Multiple heteroatom-doped photoluminescent carbon dots for ratiometric detection of Hg2+ ions in cell imaging and environmental applications

2022 ◽  
Author(s):  
Sonaimuthu Mohandoss ◽  
Hari Datta Khanal ◽  
Palanisamy Subramanian ◽  
SangGuan You ◽  
Jae-Jin Shim ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Cell Imaging ◽  
Living System ◽  
Environmental Applications ◽  
Ratiometric Detection

Photoluminescent detection and imaging of Hg2+ ions in the biochemical living system are of great importance. In this study, a new photoluminescent probe based on nitrogen (N), sulfur (S), and...

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.

Ratiometric detection of heavy metal ions using fluorescent carbon dots

2019 ◽  
Vol 6 (4) ◽  
pp. 1121-1130 ◽  
Author(s):  
Francisco Yarur ◽  
Jun-Ray Macairan ◽  
Rafik Naccache
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Carbon Dots ◽  
Heavy Metal Ions ◽  
Ratiometric Detection ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Classical methods for the detection of heavy metal ions in water are tedious and time consuming.

Fluorescent carbon dots from milk by microwave cooking

RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 41516-41521 ◽  
Author(s):  
Dan Wang ◽  
Lin Zhu ◽  
Christopher Mccleese ◽  
Clemens Burda ◽  
Jian-Feng Chen ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Cell Imaging ◽  
Two Photon ◽  
Microwave Cooking ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Fluorescent carbon dots were synthesized from milk by microwave cooking and used for two-photon excitedin vitrocell imaging.

A water soluble ESIPT-based fluorescent chemodosimeter for the ratiometric detection of palladium ions in aqueous solution and its application in live-cell imaging

2018 ◽  
Vol 42 (19) ◽  
pp. 15587-15592 ◽  
Author(s):  
Jing Huang ◽  
Yu Ding ◽  
Hongyu Fu ◽  
Bo Chen ◽  
Yifeng Han
Keyword(s):  
Aqueous Solution ◽  
Excited State ◽  
Proton Transfer ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Intramolecular Proton Transfer ◽  
Live Cell ◽  
Water Soluble ◽  
Ratiometric Detection ◽  
Fluorescent Chemodosimeter

A new Excited State Intramolecular Proton Transfer (ESIPT) based water-soluble fluorescent chemodosimeter for the ratiometric detection of palladium ions has been rationally designed and developed.

Green synthesis of fluorescent carbon dots from Hongcaitai for selective detection of hypochlorite and mercuric ions and cell imaging

2018 ◽  
Vol 263 ◽  
pp. 426-435 ◽  
Author(s):  
Lu-Shuang Li ◽  
Xin-Yue Jiao ◽  
Yu Zhang ◽  
Cheng Cheng ◽  
Kun Huang ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Selective Detection ◽  
Mercuric Ions ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

scholarly journals Photoluminescent F-doped carbon dots prepared by ring-opening reaction for gene delivery and cell imaging

RSC Advances ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 6053-6062 ◽  
Author(s):  
Tian-Ying Luo ◽  
Xi He ◽  
Ji Zhang ◽  
Ping Chen ◽  
Yan-Hong Liu ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Gene Delivery ◽  
Carbon Dots ◽  
Ring Opening ◽  
Cell Imaging ◽  
Imaging Agents ◽  
Ring Opening Reaction ◽  
Doped Carbon Dots

Carbon dots (CDs) are photoluminescent nanoparticles with distinctive properties, having great potential in nano-biomaterial systems such as gene/drug delivery vectors and cell imaging agents.

scholarly journals Malic Acid Carbon Dots: From Super-resolution Live-Cell Imaging to Highly Efficient Separation

ACS Nano ◽  
2018 ◽  
Vol 12 (6) ◽  
pp. 5741-5752 ◽  
Author(s):  
Bo Zhi ◽  
Yi Cui ◽  
Shengyang Wang ◽  
Benjamin P. Frank ◽  
Denise N. Williams ◽  
...  
Keyword(s):  
Malic Acid ◽  
Carbon Dots ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Super Resolution ◽  
Live Cell ◽  
Efficient Separation ◽  
Highly Efficient
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