Fluorescence Enhancement of Cadmium Selenide Quantum Dots Assembled on Silver Nanoparticles and Its Application to Glucose Detection

Langmuir ◽  
2014 ◽  
Vol 30 (22) ◽  
pp. 6324-6330 ◽  
Author(s):  
Yecang Tang ◽  
Qian Yang ◽  
Ting Wu ◽  
Li Liu ◽  
Yi Ding ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Silver Nanoparticles ◽  
Cadmium Selenide ◽  
Fluorescence Enhancement ◽  
Glucose Detection ◽  
Cadmium Selenide Quantum Dots

PET-RAFT polymerization catalyzed by cadmium selenide quantum dots (QDs): Grafting-from QDs photocatalysts to make polymer nanocomposites

2020 ◽  
Vol 11 (5) ◽  
pp. 1018-1024 ◽  
Author(s):  
Yifan Zhu ◽  
Eilaf Egap
Keyword(s):  
Quantum Dots ◽  
Cadmium Selenide ◽  
Polymer Nanocomposites ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Cdse Qds ◽  
Reversible Addition ◽  
Cadmium Selenide Quantum Dots ◽  
Grafting From ◽  
Chain Transfer Polymerization

We report herein the first example of light-controlled radical reversible addition–fragmentation chain transfer polymerization facilitated by cadmium selenide quantum dots and the grafting-from CdSe QDs to create polymer-QDs nanocomposites.

scholarly journals High Sensitivity Detection of Copper Ions in Oysters Based on the Fluorescence Property of Cadmium Selenide Quantum Dots

Chemosensors ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 47 ◽  
Author(s):  
Jiang ◽  
Lu ◽  
Su ◽  
Feng ◽  
Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cadmium Selenide ◽  
Copper Ions ◽  
Synthesis Method ◽  
High Sensitivity ◽  
Absorption Spectrometry ◽  
Cdse Qds ◽  
Flame Atomic Absorption ◽  
Cadmium Selenide Quantum Dots ◽  
The One

Cadmium selenide (CdSe) quantum dots (QDs) were synthesized by water phase synthesis method using 3-mercaptopropionic acid (3-MPA) as a stabilizer, and they were applied to the detection of copper ions (Cu2+). The results showed that CdSe QDs have excellent selectivity and sensitivity toward Cu2+. The fluorescence intensity of CdSe QDs decreased with the increase of Cu2+ concentration. The linear range was from 30 nM to 3 μM, and the detection limit was 30 nM. Furthermore, CdSe QDs were used for detecting the concentration of Cu2+ in oysters. The content of Cu2+ was 40.91 mg/kg, which was close to the one measured via flame atomic absorption spectrometry (FAAS), and the relative error was 1.81%. Therefore, CdSe QDs have a wide application prospect in the rapid detection of copper ions in food.

Cadmium Selenide Quantum Dots - MWCNTs Nanocomposite Modified Electrode for the Determination of Epinephrine

2014 ◽  
Vol 938 ◽  
pp. 176-181 ◽  
Author(s):  
Arumugam Kalaivani ◽  
Sangilimuthu Sriman Narayanan
Keyword(s):  
Electron Microscopy ◽  
Quantum Dots ◽  
Cadmium Selenide ◽  
Modified Electrode ◽  
Phosphate Buffer Solution ◽  
Electrochemical Characteristics ◽  
Buffer Solution ◽  
Transmission Electron ◽  
Cadmium Selenide Quantum Dots

A novel Cadmium selenide Quantum dots MWCNTs nanocomposite modified electrode was achieved by simple drop casting method and its application towards the quantitative determination of epinephrine. The Cadmium selenide Quantum Dots was characterized by transmission electron microscopy and MWCNT was characterized by scanning electron microscopy. The electrochemical characteristics of the modified electrode were studied using cyclic voltammetry. The voltammetric response of the modified electrode was higher than that of the MWCNT and bare electrodes. The modified electrode exhibits excellent electrocatalytic activity towards the oxidation of epinephrine by enhancing its oxidation current in 0.1M phosphate buffer solution. The determination range of epinephrine is from 0.16 μM to 14 μM and the detection limit was 0.05 μM (S/N = 3). The proposed modified electrode exhibited good stability and reproducibility.

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