A simple colorimetric and fluorescent “on-off-on” dual-mode sensor based on cyan fluorescent carbon dots/AuNPs for the detection of L-cysteine and Zinc thiazole

2021 ◽  
pp. 107079
Author(s):  
Lili Sun ◽  
Wanglong Wei ◽  
Hongmei Zhang ◽  
Jiyao Xu ◽  
Xihui Zhao
Keyword(s):  
Carbon Dots ◽  
Dual Mode ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

A dual-mode colorimetric and fluorometric “light on” sensor for thiocyanate based on fluorescent carbon dots and unmodified gold nanoparticles

The Analyst ◽  
2015 ◽  
Vol 140 (24) ◽  
pp. 8157-8164 ◽  
Author(s):  
Dan Zhao ◽  
Chuanxia Chen ◽  
Lixia Lu ◽  
Fan Yang ◽  
Xiurong Yang
Keyword(s):  
Gold Nanoparticles ◽  
Carbon Dots ◽  
Dual Mode ◽  
Highly Sensitive ◽  
Fluorometric Sensor ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

A novel, highly sensitive and selective dual-readout (colorimetric and fluorometric) sensor based on fluorescent carbon dots (CDs) and unmodified gold nanoparticles (AuNPs) for the detection of thiocyanate (SCN−) was proposed.

Nitrogen-doped carbon dots from Hutai-8 grape skin and their application in Hg2+ detection

2020 ◽  
Vol 16 ◽  
Author(s):  
Pan Zhang ◽  
Shun-Sheng Zhao ◽  
JiaJia Wang ◽  
Xiang Rong Liu
Keyword(s):  
Heavy Metal ◽  
Carbon Source ◽  
Fluorescence Quenching ◽  
Hydrothermal Method ◽  
Water Samples ◽  
Carbon Dots ◽  
Mercury Ions ◽  
Grape Skin ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Background: In recent years, environmental pollution and heavy metal pollution caused by rapid urbanization and industrialization have become increasingly serious. Among them, mercury (II) ion (Hg2+) is one of the highly toxic heavy metal ions, and its pollution comes from various natural resources and human activities. Therefore, people attach great importance to the development of analytical methods for effective analysis and sensitive detection of Hg2+ . Objective: Using grape skin as a green and environmental friendly carbon source, to synthesize fluorescent carbon dots, and try to apply them to the detect the concentration of Hg2+ in water. Method: Using "Hutai No. 8" grape skin as carbon source, fluorescent carbon dots were synthesized by one-step hydrothermal method. Structure and fluorescent properties of the carbon dots were tested using TEM, XPS, XRD and other characterization instruments, and their utilization on detection of mercury ions in the actual water samples was explored. Results: The CDs had a particle size of about 4.8 nm and a spherical shape. There are N-H, C-N, C=O and other functional groups on the surface. It was found that Hg2+ has obvious fluorescence quenching effect on CDs, and thus CDs fluorescence quenching method to detect the concentration Hg2+ was established, and the detection limit is 3.7 μM, which could be applied to test the concentration of Hg2+ in water samples. Conclusion: Using grape skin as carbon source, fluorescent carbon dots were successfully synthesized by hydrothermal method. Carbon dots were used to detect mercury ions in water, and a method for detecting mercury ions in actual water samples was established.

Anti-counterfeiting application of fluorescent carbon dots derived from wasted coffee grounds

Optik ◽  
2021 ◽  
pp. 166449
Author(s):  
Woo Tae Hong ◽  
Jin Young Park ◽  
Jong Won Chung ◽  
Hyun Kyoung Yang ◽  
Jae-Yong Je
Keyword(s):  
Carbon Dots ◽  
Coffee Grounds ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Carbon dots derived from Fusobacterium nucleatum for intracellular determination of Fe3+ and bioimaging both in vitro and in vivo

2021 ◽  
Author(s):  
Lijuan Liu ◽  
Shengting Zhang ◽  
Xiaodan Zheng ◽  
Hongmei Li ◽  
Qi Chen ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fusobacterium Nucleatum ◽  
Living Cells ◽  
First Time ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Fusobacterium nucleatum has been employed for the first time to synthesize fluorescent carbon dots which could be applied for the determination of Fe3+ ions in living cells and bioimaging in vitro and in vivo with excellent biocompatibility.

scholarly journals Green fluorescent carbon dots as targeting probes for LED‐dependent bacterial killing

Nano Select ◽  
2021 ◽  
Author(s):  
Jennifer Samphire ◽  
Yuiko Takebayashi ◽  
Stephen A. Hill ◽  
Nicholas Hill ◽  
Kate J. Heesom ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Bacterial Killing ◽  
Green Fluorescent ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon
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