Single-step noninjection synthesis of highly luminescent water soluble Cu+ doped CdS quantum dots: application as bio-imaging agents

2013 ◽  
Vol 49 (79) ◽  
pp. 9045 ◽  
Author(s):  
Tongtong Xuan ◽  
Song Wang ◽  
Xiaojun Wang ◽  
Jiaqing Liu ◽  
Jiyao Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Single Step ◽  
Water Soluble ◽  
Imaging Agents ◽  
Cds Quantum Dots ◽  
Bio Imaging

Preparation of water soluble CdSe and CdSe/CdS quantum dots and their uses in imaging of cell and blood capillary

2012 ◽  
Vol 34 (9) ◽  
pp. 1588-1592 ◽  
Author(s):  
Yanjie Bao ◽  
Junjun Li ◽  
Yiting Wang ◽  
Lei Yu ◽  
Jing Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Water Soluble ◽  
Blood Capillary ◽  
Cds Quantum Dots

Determination of Trace Iron in Chinese Herbal Medicine Using CdS Quantum Dots as Fluorescence Probes

2012 ◽  
Vol 455-456 ◽  
pp. 1195-1199
Author(s):  
Yun Long Zeng ◽  
Xia Fei Li ◽  
Chun Ran Tang ◽  
Hao Wen Huang ◽  
Ya Jing Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescence Probe ◽  
Copper Ion ◽  
Water Soluble ◽  
Fluorescence Probes ◽  
Cds Quantum Dots ◽  
Buffer Solution ◽  
Green Protocol ◽  
Quenching Method

A simple A green protocol for synthesis of high quality, water-soluble and biocompatible CdS QDs have been developed in aqueous solution with amylum as stabilizing agent. The QDs were characterized by AMF and spectral methods. A fluorescence quenching method was developed for determination of iron (ΙΙΙ) with water soluble CdS quantum dots (QDs) as fluorescence probe. In pH 8.5 boric acid–borax buffer solution, the QDs show a high selective to ferric ion. The common cations, such as Ca2+, Mg2+, Zn2+, Fe2+ et al, have no effect on interference but copper ion. The fluorescence intensity of the QDs decreased linearly with the iron (QDs ) concentration in the range of 200 μM to 60 nM with a detection limit of 20 nM. It has been applied to determinate of iron in Angelica, Astragalus, Shouwu, ligusticum wallichii and radix rehmanniae recen.

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.

Biomanufacturing of CdS quantum dots

2015 ◽  
Vol 17 (7) ◽  
pp. 3775-3782 ◽  
Author(s):  
Zhou Yang ◽  
Li Lu ◽  
Victoria F. Berard ◽  
Qian He ◽  
Christopher J. Kiely ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Stenotrophomonas Maltophilia ◽  
Water Soluble ◽  
Controlled Synthesis ◽  
Cds Quantum Dots ◽  
Size Controlled

A strain ofStenotrophomonas maltophiliais engineered to achieve size controlled synthesis of water soluble CdS quantum dots.

Synthesis and Characterization of Eu3+-Doped CdS Quantum Dots by a Single-Step Aqueous Method

2016 ◽  
Vol 16 (4) ◽  
pp. 3848-3851 ◽  
Author(s):  
Chunyan Zhou ◽  
Jiahui Song ◽  
Xinguo Zhang ◽  
Lu Sun ◽  
Liya Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Single Step ◽  
Rare Earth Ions ◽  
Cds Quantum Dots ◽  
Enhanced Photoluminescence ◽  
Broadband Emission ◽  
In Doping ◽  
Good Crystallinity ◽  
Potential Use

Eu3+-doped CdS quantum dots (QDs) are successfully synthesized through a straightforward singlepot process in aqueous solution using thioglycolic acid as the capping ligand. The structure, shape, and spectral properties of the QDs are investigated. The obtained CdS:Eu3+ QDs exhibit cubic structures with good crystallinity and approximately sphere-like shapes about 4 nm in diameter. The CdS QDs manifest a broadband emission peak at 600 nm and enhanced Photoluminescence (PL) emission intensity after doping with Eu3+ ions. Given the strong PL intensity and good chromaticity of the sulfide-based QDs, they have potential use in doping rare-earth ions.

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 One-Step Synthesis of Water-Soluble CdS Quantum Dots for Silver-Ion Detection

ACS Omega ◽  
2021 ◽  
Author(s):  
Shen Wang ◽  
Jie Yu ◽  
Pingnan Zhao ◽  
Siyao Guo ◽  
Song Han
Keyword(s):  
Quantum Dots ◽  
Water Soluble ◽  
Silver Ion ◽  
Cds Quantum Dots ◽  
Ion Detection ◽  
One Step
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