Fluorescence quenching and spectrophotometric methods for the determination of 6-mercaptopurine based on carbon dots

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 52255-52263 ◽  
Author(s):  
Yusheng Yuan ◽  
Yalan Wang ◽  
Shaopu Liu ◽  
Yuanfang Li ◽  
Ruilin Duan ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Carbon Dots ◽  
Fluorescence Probe ◽  
Carbon Dot ◽  
Spectrophotometric Methods

A carbon dot-based fluorescence probe was designed for detecting 6-mercaptopurine (6-MP) via fluorescence quenching.

scholarly journals Highly selective and sensitive detection of amaranth by using carbon dots-based nanosensor

RSC Advances ◽  
2019 ◽  
Vol 9 (45) ◽  
pp. 26315-26320 ◽  
Author(s):  
Lizhen Liu ◽  
Zhi Mi ◽  
Haihong Li ◽  
Caiqing Li ◽  
Qin Hu ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Carbon Dots ◽  
Sensitive Detection

Illustration of the synthesis of C-dots and the determination of amaranth based on the fluorescence quenching of C-dots.

Determination of sunset yellow in soft drinks based on fluorescence quenching of carbon dots

2016 ◽  
Vol 167 ◽  
pp. 106-110 ◽  
Author(s):  
Yusheng Yuan ◽  
Xin Zhao ◽  
Man Qiao ◽  
Jinghui Zhu ◽  
Shaopu Liu ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Carbon Dots ◽  
Soft Drinks ◽  
Sunset Yellow

Facile synthesis of fluorescent carbon dots for determination of curcumin based on fluorescence resonance energy transfer

RSC Advances ◽  
2015 ◽  
Vol 5 (79) ◽  
pp. 64790-64796 ◽  
Author(s):  
Ying Shi ◽  
Chunyan Li ◽  
Shaopu Liu ◽  
Zhongfang Liu ◽  
Jinghui Zhu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Fluorescence Resonance Energy Transfer ◽  
Carbon Dots ◽  
Fluorescence Probe ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Facile Synthesis ◽  
Fluorescence Resonance ◽  
Fluorescent Carbon Dots

A carbon dot-based fluorescence probe was designed for detecting curcumin via fluorescence resonance energy transfer.

Sensitive determination of kaempferol using carbon dots as a fluorescence probe

Talanta ◽  
2015 ◽  
Vol 144 ◽  
pp. 390-397 ◽  
Author(s):  
Lizhen Liu ◽  
Feng Feng ◽  
Man Chin Paau ◽  
Qin Hu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fluorescence Probe ◽  
Sensitive Determination

scholarly journals Ratiometric fluorescent test paper based on silicon nanocrystals and carbon dots for sensitive determination of mercuric ions

2018 ◽  
Vol 5 (6) ◽  
pp. 171922 ◽  
Author(s):  
Xinfeng Guo ◽  
Cui Liu ◽  
Nian Li ◽  
Shudong Zhang ◽  
Zhenyang Wang
Keyword(s):  
Carbon Dots ◽  
Silicon Nanocrystals ◽  
Fluorescence Probe ◽  
Blue Emission ◽  
Cost Effective ◽  
Test Paper ◽  
Internal Reference ◽  
Naked Eye ◽  
Wide Range

Classical dye absorption-based pH test papers are widely used to measure the degree of acidity of media for quantification or semi-quantification by the observation of the naked eye on the variation of colour. However, it remains a challenging task to extend portable and cheap methods to a wide range of analytes for accurate quantification. Here, we report a dosage-sensitive test paper for the assay of mercury ions (Hg 2+ ) with wide colour evolution. The ratiometric fluorescent probe was prepared by mixing blue-emission silicon nanocrystals (Si NCs) and red-emission carbon dots (r-CDs). The Si NCs serve as the reaction site and the r-CDs as the internal reference. Upon the addition of Hg 2+ , the blue fluorescence of the Si NCs was quenched, while the red fluorescence of the r-CDs remained constant, resulting in the consecutive fluorescence colour changes from blue to orange red. The probe demonstrates high selectivity and sensitivity of the visualization assay of Hg 2+ with a detection limit of 7.63 nM. Moreover, we printed the ratiometric fluorescence probe result onto a piece of filter paper to prepare a test paper, which represents an on-site, sensitive, rapid and cost-effective method for the visual determination of Hg 2+ by the naked eye.

scholarly journals Ratiometric fluorescence probe of Cu2+ and biothiols by using carbon dots and copper nanoclusters

RSC Advances ◽  
2021 ◽  
Vol 11 (53) ◽  
pp. 33662-33674
Author(s):  
Ning Zhao ◽  
Jianqiang Song ◽  
Zheng Huang ◽  
Xiuying Yang ◽  
Yousheng Wang ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Fluorescent Probe ◽  
Carbon Dots ◽  
Fluorescence Probe ◽  
Ratiometric Fluorescence ◽  
Copper Nanoclusters ◽  
Dual Mechanism ◽  
Fluorescent Carbon Dots ◽  
Ratiometric Fluorescent Probe

A dual-mechanism ratiometric fluorescent probe based on N-doped yellow fluorescent carbon dots (y-CDs) and blue fluorescent copper nanoclusters (CuNCs) was established for the first simultaneous determination of Cu2+ and biothiols.

scholarly journals Reversible Fluorescence Probe Based on N-Doped Carbon Dots for the Determination of Mercury Ion and Glutathione in Waters and Living Cells

2017 ◽  
Vol 33 (7) ◽  
pp. 761-767 ◽  
Author(s):  
Xiaohan SUN ◽  
Shenghong YANG ◽  
Mingzhen GUO ◽  
Shuang MA ◽  
Mingda ZHENG ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fluorescence Probe ◽  
Living Cells ◽  
Mercury Ion ◽  
Doped Carbon Dots

A carbon-dot-based dual-emission probe for ultrasensitive visual detection of copper ions

2018 ◽  
Vol 42 (24) ◽  
pp. 19771-19778 ◽  
Author(s):  
Yunsuo Kuang ◽  
Linfeng Chen ◽  
Jiahui Lu ◽  
Xike Tian ◽  
Chao Yang ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Carbon Dots ◽  
Visual Detection ◽  
Copper Ions ◽  
Fluorescent Sensor ◽  
Dual Emission ◽  
Carbon Dot

In this work, we successfully developed an ultrasensitive dual-emission fluorescent sensor (CRB) for instant visual determination of Cu2+ by modifying a Cu-sensitive rhodamine B derivative (RB) onto photostable carboxyl modified carbon dots (CDs).

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