N-Doped carbon dots for the fluorescence and colorimetry dual-mode detection of curcumin

The Analyst ◽  
2021 ◽  
Author(s):  
Yanan Yan ◽  
Huilin Zhang ◽  
Fangfang Du ◽  
Yating Meng ◽  
Shaomin Shuang ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Carbon Dots ◽  
Dual Mode ◽  
Nitrogen Doped ◽  
Mode Detection ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Nitrogen doped carbon dots (N-CDs) were synthesized by a one-step hydrothermal method with dopamine and ethylenediamine.

Facile synthesis of nitrogen-doped carbon dots from pork liver and its sensing of 6-thioguanine based on inner filter effect

2021 ◽  
Author(s):  
Wenjing Chen ◽  
Jun Fan ◽  
Xianxue Wu ◽  
Dongbao Hu ◽  
Yunying Wu ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Hydrothermal Method ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Pork Liver ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

In this work, a facile one-step hydrothermal method was developed to synthesize nitrogen-doped carbon dots (N-CDs) using pork liver. The quantum yield of the prepared N-CDs was as high as...

scholarly journals Detection of Melamine Based on the Fluorescence Changes of Nitrogen-Doped Carbon Dots

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Wenzhi Yin ◽  
Chaoqun Ma ◽  
Tuo Zhu ◽  
Jiao Gu ◽  
Chun Zhu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Detection Method ◽  
Limit Of Detection ◽  
High Sensitivity ◽  
Mercury Ions ◽  
Measuring Range ◽  
Nitrogen Doped ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

In order to determine the concentration of melamine, nitrogen-doped carbon dots (NCDs) were synthesized in one step as a fluorescent probe. Uric acid and diethylenetriamine were used as carbon source and nitrogen source, respectively. The experimental results showed that the fluorescence of NCDs can be quenched by mercury ions (Hg2+). Due to the strong coordination affinity between the carbon-nitrogen heterocyclic of melamine and Hg2+, part of Hg2+ coordinated with melamine when melamine was mixed with Hg2+. Then, the fluorescence of the added NCDs was quenched by the remaining Hg2+. Therefore, the concentration of melamine could be determined. The results show that the method has high sensitivity in wide measuring range that the linear ranges are 50–400 μg/L and 800–2500 μg/L, and the R2 is 0.997 and 0.988, respectively, with the limit of detection (LOD) of 21.76 μg/L. The NCDs are easy to fabricate, and the detection method is easy to implement. In this study, a new method for melamine detection was established, and the proposed method for melamine detection can provide some insights for food safety detection.

scholarly journals Nitrogen-doped carbon dots for sensitive detection of ferric ions and monohydrogen phosphate by the naked eye and imaging in living cells

2021 ◽  
Author(s):  
Qiaoling Liu ◽  
Borong Ren ◽  
Kaixin Xie ◽  
Yanmei Yan ◽  
Ruirong Liu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Carbon Dots ◽  
Living Cells ◽  
Sensitive Detection ◽  
Ferric Ions ◽  
One Pot ◽  
Nitrogen Doped ◽  
Naked Eye ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Nitrogen doped carbon dots (N-CDs) have been prepared via a one-pot hydrothermal method by using formamide and o-phenylenediamine as the carbon precursors for Fe3+ and HPO42− detection.

Nitrogen-doped carbon dots as fluorescent probe for detection of curcumin based on the inner filter effect

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 95054-95060 ◽  
Author(s):  
Qingyan Zhang ◽  
Caihong Zhang ◽  
Zengbo Li ◽  
Jinyin Ge ◽  
Chenzhong Li ◽  
...  
Keyword(s):  
Citric Acid ◽  
Carbon Source ◽  
Nitrogen Source ◽  
Carbon Dots ◽  
Inner Filter Effect ◽  
Nitrogen Doped ◽  
Filter Effect ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A facile, economical and green one-step hydrothermal method for N-doped CDs was presented by using citric acid as carbon source and urea as nitrogen source. The fluorescence of N-doped CDs quenched dramatically from curcumin via inner filter effect.

One-step synthesis of robust nitrogen-doped carbon dots: acid-evoked fluorescence enhancement and their application in Fe3+ detection

2015 ◽  
Vol 3 (34) ◽  
pp. 17747-17754 ◽  
Author(s):  
Yang Liu ◽  
Yanan Liu ◽  
Soo-Jin Park ◽  
Yifan Zhang ◽  
Taewoo Kim ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fluorescence Enhancement ◽  
Alginic Acid ◽  
Nitrogen Doped ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Robust and highly fluorescent N-doped carbon dots (CDs) are obtained from a hybrid source, alginic acid and ethanediamine.

Microplasma-assisted rapid synthesis of luminescent nitrogen-doped carbon dots and their application in pH sensing and uranium detection

Nanoscale ◽  
2015 ◽  
Vol 7 (48) ◽  
pp. 20743-20748 ◽  
Author(s):  
Zhe Wang ◽  
Yuexiang Lu ◽  
Hang Yuan ◽  
Zhonghua Ren ◽  
Chao Xu ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Carbon Dots ◽  
Ph Sensing ◽  
Rapid Synthesis ◽  
Nitrogen Doped ◽  
One Step ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

We developed a rapid one-step atmospheric-pressure microplasma-assisted method to prepare carbon dots for pH sensing and uranium detection.

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