“Turn on-off” fluorescent sensor for protamine and heparin based on label-free silicon quantum dots coupled with gold nanoparticles

2015 ◽  
Vol 213 ◽  
pp. 131-138 ◽  
Author(s):  
Xue Peng ◽  
Qian Long ◽  
Haitao Li ◽  
Youyu Zhang ◽  
Shouzhuo Yao
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Fluorescent Sensor ◽  
Label Free ◽  
Silicon Quantum Dots ◽  
Turn On ◽  
Free Silicon

Label-free silicon quantum dots as fluorescent probe for selective and sensitive detection of copper ions

Talanta ◽  
2014 ◽  
Vol 125 ◽  
pp. 372-377 ◽  
Author(s):  
Jiangna Zhao ◽  
Jianhui Deng ◽  
Yinhui Yi ◽  
Haitai Li ◽  
Youyu Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescent Probe ◽  
Copper Ions ◽  
Sensitive Detection ◽  
Label Free ◽  
Silicon Quantum Dots ◽  
Free Silicon

“Turn-On” Fluorescent Sensor for Hg2+ Based on Single-Stranded DNA Functionalized Mn:CdS/ZnS Quantum Dots and Gold Nanoparticles by Time-Gated Mode

2013 ◽  
Vol 85 (2) ◽  
pp. 1164-1170 ◽  
Author(s):  
Dawei Huang ◽  
Chenggang Niu ◽  
Xiaoyu Wang ◽  
Xiaoxiao Lv ◽  
Guangming Zeng
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Fluorescent Sensor ◽  
Single Stranded Dna ◽  
Turn On

A label-free fluorescent sensor based on silicon quantum dots–MnO2 nanosheets for the detection of α-glucosidase and its inhibitor

The Analyst ◽  
2019 ◽  
Vol 144 (24) ◽  
pp. 7398-7405 ◽  
Author(s):  
Jinying Liu ◽  
Xinhe Duan ◽  
Mengke Wang ◽  
Xingguang Su
Keyword(s):  
Quantum Dots ◽  
Fluorescent Sensor ◽  
Label Free ◽  
Silicon Quantum Dots ◽  
Mno2 Nanosheets ◽  
Sensing Platform ◽  
First Time

We have successfully designed a fluorescence SiQD–MnO2 nanosheet sensing platform to detect α-glucosidase and acarbose for the first time.

A Label-Free Silicon Quantum Dots-Based Photoluminescence Sensor for Ultrasensitive Detection of Pesticides

2013 ◽  
Vol 85 (23) ◽  
pp. 11464-11470 ◽  
Author(s):  
Yinhui Yi ◽  
Gangbing Zhu ◽  
Chang Liu ◽  
Yan Huang ◽  
Youyu Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ultrasensitive Detection ◽  
Label Free ◽  
Silicon Quantum Dots ◽  
Free Silicon

A label-free “turn-on” fluorescence platform for glucose based on AuNCs@MnO2 nanocomposites

2019 ◽  
Vol 43 (33) ◽  
pp. 13143-13151 ◽  
Author(s):  
Shimeng Liu ◽  
Changyin Lv ◽  
Ran Liu ◽  
Guiying Yang ◽  
Shiya Li ◽  
...  
Keyword(s):  
Human Serum ◽  
Fluorescent Sensor ◽  
Sensitive Detection ◽  
Label Free ◽  
Turn On

The principle of sensitive detection of glucose in human serum using Bro-AuNCs @MnO2 nanocomposites as a fluorescent sensor.

A dual-responsive fluorescent sensor for Hg2+ and thiols based on N-doped silicon quantum dots and its application in cell imaging

2019 ◽  
Vol 7 (44) ◽  
pp. 7033-7041 ◽  
Author(s):  
Sansan Shen ◽  
Bohui Huang ◽  
Xiaofeng Guo ◽  
Hong Wang
Keyword(s):  
Quantum Dots ◽  
Response Time ◽  
Cell Imaging ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Silicon Quantum Dots ◽  
Fast Response Time ◽  
Dual Responsive ◽  
Doped Silicon

An on–off–on fluorescent sensor based on N-SiQD has the advantages of fast response time and high sensitivity to Hg2+ and GSH.

S doped silicon quantum dots with high quantum yield as a fluorescent sensor for determination of Fe3+ in water

2020 ◽  
Vol 110 ◽  
pp. 110461
Author(s):  
Xiaoshuo Zhang ◽  
Chunhua Li ◽  
Sheliang Zhao ◽  
Huiyun Pang ◽  
Yong Han ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Fluorescent Sensor ◽  
High Quantum Yield ◽  
Silicon Quantum Dots ◽  
High Quantum ◽  
Doped Silicon

Nucleic acid-controlled quantum dots aggregation: A label-free fluorescence turn-on strategy for alkaline phosphatase detection

Talanta ◽  
2017 ◽  
Vol 169 ◽  
pp. 64-69 ◽  
Author(s):  
Zhenzhen Hu ◽  
Jian Chen ◽  
Yongxin Li ◽  
Yan Wang ◽  
Qingfeng Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Alkaline Phosphatase ◽  
Nucleic Acid ◽  
Label Free ◽  
Turn On ◽  
Fluorescence Turn On

Improved Detection of Hg2+ in Aqueous Solution with High Sensitivity and Selectivity by Using Mercury-Specific DNA, Sybr Green I and Gold Nanoparticles

2011 ◽  
Vol 239-242 ◽  
pp. 934-939
Author(s):  
Hui Xu ◽  
Shuli Gao ◽  
Jian Nong Chen ◽  
Quan Wen Liu
Keyword(s):  
Gold Nanoparticles ◽  
High Sensitivity ◽  
Sybr Green ◽  
Sybr Green I ◽  
Fluorescence Signal ◽  
Potassium Ions ◽  
Label Free ◽  
Turn On ◽  
Sensitivity And Selectivity ◽  
Fluorescence Turn On

We report a label-free, fast, fluorescence turn on assay for Hg2+detecton by using mercury-specific DNA (MSD), Sybr Green I (SG) and gold nanoparticles (AuNPs). SG efficiently discriminates MSD and MSD/Hg2+complex. The addition of gold nanoparticle decreases the background fluorescence signal further for MSD. The fluorescence intensity of MSD/Hg2+complex keeps constant after addition of AuNPs. This property improves the signal-to-background ratio and decreases the detection limitation further. In addition, the method shows improved selectivity compared with that in the absence of AuNPs. This strategy could be applied to the detection of potassium ions and showed good generality.

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