmental friendly carbon source, to synthesize fluorescent carbon dots, and try to apply them to the detect the concentration of Hg2+ in water. Method: Using "Hutai No. 8" grape skin as carbon source, fluorescent carbon dots were synthesized by one-step hydrothermal method. Structure and fluorescent properties of the carbon dots were tested using TEM, XPS, XRD and other characterization instruments, and their utilization on detection of mercury ions in the actual water samples was explored. Results: The CDs had a particle size of about 4.8 nm and a spherical shape. There are N-H, C-N, C=O and other functional groups on the surface. It was found that Hg2+ has obvious fluorescence quenching effect on CDs, and thus CDs fluorescence quenching method to detect the concentration Hg2+ was established, and the detection limit is 3.7 μM, which could be applied to test the concentration of Hg2+ in water samples. Conclusion: Using grape skin as carbon source, fluorescent carbon dots were successfully synthesized by hydrothermal method. Carbon dots were used to detect mercury ions in water, and a method for detecting mercury ions in actual water samples was established.

Anti-counterfeiting application of fluorescent carbon dots derived from wasted coffee grounds

Optik ◽  
2021 ◽  
pp. 166449
Author(s):  
Woo Tae Hong ◽  
Jin Young Park ◽  
Jong Won Chung ◽  
Hyun Kyoung Yang ◽  
Jae-Yong Je
Keyword(s):  
Carbon Dots ◽  
Coffee Grounds ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Carbon dots derived from Fusobacterium nucleatum for intracellular determination of Fe3+ and bioimaging both in vitro and in vivo

2021 ◽  
Author(s):  
Lijuan Liu ◽  
Shengting Zhang ◽  
Xiaodan Zheng ◽  
Hongmei Li ◽  
Qi Chen ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fusobacterium Nucleatum ◽  
Living Cells ◽  
First Time ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Fusobacterium nucleatum has been employed for the first time to synthesize fluorescent carbon dots which could be applied for the determination of Fe3+ ions in living cells and bioimaging in vitro and in vivo with excellent biocompatibility.

scholarly journals Green fluorescent carbon dots as targeting probes for LED‐dependent bacterial killing

Nano Select ◽  
2021 ◽  
Author(s):  
Jennifer Samphire ◽  
Yuiko Takebayashi ◽  
Stephen A. Hill ◽  
Nicholas Hill ◽  
Kate J. Heesom ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Bacterial Killing ◽  
Green Fluorescent ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

From coconut petiole residues to fluorescent carbon dots via a green hydrothermal method for Fe3+ detection

Cellulose ◽  
2021 ◽  
Vol 28 (3) ◽  
pp. 1647-1661
Author(s):  
Shiyu Gao ◽  
Xi Wang ◽  
Nan Xu ◽  
Hailan Lian ◽  
Li Xu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Carbon Dots ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon
Sign in / Sign up

Export Citation Format

Share Document