Fabrication and multifunctional properties of ultrasmall water-soluble tungsten oxide quantum dots

2016 ◽  
Vol 52 (61) ◽  
pp. 9534-9537 ◽  
Author(s):  
Huaping Peng ◽  
Pan Liu ◽  
Danwei Lin ◽  
Yani Deng ◽  
Yun Lei ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Tungsten Oxide ◽  
Water Soluble ◽  
Green Method ◽  
Multifunctional Properties

Novel ultrasmall water-soluble tungsten oxide quantum dots with multifunctional properties have been successfully developed by a facile and green method.

The Synthesis of the Folate Acid Quantum Dots and Its Endocytosis in the Hepatoma Cells Mediated by the Folate Receptor

2019 ◽  
Vol 9 (6) ◽  
pp. 770-777
Author(s):  
Xiao-Li Zhu ◽  
Jing-Cheng Tang ◽  
Bing-Jiu Xu
Keyword(s):  
Quantum Dots ◽  
Folic Acid ◽  
Hepg2 Cells ◽  
Folate Receptor ◽  
Synthetic Medium ◽  
Water Soluble ◽  
Mercaptoacetic Acid ◽  
Green Method ◽  
Cds Qds ◽  
Hepg2 Cell Lines

Objectives: To synthesize folate acid conjugated quantum dots (QDs) by a simple and green method and explore endocytosis of the QD-folic acid conjugates (FA-QDs) into hepG2 cells. Methods: CdS QDs were prepared using stearic acid as synthetic medium, and were conjugated with mercaptoacetic acid (MAA) to be water-soluble. Then folic acid moiety was coupled to the surface of the QDs using EDC (1-ethyl-3-(3-dimethylamino propyl)carbodiimide) as a coupling agent. The CdS QDs and FA-QDs were characterized by X-ray spectroscopy (XRD), transmission electron microscopy (TEM), spectro fluorimetry and infrared spectroscopy. Endocytosis of the FA-QDs into hepG2 cells was observed by confocal microscopy and TEM. Results: TEM shows that the CdS QDs and FA-QDs were spherical in shape and had a diameter of 10 nm. Fluorescence spectrum of the QDs also shows their narrow size distribution. Confocal microscopic and TEM results show that FA-QDs were successfully internalized into the hepG2 cells. In addition, confocal results show that when the cells were first be saturated with excess free FA, the endocytosis of the FA-QDs became less, and CdS QDs that were not conjugated with FA were not able to be internalized into the hepG2 cells. Conclusions: The FA-QDs can be synthesized by a simple and green method and be used to successfully target tumor cells: hepG2 cell lines, which was probably mediated by the FA receptor.

Study of Rabies Protein Antibodies Marked with Water-Soluble Quantum Dots

2013 ◽  
Vol 40 (6) ◽  
pp. 857-861
Author(s):  
Bin ZHAO ◽  
Su-Qing ZHAO ◽  
Li-Hua ZHOU ◽  
Kun ZHANG ◽  
Jun ZHANG
Keyword(s):  
Quantum Dots ◽  
Water Soluble

Synthesis and Surface Functionalization of Water-soluble Quantum Dots

2012 ◽  
Vol 8 (2) ◽  
pp. 202-207 ◽  
Author(s):  
Sonia Bailon-Ruiz ◽  
Luis Alamo-Nole ◽  
Oscar Perales-Perez
Keyword(s):  
Quantum Dots ◽  
Surface Functionalization ◽  
Water Soluble

Z-Scheme Photocarrier Transfer Realized in Tungsten Oxide-Based Photocatalysts by Combining with Bismuth Vanadate Quantum Dots

2021 ◽  
Vol 60 (5) ◽  
pp. 3057-3064
Author(s):  
Bo Liu ◽  
Xiao Jiang ◽  
Xiaolin Jiang ◽  
Yinyi Ma ◽  
Zemin Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Tungsten Oxide ◽  
Bismuth Vanadate

Direct observation of three-photon resonance in water-soluble ZnS quantum dots

2008 ◽  
Vol 92 (13) ◽  
pp. 131114 ◽  
Author(s):  
Jun He ◽  
Gregory D. Scholes ◽  
Yu Long Ang ◽  
Wei Ji ◽  
Cyrus W. J. Beh ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Direct Observation ◽  
Water Soluble ◽  
Photon Resonance

scholarly journals Retraction: Water-soluble multidentate polymers compactly coating Ag2S quantum dots with minimized hydrodynamic size and bright emission tunable from red to second near-infrared region

Nanoscale ◽  
2020 ◽  
Vol 12 (41) ◽  
pp. 21459-21459
Author(s):  
Charlotte Marshall
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Infrared Region ◽  
Water Soluble ◽  
Hydrodynamic Size ◽  
Near Infrared Region ◽  
Ag2s Quantum Dots ◽  
Bright Emission

Retraction of ‘Water-soluble multidentate polymers compactly coating Ag2S quantum dots with minimized hydrodynamic size and bright emission tunable from red to second near-infrared region’ by Rijun Gui et al., Nanoscale, 2014, 6, 5467–5473, DOI: 10.1039/C4NR00282B.

Enhanced photocatalytic activities of TiO2 nanocomposites doped with water-soluble mercapto-capped CdTe quantum dots

2010 ◽  
Vol 101 (1-2) ◽  
pp. 118-129 ◽  
Author(s):  
Yue-Sheng Li ◽  
Feng-Lei Jiang ◽  
Qi Xiao ◽  
Ran Li ◽  
Kan Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Water Soluble ◽  
Cdte Quantum Dots ◽  
Photocatalytic Activities
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