Branched polyethylenimine-functionalized carbon dots as sensitive and selective fluorescent probes for N-acetylcysteine via an off–on mechanism

The Analyst ◽  
2017 ◽  
Vol 142 (22) ◽  
pp. 4221-4227 ◽  
Author(s):  
Hui Liu ◽  
Rong Sheng Li ◽  
Jun Zhou ◽  
Cheng Zhi Huang
Keyword(s):  
Fluorescent Probes ◽  
Analytical Method ◽  
Carbon Dots ◽  
Carbon Dot ◽  
Branched Polyethylenimine

A novel fluorescence (FL) analytical method to determine N-acetylcysteine (NAC) was established by using a branched polyethyleneimine-functionalized carbon dot fluorescent system involving FL quenching by Cu2+ and subsequent FL recovery upon addition of NAC.

An evaporation induced self-assembly approach to prepare polymorphic carbon dot fluorescent nanoprobes for protein labelling

2018 ◽  
Vol 54 (93) ◽  
pp. 13123-13126 ◽  
Author(s):  
Lei Li ◽  
Zhongyu Lian ◽  
Xi Yan ◽  
Meng Xia ◽  
Mingcui Zhang
Keyword(s):  
Ionic Strength ◽  
Fluorescent Probes ◽  
Self Assembly ◽  
Carbon Dots ◽  
Room Temperature ◽  
Protein Labelling ◽  
Carbon Dot ◽  
Evaporation Induced Self Assembly ◽  
Carbon Nanoclusters

Herein, we report a novel route to prepare polymorphic carbon dot fluorescent probes via the evaporation-induced self-assembly of glutaraldehyde and carbon dots, which first usually form carbon nanoclusters which then could self-assemble to form carbon nanocrystals, nanospheres or nanofibers in different ionic strength solutions at room temperature.

A phenylenediamine-based carbon dot-modified silica stationary phase for hydrophilic interaction chromatography

The Analyst ◽  
2020 ◽  
Vol 145 (3) ◽  
pp. 1056-1061 ◽  
Author(s):  
Yali Yang ◽  
Haijuan Zhang ◽  
Jia Chen ◽  
Zhan Li ◽  
Liang Zhao ◽  
...  
Keyword(s):  
Stationary Phase ◽  
Carbon Dots ◽  
Porous Silica ◽  
Hydrophilic Interaction Chromatography ◽  
Silica Spheres ◽  
Hydrophilic Interaction ◽  
Modified Silica ◽  
Carbon Dot ◽  
New Stationary Phase ◽  
Enhanced Selectivity

Red emitting carbon dots derived from p-phenylenediamine were successfully grafted onto the surface of porous silica spheres which served as a new stationary phase for hydrophilic interaction chromatography with enhanced selectivity.

Curauá-derived carbon dots: Fluorescent probes for effective Fe(III) ion detection, cellular labeling and bioimaging

2021 ◽  
pp. 112409
Author(s):  
Sebastian Raja ◽  
Eva Miriam Buhl ◽  
Stephan Dreschers ◽  
Carmen Schalla ◽  
Martin Zenke ◽  
...  
Keyword(s):  
Fluorescent Probes ◽  
Carbon Dots ◽  
Ion Detection ◽  
Cellular Labeling

Blue Emitted Carbon Dots as Fluorescent Probes for Detection of 4-nitrophenol and 2-nitrophenol

2021 ◽  
Vol 42 (08) ◽  
pp. 1297-1306
Author(s):  
Yu ZOU ◽  
◽  
Ming-yu TANG ◽  
Yao-yao QU ◽  
Fang ZHANG ◽  
...  
Keyword(s):  
Fluorescent Probes ◽  
Carbon Dots

Carbon dots isolated from chromatographic fractions for sensing applications

RSC Advances ◽  
2015 ◽  
Vol 5 (129) ◽  
pp. 106838-106847 ◽  
Author(s):  
Lizhen Liu ◽  
Feng Feng ◽  
Man Chin Paau ◽  
Qin Hu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Fluorescent Probes ◽  
Carbon Dots ◽  
Sensitive Detection ◽  
Sensing Applications

An as-synthesised C-dots sample derived from acetic acid, NAC and P2O5 can be separated and fractionated into various C-dots species by HPLC. The brighter C-dots fractions can be used as fluorescent probes for sensitive detection of Fe3+ and Hg2+.

scholarly journals Synthesis and Optical Characterization of Carbon Dot from Peels of Dragon Fruit and Pear

2018 ◽  
Vol 4 (1) ◽  
pp. 19 ◽  
Author(s):  
Selvy Uftovia Hepriyadi ◽  
. Isnaeni
Keyword(s):  
Carbon Dots ◽  
Optical Characterization ◽  
Heating Time ◽  
Emission Wavelength ◽  
Time Resolved ◽  
Carbon Dot ◽  
Infrared Wavelength ◽  
Dragon Fruit ◽  
Time Changes

Fluorescence materials such as carbon dots are unique and non-toxic materials that can be produced using many methods. In this research, synthesis and optical characterization of carbon dots from the peels of dragon fruit and pear have been done. The synthesis uses bottom-up method using microwave with 20 minutes, 40 minutes, and 80 minutes of heating time. The result of optical characterizations showed that the samples that have been heat treated are carbon dots based of the absorbance in the range of 280-350 nm, and the intensity are decreased in the range of visible and infrared wavelength. There are emission and intensity changes by different heat treatments. From the samples of dragon fruit's peels, the emission wavelength tended to shift toward visible light at the wavelength of 551.51 nm, 507.98 nm and 487.28 nm with the excitation at the wavelength of 420 nm from pulsed pico-laser. While, the emission wavelength from the samples of pears peels were fluctuate in wavelength of 529.09 nm, 507.52 nm and 519.46 nm. Similarly, the time-resolved photoluminescence characterization test showed that there were time changes in each sample of carbon dot. The decay lifetime of carbon dots was fluctuated between 4.5 ns - 5.4 ns for dragon fruit’s peels and about 1.9 ns - 2.4 ns for pear's peels.

Carbon dots prepared from citric acid and urea as fluorescent probes for hypochlorite and peroxynitrite

2016 ◽  
Vol 183 (5) ◽  
pp. 1769-1777 ◽  
Author(s):  
Eliana F. C. Simões ◽  
João M. M. Leitão ◽  
Joaquim C. G. Esteves da Silva
Keyword(s):  
Citric Acid ◽  
Fluorescent Probes ◽  
Carbon Dots

Polychromatic Carbon Dots Prepared from m-Phenylenediamine and Urea as Multifunctional Fluorescent Probes

2021 ◽  
Author(s):  
Kamile Arkin ◽  
Yuxin Zheng ◽  
Jiawei Hao ◽  
Siyi Zhang ◽  
Qingkun Shang
Keyword(s):  
Fluorescent Probes ◽  
Carbon Dots

Near-Infrared Emitting Dual-Stimuli-Responsive Carbon Dots from Endogenous Bile Pigments

Nanoscale ◽  
2021 ◽  
Author(s):  
Parinaz Fathi ◽  
Parikshit Moitra ◽  
Madeleine M. McDonald ◽  
Mandy Brigitte Esch ◽  
Dipanjan Pan
Keyword(s):  
Surface Modification ◽  
Carbon Dots ◽  
Biomedical Applications ◽  
Near Infrared ◽  
Bile Pigments ◽  
Careful Selection ◽  
Stimuli Responsive ◽  
Carbon Dot ◽  
Surface Modification Techniques ◽  
Selection Of

Carbon dots are biocompatible nanoparticles suitable for a variety of biomedical applications. Careful selection of carbon dot precursors and surface modification techniques has allowed for the development of carbon dots...

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