Highly sensitive “turn-on” fluorescence probe for the detection of sparfloxacin in human serum using silica-functionalized CdTe quantum dots

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 99454-99460 ◽  
Author(s):  
Dan Li ◽  
Shaojie Jia ◽  
Essy Kouadio Fodjo ◽  
Hu Xu ◽  
Cong Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Human Serum ◽  
Fluorescence Probe ◽  
Cdte Quantum Dots ◽  
Selective Detection ◽  
Turn On ◽  
Highly Sensitive

The hydrophilic carboxyl-capped CdTe@SiO2 quantum dots (SQDs) can served as a “turn-on” photoluminescence (PL) probe for highly sensitive and selective detection of sparfloxacin in human serum.

scholarly journals A novel and fast responsive turn-on fluorescent probe for the highly selective detection of Cd2+ based on photo-induced electron transfer

RSC Advances ◽  
2019 ◽  
Vol 9 (62) ◽  
pp. 36011-36019 ◽  
Author(s):  
Meng-Xia Huang ◽  
Cai-Hua Lv ◽  
Qing-Da Huang ◽  
Jia-Ping Lai ◽  
Hui Sun
Keyword(s):  
Electron Transfer ◽  
Fluorescent Probe ◽  
Fluorescence Probe ◽  
Selective Detection ◽  
Turn On ◽  
Highly Sensitive ◽  
Photo Induced Electron Transfer

A novel, highly sensitive and fast responsive turn-on fluorescence probe ADMPA for Cd2+ was successfully developed based on 2,9-dimethyl-1,10-phenanthroline and o-aminophenol.

Highly sensitive and selective detection of mercury ions based on up-conversion FRET from NaYF4:Yb3+/Er3+ nanophosphors to CdTe quantum dots

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 99099-99106 ◽  
Author(s):  
Shaobo Cui ◽  
Sai Xu ◽  
Hongwei Song ◽  
Wen Xu ◽  
Xu Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Environmental Problems ◽  
Cdte Quantum Dots ◽  
Selective Detection ◽  
Mercury Ions ◽  
Highly Sensitive

The detection of Hg2+ has attracted considerable attention because of the serious health and environmental problems caused by it.

Detection of Glucose in Human Serum Based on Silicon Dot Probe

2020 ◽  
Vol 16 (6) ◽  
pp. 744-752
Author(s):  
Kuan Luo ◽  
Xinyu Jiang
Keyword(s):  
Quantum Dots ◽  
Blood Glucose ◽  
Human Serum ◽  
Organic Dyes ◽  
Limit Of Detection ◽  
Fasting Blood Glucose ◽  
Glucose Biosensor ◽  
Metal Nanoclusters ◽  
Glucose Levels ◽  
Highly Sensitive

Background: Diabetes Mellitus (DM) is a major public metabolic disease that influences 366 million people in the world in 2011, and this number is predicted to rise to 552 million in 2030. DM is clinically diagnosed by a fasting blood glucose that is equal or greater than 7 mM. Therefore, the development of effective glucose biosensor has attracted extensive attention worldwide. Fluorescence- based strategies have sparked tremendous interest due to their rapid response, facile operation, and excellent sensitivity. Many fluorescent compounds have been employed for precise analysis of glucose, including quantum dots, noble metal nanoclusters, up-converting nanoparticles, organic dyes, and composite fluorescent microspheres. Silicon dot as promising quantum dots materials have received extensive attention, owing to their distinct advantages such as biocompatibility, low toxicity and high photostability. Methods: MnO2 nanosheets on the Si nanoparticles (NPs) surface serve as a quencher. Si NPs fluorescence can make a recovery by the addition of H2O2, which can reduce MnO2 to Mn2+, and the glucose can thus be monitored based on the enzymatic conversion of glucose by glucose oxidase to generate H2O2. Therefore, the glucose concentration can be derived by recording the fluorescence recovery spectra of the Si NPs. Results: This probe enabled selective detection of glucose with a linear range of 1-100 μg/mL and a limit of detection of 0.98 μg/mL. Compared with the commercial glucometer, this method showed favorable results and convincing reliability. Conclusion: We have developed a novel method based on MnO2 -nanosheet-modified Si NPs for rapid monitoring of blood glucose levels. By combining the highly sensitive H2O2/MnO2 reaction with the excellent photostability of Si NPs, a highly sensitive, selective, and cost-efficient sensing approach for glucose detection has been designed and applied to monitor glucose levels in human serum with satisfactory results.

Sign in / Sign up

Export Citation Format

Share Document