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.

Large-Scale Ultrasonic Fabrication of White Fluorescent Carbon Dots

2016 ◽  
Vol 55 (18) ◽  
pp. 5335-5341 ◽  
Author(s):  
Hui Dang ◽  
Li-Kai Huang ◽  
Yan Zhang ◽  
Cai-Feng Wang ◽  
Su Chen
Keyword(s):  
Carbon Dots ◽  
Large Scale ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Preparation of N-doped Fluorescent Carbon Dots with High Quantum Yield for In-vitro Bioimaging

2017 ◽  
Vol 38 (12) ◽  
pp. 1567-1574
Author(s):  
姜 杰 JIANG Jie ◽  
李士浩 LI Shi-hao ◽  
严一楠 YAN Yi-nan ◽  
何丹农 HE Dan-nong
Keyword(s):  
Quantum Yield ◽  
Carbon Dots ◽  
High Quantum Yield ◽  
High Quantum ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

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.

Full-colour carbon dots: from energy-efficient synthesis to concentration-dependent photoluminescence properties

2017 ◽  
Vol 53 (21) ◽  
pp. 3074-3077 ◽  
Author(s):  
Xun Meng ◽  
Qing Chang ◽  
Chaorui Xue ◽  
Jinlong Yang ◽  
Shengliang Hu
Keyword(s):  
Efficient Method ◽  
Carbon Dots ◽  
Energy Efficient ◽  
Large Scale ◽  
Fluorescence Emission ◽  
Efficient Synthesis ◽  
Photoluminescence Properties ◽  
Large Scale Synthesis ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

A facile and energy-efficient method is presented for the large-scale synthesis of fluorescent carbon dots whose fluorescence emission wavelengths shift gradually from 630 to 400 nm with reduction in their concentration.

scholarly journals Solid-state fluorescent carbon dots: quenching resistance strategies, high quantum efficiency control, multicolor tuning, and applications

2020 ◽  
Vol 1 (9) ◽  
pp. 3122-3142
Author(s):  
Junli Wang ◽  
Yongzhen Yang ◽  
Xuguang Liu
Keyword(s):  
Solid State ◽  
Quantum Efficiency ◽  
Carbon Dots ◽  
Comprehensive Overview ◽  
High Quantum Efficiency ◽  
Resistance Strategies ◽  
High Quantum ◽  
Efficiency Control ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

In this review, comprehensive overview about solid-state fluorescent CDs is given, with especial emphasis on the strategies for quenching-resistance, the methods for high quantum efficiency, the methods for multicolor tuning and their application.

Green synthesis of fluorescent carbon dots as an effective fluorescence probe for morin detection

2019 ◽  
Vol 11 (3) ◽  
pp. 353-358 ◽  
Author(s):  
Lizhen Liu ◽  
Zhi Mi ◽  
Qin Hu ◽  
Caiqing Li ◽  
Xiaohua Li ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Green Synthesis ◽  
Carbon Dots ◽  
High Selectivity ◽  
Fluorescence Probe ◽  
Microwave Method ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

A green microwave method using glycine and urea as precursors was developed to synthesize carbon dots (CDs). The CDs can be used as an effective fluorescence probe with high selectivity and sensitivity for the detection of morin based on the fluorescence quenching of CDs.

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.

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