Cobalt(ii) ions detection using carbon dots as an sensitive and selective fluorescent probe

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67481-67487 ◽  
Author(s):  
Depeng Kong ◽  
Fanyong Yan ◽  
Ziyi Han ◽  
Jinxia Xu ◽  
Xingfei Guo ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Fluorescent Detection ◽  
Ligand Interaction ◽  
Metal Ligand

Carbon dots were explored for fluorescent detection of Co2+ through metal–ligand interaction. Moreover, the quenched fluorescence can be turned on with the addition of biothiols, which demonstrates the possible mechanism.

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.

Polyethyleneimine-functionalized carbon dots as a fluorescent probe for doxorubicin hydrochloride by an inner filter effect

2021 ◽  
Vol 112 ◽  
pp. 110743
Author(s):  
Min Yang ◽  
Yujia Yan ◽  
Enzhou Liu ◽  
Xiaoyun Hu ◽  
Hong Hao ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Doxorubicin Hydrochloride ◽  
Filter Effect

Turn-on fluorescent probe for dopamine detection in solutions and live cells based on in situ formation of aminosilane-functionalized carbon dots

2021 ◽  
Vol 1157 ◽  
pp. 338394
Author(s):  
Xiao-Yue Tang ◽  
Yi-Ming Liu ◽  
Xiao-Lin Bai ◽  
Hao Yuan ◽  
Yi-Kao Hu ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Live Cells ◽  
Turn On ◽  
Dopamine Detection ◽  
In Situ Formation

scholarly journals Anchoring zinc-doped carbon dots on a paper-based chip for highly sensitive fluorescence detection of copper ions

The Analyst ◽  
2021 ◽  
Vol 146 (20) ◽  
pp. 6297-6305
Author(s):  
Qinglan Miao ◽  
Ji Qi ◽  
Yuanyuan Li ◽  
Xinxia Fan ◽  
Dongmei Deng ◽  
...  
Keyword(s):  
Fluorescence Detection ◽  
Carbon Dots ◽  
Active Sites ◽  
Copper Ions ◽  
Fluorescent Detection ◽  
Zn Doping ◽  
Highly Sensitive ◽  
Doped Carbon Dots

A novel paper-based chip that anchored zinc-doped carbon dots was constructed for sensitive and stable fluorescent detection of Cu2+. Zn doping increased the active sites for simplifying the modification of carbon dots.

Metal–ligand interaction of Ti–C6H6 complex size-selected by a 2-m long electrostatic hexapole field

2003 ◽  
Vol 369 (1-2) ◽  
pp. 55-59 ◽  
Author(s):  
Kohei Imura ◽  
Hiroshi Ohoyama ◽  
Toshio Kasai
Keyword(s):  
Ligand Interaction ◽  
Metal Ligand

Highly sensitive, stable, and precise detection of dopamine with carbon dots/tyrosinase hybrid as fluorescent probe

RSC Advances ◽  
2014 ◽  
Vol 4 (87) ◽  
pp. 46437-46443 ◽  
Author(s):  
Hao Li ◽  
Juan Liu ◽  
Manman Yang ◽  
Weiqian Kong ◽  
Hui Huang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots ◽  
Low Cost ◽  
High Sensitivity ◽  
Highly Sensitive

The carbon dots/tyrosinase hybrid as a low-cost fluorescent probe for the detection of dopamine exhibits high sensitivity, stability, and precision.

Carbon Dots: An Excellent Fluorescent Probe for Contaminant Sensing and Remediation

Small ◽  
2022 ◽  
pp. 2105579
Author(s):  
Ajith M. P. ◽  
Sonali Pardhiya ◽  
Paulraj Rajamani
Keyword(s):  
Fluorescent Probe ◽  
Carbon Dots

A rapid and sensitive turn-on fluorescent probe for ascorbic acid detection based on carbon dots–MnO2 nanocomposites

2017 ◽  
Vol 9 (38) ◽  
pp. 5653-5658 ◽  
Author(s):  
Yalei Hu ◽  
Lin Zhang ◽  
Xin Geng ◽  
Jia Ge ◽  
Haifang Liu ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Fluorescent Probe ◽  
Carbon Dots ◽  
Turn On ◽  
Specific Determination ◽  
Ascorbic Acid Detection

A rapid turn-on fluorescent probe is proposed for the sensitive and specific determination of ascorbic acid based on carbon dots–MnO2 nanocomposites.

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