A novel N/Au co-doped carbon dot probe for continuous detection of silicate and phosphate by resonance Rayleigh scattering

The Analyst ◽  
2019 ◽  
Vol 144 (17) ◽  
pp. 5090-5097 ◽  
Author(s):  
Jiao Li ◽  
Chongning Li ◽  
Zhihao Zhang ◽  
Xiyin Wang ◽  
Aihui Liang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Rayleigh Scattering ◽  
Carbon Nanomaterials ◽  
Resonance Rayleigh Scattering ◽  
Dot Probe ◽  
Carbon Dot ◽  
Doped Carbon Dots ◽  
Co Doped

Co-doped carbon dots are new multifunctional carbon nanomaterials.

scholarly journals A double fluorescent nanoprobe based on phosphorus/nitrogen co-doped carbon dots for detecting dichromate ions and dopamine

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31793-31802 ◽  
Author(s):  
Bin Wu ◽  
Xiaofeng Shi ◽  
Wei Han ◽  
Taishan Wang ◽  
Chunru Wang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Inner Filter Effect ◽  
Carbon Dot ◽  
Fluorescent Nanoprobe ◽  
Filter Effect ◽  
Dichromate Ions ◽  
Doped Carbon Dots ◽  
Co Doped

An “on–off–on” fluorescent phosphorus/nitrogen co-doped carbon dot (PNCD) probe was explored for the determination of Cr(vi) and dopamine resulting from the inner filter effect (IFE).

scholarly journals Aptamer Turn-On SERS/RRS/Fluorescence Tri-mode Platform for Ultra-trace Urea Determination Using Fe/N-Doped Carbon Dots

2021 ◽  
Vol 9 ◽  
Author(s):  
Chongning Li ◽  
Jiao Li ◽  
Aihui Liang ◽  
Guiqing Wen ◽  
Zhiliang Jiang
Keyword(s):  
Carbon Dots ◽  
Rayleigh Scattering ◽  
High Sensitivity ◽  
Resonance Rayleigh Scattering ◽  
Indicator Reaction ◽  
Turn On ◽  
Surface Enhanced Raman ◽  
Ultra Trace ◽  
Doped Carbon Dots

Sensitive and selective methods for the determination of urea in samples such as dairy products are important for quality control and health applications. Using ammonium ferric citrate as a precursor, Fe/N-codoped carbon dots (CDFeN) were prepared by a hydrothermal procedure and characterized in detail. CDFeN strongly catalyzes the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by H2O2 to turn on an indicator molecular reaction, forming an oxidized tetramethylbenzidine (TMBox) probe with surface-enhanced Raman scattering, resonance Rayleigh scattering, and fluorescence (SERS, RRS, and FL) signals at 1,598 cm−1, 370 nm, and 405 nm, respectively. The urea aptamer (Apt) can turn off the indicator reaction to reduce the tri-signals, and the addition of urea turns on the indicator reaction to linearly enhance the SERS/RRS/FL intensity. Thus, a novel Apt turn-on tri-mode method was developed for the assay determination of ultra-trace urea with high sensitivity, good selectivity, and accuracy. Trace adenosine triphosphate and estradiol can also be determined by the Apt-CDFeN catalytic analytical platform.

Synthesis of a carbon-dot-based photoluminescent probe for selective and ultrasensitive detection of Hg2+ in water and living cells

The Analyst ◽  
2015 ◽  
Vol 140 (4) ◽  
pp. 1221-1228 ◽  
Author(s):  
Sasmita Mohapatra ◽  
Swagatika Sahu ◽  
Niharika Sinha ◽  
Sujit K. Bhutia
Keyword(s):  
Hydrothermal Synthesis ◽  
Quantum Yield ◽  
Carbon Dots ◽  
Living Cells ◽  
Ultrasensitive Detection ◽  
Carbon Dot ◽  
Doped Carbon Dots ◽  
Co Doped

Nitrogen and sulphur co-doped carbon dots with high PL quantum yield and photostability have been synthesized by a simple hydrothermal synthesis and successfully used for bioimaging of Hg2+ in living cells.

Nitrogen and Sulfur Co-doped Fluorescent Carbon Dots for the Detection of Morin and Cell Imaging

2018 ◽  
Vol 15 (1) ◽  
pp. 47-55
Author(s):  
Xuebing Li ◽  
Haifen Yang ◽  
Ning Wang ◽  
Tijian Sun ◽  
Wei Bian ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Fluorescent Probe ◽  
Fluorescence Intensity ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Water Soluble ◽  
Heating Process ◽  
X Ray ◽  
Doped Carbon Dots ◽  
Co Doped

Background: Morin has many pharmacological functions including antioxidant, anticancer, anti-inflammatory, and antibacterial effects. It is commonly used in the treatment of antiviral infection, gastropathy, coronary heart disease and hepatitis B in clinic. However, researches have shown that morin is likely to show prooxidative effects on the cells when the amount of treatment is at high dose, leading to the decrease of intracellular ATP levels and the increase of necrosis process. Therefore, it is necessary to determine the concentration of morin in biologic samples. Method: Novel water-soluble and green nitrogen and sulfur co-doped carbon dots (NSCDs) were prepared by a microwave heating process with citric acid and L-cysteine. The fluorescence spectra were collected at an excitation wavelength of 350 nm when solutions of NSCDs were mixed with various concentrations of morin. Results: The as-prepared NSCDs were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The fluorescence intensity of NSCDs decreased significantly with the increase of morin concentration. The fluorescence intensity of NSCDs displayed a linear response to morin in the concentration 0.10-30 μM with a low detection limit of 56 nM. The proposed fluorescent probe was applied to analysis of morin in human body fluids with recoveries of 98.0-102%. Conclusion: NSCDs were prepared by a microwave heating process. The present analytical method is sensitive to morin. The quenching process between NSCDs and morin is attributed to the static quenching. In addition, the cellular toxicity on HeLa cells indicated that the as-prepared NSCDs fluorescent probe does not show obvious cytotoxicity in cell imaging. Our proposed method possibly opens up a rapid and nontoxic way for preparing heteroatom doped carbon dots with a broad application prospect.

Multifunctional N,S co-doped carbon dots for sensitive probing of temperature, ferric ion, and methotrexate

2019 ◽  
Vol 411 (8) ◽  
pp. 1647-1657 ◽  
Author(s):  
Pengli Zuo ◽  
Jianhua Liu ◽  
Hongna Guo ◽  
Chenghong Wang ◽  
Hongqian Liu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Ferric Ion ◽  
Doped Carbon Dots ◽  
Co Doped

Excitation-dependent multiple luminescence emission of nitrogen and sulfur co-doped carbon dots for cysteine sensing, bioimaging, and photoluminescent ink applications

2021 ◽  
pp. 106280
Author(s):  
Sonaimuthu Mohandoss ◽  
Subramanian Palanisamy ◽  
Veeraraghavan Vishnu Priya ◽  
Surapaneni Krishna Mohan ◽  
Jae-Jin Shim ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Luminescence Emission ◽  
Doped Carbon Dots ◽  
Co Doped

Magnesium-nitrogen co-doped carbon dots enhance plant growth through multifunctional regulation in photosynthesis

2021 ◽  
Vol 422 ◽  
pp. 130114
Author(s):  
Yadong Li ◽  
Xiaokai Xu ◽  
Bingfu Lei ◽  
Jianle Zhuang ◽  
Xuejie Zhang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Carbon Dots ◽  
Doped Carbon Dots ◽  
Co Doped

Nitrogen and Sulfur Co-doped Carbon Dots Enhance Drought Resistance in Tomato and Mung Beans

2021 ◽  
Author(s):  
Erfeng Kou ◽  
Wei Li ◽  
Haoran Zhang ◽  
Xian Yang ◽  
Yunyan Kang ◽  
...  
Keyword(s):  
Drought Resistance ◽  
Carbon Dots ◽  
Doped Carbon Dots ◽  
Co Doped
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