Determination of ζ-potential, charge, and number of organic ligands on the surface of water soluble quantum dots by capillary electrophoresis

2015 ◽  
Vol 36 (6) ◽  
pp. 867-874 ◽  
Author(s):  
Ivona Voráčová ◽  
Karel Klepárník ◽  
Marcela Lišková ◽  
František Foret
Keyword(s):  
Quantum Dots ◽  
Capillary Electrophoresis ◽  
Water Soluble ◽  
Organic Ligands ◽  
Ζ Potential

A highly efficient capillary electrophoresis-based method for size determination of water-soluble CdSe/ZnS core–shell quantum dots

2009 ◽  
Vol 647 (2) ◽  
pp. 219-225 ◽  
Author(s):  
Yong-Qiang Li ◽  
Hai-Qiao Wang ◽  
Jian-Hao Wang ◽  
Li-Yun Guan ◽  
Bi-Feng Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Capillary Electrophoresis ◽  
Water Soluble ◽  
Core Shell ◽  
Size Determination ◽  
Highly Efficient

Rapid determination of melamine in milk using water-soluble CdTe quantum dots as fluorescence probes

2011 ◽  
pp. 1-12 ◽  
Author(s):  
Minwei Zhang† ◽  
Hong Ping† ◽  
Xianyi Cao ◽  
Hongkun Li ◽  
Fengrui Guan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Rapid Determination ◽  
Water Soluble ◽  
Cdte Quantum Dots ◽  
Fluorescence Probes

β-Cyclodextrin functionalized carbon quantum dots as sensors for determination of water-soluble C60 fullerenes in water

The Analyst ◽  
2016 ◽  
Vol 141 (9) ◽  
pp. 2682-2687 ◽  
Author(s):  
Angelina Cayuela ◽  
M. Laura Soriano ◽  
Miguel Valcárcel
Keyword(s):  
Quantum Dots ◽  
Direct Determination ◽  
Carbon Quantum Dots ◽  
Water Soluble ◽  
Soluble C ◽  
Water Soluble C ◽  
C60 Fullerenes

A selective photoluminescence method based on Carbon Quantum Dots (CQDs) functionalized with carboxymethyl-β-cyclodextrin for the direct determination of water-soluble C60 fullerene has been developed.

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.

Determination of potassium ferrocyanide in table salt and salted food using a water-soluble fluorescent silicon quantum dots

2019 ◽  
Vol 288 ◽  
pp. 248-255 ◽  
Author(s):  
Min Na ◽  
Yonglei Chen ◽  
Yangxia Han ◽  
Sudai Ma ◽  
Juanjuan Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Potassium Ferrocyanide ◽  
Water Soluble ◽  
Table Salt ◽  
Silicon Quantum Dots

Enzymatic determination of uric acid using water-soluble CuInS/ZnS quantum dots as a fluorescent probe

2018 ◽  
Vol 185 (11) ◽  
Author(s):  
Fangmei Zhang ◽  
Pinyi Ma ◽  
Xinyu Deng ◽  
Ying Sun ◽  
Xinghua Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Uric Acid ◽  
Fluorescent Probe ◽  
Water Soluble ◽  
Enzymatic Determination

Thin-coated water soluble CdTeS alloyed quantum dots as energy donors for highly efficient FRET

2014 ◽  
Vol 43 (41) ◽  
pp. 15583-15592 ◽  
Author(s):  
Akram Yahia-Ammar ◽  
Aline M. Nonat ◽  
Anne Boos ◽  
Jean-Luc Rehspringer ◽  
Zouhair Asfari ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Chemical Composition ◽  
Water Soluble ◽  
Highly Efficient

A model for the determination of the chemical composition and the size of CdTeS QDs is proposed and confirmed by FRET experiments.

scholarly journals Determination of the mobility of amine- and carboxy-terminated fluospheres and quantum dots by capillary electrophoresis

2016 ◽  
Vol 94 (4) ◽  
pp. 430-435 ◽  
Author(s):  
Amy Tekrony ◽  
David Cramb
Keyword(s):  
Quantum Dots ◽  
Capillary Electrophoresis ◽  
Zeta Potential ◽  
Small Sample ◽  
Particle Type ◽  
Sample Cell ◽  
Zeta Potentials ◽  
Mobility Data

The pharmacokinetics of nanoparticle (NP) theranostics can, in principle, be predicted based on NP size and zeta potential. Zeta potentials are typically measured using bench top zetasizer instruments, which calculate zeta potential based on mobility data collected from solutions in a small sample cell. However, correlations between zeta potentials measured by zetasizer instruments and those calculated from mobilities determined by instruments designed for capillary electrophoresis may not be direct. To that end, mobilities of a variety of NPs were determined by a capillary electrophoresis and used to calculate zeta potentials based on Henry’s equation. The calculated zeta potentials were then compared to zeta potentials measured directly from a zetasizer. It was found that absolute values of the two methods differed, but the relative zeta potential trends per particle type were similar. These trends were demonstrated by data that showed that the zeta potentials measured using a zetasizer correlated highly with zeta potentials determined by capillary electrophoresis.

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