Facile fabrication of OA-POSS modified near-infrared-emitting CdSeTe alloyed quantum dots and their bioapplications

2014 ◽  
Vol 38 (7) ◽  
pp. 3242-3249 ◽  
Author(s):  
Xue Zhao ◽  
Weijia Zhang ◽  
Yongzhong Wu ◽  
Hongzhi Liu ◽  
Xiaopeng Hao
Keyword(s):  
Quantum Dots ◽  
Aqueous Medium ◽  
Near Infrared ◽  
Cell Imaging ◽  
Siha Cell ◽  
Facile Fabrication

Highly biocompatible near-infrared-emitting OA-POSS modified CdSeTe QDs were fabricated in aqueous medium and were successfully applied to SiHa cell imaging.

scholarly journals Time-gated cell imaging using long lifetime near-infrared-emitting quantum dots for autofluorescence rejection

2014 ◽  
Vol 19 (5) ◽  
pp. 051208 ◽  
Author(s):  
Sophie Bouccara ◽  
Alexandra Fragola ◽  
Emerson Giovanelli ◽  
Gary Sitbon ◽  
Nicolas Lequeux ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Cell Imaging ◽  
Long Lifetime

Assaying of Cu 2+ with Near‐infrared L‐cysteine‐capped CdSeTe/CdS Quantum Dots and its effect on cell imaging

Luminescence ◽  
2021 ◽  
Author(s):  
Huan Zhang ◽  
Zhenzhen Li ◽  
Huaying Huang ◽  
Si Ouyang ◽  
Yiqing Deng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Cell Imaging ◽  
Cds Quantum Dots

Synthesis of water-soluble PbSe quantum dots

2008 ◽  
Vol 23 (4) ◽  
pp. 899-903 ◽  
Author(s):  
Lioz Etgar ◽  
Efrat Lifshitz ◽  
Rina Tannenbaum
Keyword(s):  
Quantum Dots ◽  
Aqueous Medium ◽  
Size Distribution ◽  
Near Infrared ◽  
Water Environment ◽  
Water Soluble ◽  
Surrounding Water ◽  
Uniform Size ◽  
Transmission Electron ◽  
Stabilizing Ligands

Water-soluble PbSe semiconductor quantum dots (QDs) with near-infrared absorption of 1100–2520 nm (corresponding to a diameter of 3–13 nm) were synthesized using 2-aminoethanthiol (AET). The oleic acid-stabilizing ligands used in the traditional synthesis of PbSe were exchanged with the 2-AET ligands, which promoted the solubilization of the QDs in an aqueous medium. This occurred due to the attraction of the surrounding water molecules to the exposed amino group, thus allowing the particles to reside in the water environment. The water-soluble PbSe QDs have very narrow size distribution (σ ≈ 4.5–5.5%). Transmission electron microscopy, spectrophotometric measurements, and Fourier transform infrared spectroscopy indicate that the morphology, size, size distribution, and chemical composition of the PbSe QDs remained unchanged during the transfer to an aqueous medium. In conclusion, the ability to synthesize water-soluble PbSe QDs with stable properties and uniform size distribution will allow them to have substantial advantages for biological applications such as biosensors and drug delivery.

Retracted Article: Facile fabrication of water-dispersible AgInS2 quantum dots and mesoporous AgInS2 nanospheres with visible photoluminescence

RSC Advances ◽  
2015 ◽  
Vol 5 (84) ◽  
pp. 68287-68292 ◽  
Author(s):  
Hui Jin ◽  
Rijun Gui ◽  
Zonghua Wang ◽  
Jianfei Xia ◽  
Min Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Water Dispersible ◽  
Visible Photoluminescence ◽  
Retracted Article ◽  
Facile Fabrication ◽  
Facile Preparation

This article reported the facile preparation of water-dispersible near-infrared-emitting AgInS2 quantum dots and mesoporous AgInS2 nanospheres with visible photoluminescence.

Synthesis of Water Soluble PbSe Quantum Dots

2006 ◽  
Vol 959 ◽  
Author(s):  
Lioz Etgar ◽  
Efrat Lifshitz ◽  
Rina Tannenbaum
Keyword(s):  
Quantum Dots ◽  
Aqueous Medium ◽  
Size Distribution ◽  
Near Infrared ◽  
Water Environment ◽  
Water Soluble ◽  
Surrounding Water ◽  
Uniform Size ◽  
Transmission Electron ◽  
Stabilizing Ligands

ABSTRACTWater-soluble PbSe semiconductor quantum dots (QDs) with near-infrared absorption of 1100-2520 nm (corresponding to a diameter of 3-13 nm) were synthesized using 2-aminoethanthiol. The oleic acid stabilizing ligands used in the traditional synthesis of PbSe were exchanged with the 2-aminoethanethiol (AET) ligands, which promoted the solubilization of the QDs in an aqueous medium. This occurred due to the attraction of the surrounding water molecules to the exposed amino-group, thus allowing the particles to reside in the water environment. The water-soluble PbSe QDs have very narrow size distribution (σ ≈ 4.5-5.5%). Transmission electron microscopy (TEM), spectrophotometric measurements, and Fourier transform infrared (FTIR) spectroscopy indicate that the morphology, size, size distribution and chemical composition of the PbSe QDs remained unchanged during the transfer to an aqueous medium. In conclusion, the ability to synthesize water soluble PbSe QDs with stable properties and uniform size distribution will allow them to have substantial advantages for biological applications such as biosensors and drug delivery.

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