scholarly journals Synthesis, Characterization and Biological Applications of Water-Soluble ZnO Quantum Dots

Nanomaterials ◽  
10.5772/27238 ◽  
2011 ◽  
Author(s):  
Raphael Schneider ◽  
Lavinia Balan ◽  
Fadi Aldeek
Keyword(s):  
Quantum Dots ◽  
Water Soluble ◽  
Biological Applications ◽  
Zno Quantum Dots

Synthesis and characterization of water-soluble ZnO quantum dots prepared through PEG-siloxane coating

2008 ◽  
Vol 32 (8) ◽  
pp. 1388 ◽  
Author(s):  
Ralph-Olivier Moussodia ◽  
Lavinia Balan ◽  
Raphaël Schneider
Keyword(s):  
Quantum Dots ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Zno Quantum Dots

scholarly journals In Situ Preparation of Amphibious ZnO Quantum Dots with Blue Fluorescence Based on Hyperbranched Polymers and their Application in Bio-Imaging

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 144 ◽  
Author(s):  
Gaiying Lei ◽  
Shu Yang ◽  
Ranran Cao ◽  
Peng Zhou ◽  
Han Peng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Gene Transfection ◽  
Heating Time ◽  
Water Soluble ◽  
Molar Ratio ◽  
Quantum Yields ◽  
Blue Fluorescence ◽  
In Situ Preparation ◽  
Bio Imaging ◽  
Zno Quantum Dots

A new strategy for preparing amphibious ZnO quantum dots (QDs) with blue fluorescence within hyper-branched poly(ethylenimine)s (HPEI) was proposed in this paper. By changing [Zn2+]/[OH−] molar ratio and heating time, ZnO QDs with a quantum yields (QY) of 30% in ethanol were obtained. Benefiting from the amphibious property of HPEI, the ZnO/HPEI nanocomposites in ethanol could be dissolved in chloroform and water, acquiring a QY of 53%, chloroform and 11% in water. By this strategy, the ZnO/HPEI nano-composites could be applied in not only in optoelectronics, but also biomedical fields (such as bio-imaging and gene transfection). The bio-imaging application of water-soluble ZnO/HPEI nanocomposites was investigated and it was found that they could easily be endocytosed by the COS-7 cells, without transfection reagent, and they exhibited excellent biological imaging behavior.

Tuning optical properties of water-soluble CdTe quantum dots for biological applications

2017 ◽  
Vol 19 (2) ◽  
Author(s):  
Anne S. Schulze ◽  
Isabella Tavernaro ◽  
Friederike Machka ◽  
Olga Dakischew ◽  
Katrin S. Lips ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Water Soluble ◽  
Cdte Quantum Dots ◽  
Biological Applications

A new fluorescent sensor for detecting p-nitrophenol based on β-cyclodextrin-capped ZnO quantum dots

RSC Advances ◽  
2016 ◽  
Vol 6 (89) ◽  
pp. 86061-86067 ◽  
Author(s):  
Shuo Geng ◽  
Shu Min Lin ◽  
Shi Gang Liu ◽  
Nian Bing Li ◽  
Hong Qun Luo
Keyword(s):  
Quantum Dots ◽  
Fluorescent Sensor ◽  
Water Soluble ◽  
Quenching Mechanism ◽  
Zno Quantum Dots ◽  
Zno Qds

Water-soluble fluorescent β-cyclodextrin-capped ZnO QDs were synthesized and used to detect p-NP, and the quenching mechanism was discussed.

Synthesis and optical properties of water soluble CdSe/CdS quantum dots for biological applications

2012 ◽  
Vol 3 (2) ◽  
pp. 025017 ◽  
Author(s):  
Viet Ha Chu ◽  
Thi Ha Lien Nghiem ◽  
Tien Ha Le ◽  
Dinh Lam Vu ◽  
Hong Nhung Tran ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Water Soluble ◽  
Biological Applications ◽  
Cds Quantum Dots

scholarly journals Optical Properties andIn VitroBiological Studies of Oligonucleotide-Modified Quantum Dots

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Valérie A. Gérard ◽  
Mark Freeley ◽  
Eric Defrancq ◽  
Anatoly V. Fedorov ◽  
Yurii K. Gun’ko
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Biological Imaging ◽  
Water Soluble ◽  
Biological Applications ◽  
Potential Applications ◽  
Biochemical Mechanisms

Water-soluble semiconducting nanocrystals or quantum dots (QDs) have attracted much interest in recent years due to their tuneable emission and potential applications in photonics and biological imaging. Fluorescence resonance energy transfer (FRET) processes are very important for elucidating biochemical mechanismsin vitro, and QDs constitute an excellent substrate for this purpose. In this work, new oligonucleotide-functionalised CdTe-based QDs were prepared, characterised and biologically tested. These QDs demonstrated interesting optical properties as well as remarkablein vitrobehaviour and potential for a range of biological applications.

Blue Fluorescent Quantum Dots-Based Probe for Detection of Influenza B Virus

2011 ◽  
Vol 365 ◽  
pp. 18-22
Author(s):  
Jun Lin Wen ◽  
Dai Gui He ◽  
Su Qing Zhao
Keyword(s):  
Quantum Dots ◽  
Pathogenic Bacteria ◽  
Polyacrylamide Gel Electrophoresis ◽  
Sodium Dodecyl ◽  
Viral Disease ◽  
Water Soluble ◽  
Influenza B Virus ◽  
Influenza B ◽  
B Virus ◽  
Zno Quantum Dots

Influenza is a common acute viral disease that has caused massive harm to human, so a rapid pathogen-detecting method is required for monitoring the status of the disease. Quantum dots are promising emerging fluorescent probe for diagnostic assay. In this work, water soluble ZnO quantum dots were covalently conjugated to rabbit anti-chicken IgY antibody to prepare the quantum dots-linked secondary antibody. The conjugate was characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and fluorescence spectrophotometer. Fluorescent quantum dots-based immunosorbent assay was conducted to determine the concentration of influenza B virus. We found that rabbit anti-chicken IgY antibody augmented its molecular weight while coupled to ZnO quantum dots, but the emission spectrum didn’t change. More importantly, the luminescence intensity of QDs correlated to viral concentration in a linear relationship. These results may suggest a potential new approach for quantifying virus, pathogenic bacteria and toxic molecule.

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