Aggregation-induced red shift in N,S-doped chiral carbon dot emissions for moisture sensing

2019 ◽  
Vol 43 (33) ◽  
pp. 13240-13248 ◽  
Author(s):  
Farwa Arshad ◽  
Md Palashuddin Sk
Keyword(s):  
Organic Solvents ◽  
Carbon Dots ◽  
Red Shift ◽  
Commercial Products ◽  
Carbon Dot ◽  
Chiral Carbon ◽  
Moisture Sensing

Herein, we report aggregation induced red shifted emissions in N,S-doped chiral carbon dots for moisture sensing in common organic solvents and commercial products.

Formation Mechanism and Chirality Evolution of Chiral Carbon Dots Prepared via Radical Assisted Synthesis at Room Temperature

Nanoscale ◽  
2021 ◽  
Author(s):  
Lorenzo Branzi ◽  
Giacomo Lucchini ◽  
Elti Cattaruzza ◽  
Nicola Pinna ◽  
Alvise Benedetti ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Formation Mechanism ◽  
Carbon Dots ◽  
Room Temperature ◽  
Chiral Carbon

We report on a Cu(II) catalyzed process for the production of cysteine based chiral carbon dots, the process does not require any thermal treatment and the carbon dots formation is...

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.

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.

Chiral Carbon Dots-Enzyme Nanoreactors with Enhanced Catalytic Activity for Cancer Therapy

2021 ◽  
Author(s):  
Pengli Gao ◽  
Shuang Chen ◽  
Shi Liu ◽  
Hongxin Liu ◽  
Zhigang Xie ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Cancer Therapy ◽  
Carbon Dots ◽  
Chiral Carbon

NaCl nanocrystal-encapsulated carbon dots as a solution-based sensor for phosphorescent sensing of trace amounts of water in organic solvents

2021 ◽  
Author(s):  
Manivannan Madhu ◽  
Wei-Lung Tseng
Keyword(s):  
Organic Solvents ◽  
Trace Amount ◽  
Carbon Dots

The carbon dots embeded in NaCl nanocrystals can be used to detect trace amount of water in organic solvents based on phosphorescence mode.

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...

scholarly journals Functionalized Chitosan–Carbon Dots: A Fluorescent Probe for Detecting Trace Amount of Water in Organic Solvents

ACS Omega ◽  
2019 ◽  
Vol 4 (6) ◽  
pp. 11301-11311 ◽  
Author(s):  
Shweta Pawar ◽  
Uday Kumar Togiti ◽  
Anupam Bhattacharya ◽  
Amit Nag
Keyword(s):  
Fluorescent Probe ◽  
Organic Solvents ◽  
Trace Amount ◽  
Carbon Dots
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