Organometallic synthesis and electrophoretic characterization of high-quality ZnS:Mn/ZnS core/shell nanoparticles for bioanalytical applications

Ehlert, O.; Bücking, Wendelin; Riegler, Jürgen; Merkulov, Alexey; Nann, Thomas

doi:10.1007/s00604-007-0798-8

Cited by 20 publications

(8 citation statements)

References 17 publications

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“…Several analytical techniques, namely laser dynamic light scattering (DLS), laser Doppler electrophoresis, capillary electrophoresis and gel electrophoresis are suitable to characterize the nanocolloids [13][14][15][16][17]. Optical characterization of QDs is usually provided by UV-VIS and photoluminescence spectroscopy, which offers fast, nondestructive and contactless option.…”

Section: Introductionmentioning

confidence: 99%

SDS-PAGE as a Tool for Hydrodynamic Diameter-Dependent Separation of Quantum Dots

et al. 2015

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Section: Introductionmentioning

confidence: 99%

SDS-PAGE as a Tool for Hydrodynamic Diameter-Dependent Separation of Quantum Dots

et al. 2015

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“…The electrophoretic mobility, the colloidal stability, and the coverage with ligands were also measured. They also used ITP with conductivity or UV detection to characterize high‐quality ZnS:Mn/ZnS core/shell NPs . They found that ITP was an alternative technique, which allowed for measuring the electrophoretic mobility of nanocolloids without the influence of size compared with agarose gel electrophoresis or laser doppler electrophoresis.…”

Section: Separation Modes Of Cementioning

confidence: 99%

Characterization and separation of semiconductor quantum dots and their conjugates by capillary electrophoresis

2014

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Semiconductor quantum dots (QDs) are very important luminescent nanomaterials with a wide range of potential applications. Currently, QDs as labeling probes are broadly used in bioassays, including immunoassay, DNA hybridization, and bioimaging, due to their excellent physical and chemical properties, such as broad excitation spectra, narrow and size-dependent emission profiles, long fluorescence life time, and good photostability. The characterization of QDs and their conjugates is crucial for their wide bioapplications. CE has become a powerful tool for the separation and characterization of QDs and their conjugates. In this review, some CE separation models of QDs are first introduced, mainly including CZE, CGE, MEKC, and ITP. And then, some key applications, such as the measurements of size, surface charge, and concentration of QDs and the characterization of QDs conjugates (e.g. QD-protein, QD-DNA, QD-small molecule), are also described. Finally, future perspectives are discussed.

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“…A method for the determination of metabisulfite and hydrosulfite in poultice and decolorant by ITP was developed employing their transformation to stable hydroxymethanesulfinate and hydroxymethanesulfonate by a reaction with formaldehyde (LE: 10 mM HCl, 11 mM imidazole, 0.15% w/v HEC, pH 6.0; TE: 5 mM benzoic acid, 6 mM imidazole, pH 6.5) 69; using contactless conductivity detection, LODs of 2.9 and 3.4 μM for metabisulfite and hydrosulfite, respectively, could be reached. The same technique with conductivity and UV‐absorption detection was used to analyze ZnS nanoparticles (LE: 10 mM HCl, Tris, pH 9.1; TE: 25 mM glycine) 70, gold nanoparticles (LE: 10 mM HCl, 20 mM histidine, pH 5.9; TE: 5 mM glutamic acid or MES) and gold nanoparticles ligated with 11‐mercaptoundecanoic acid (LE: 10 mM HCl, 20 mM Tris, pH 8; TE: 5 mM Na 2 B 4 O 7 ) 71, 72. In the latter case the particles were measured in the form of a mixed zone with glutamic acid; the mobility of the particles was found to be size‐dependent.…”

Section: Analytical Applicationsmentioning

confidence: 99%

Recent progress in analytical capillary ITP

2009

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ITP is an electrophoretic technique that has been attracting constant attention for many years due to its pronounced capability to concentrate trace analytes by several orders of magnitude. In practice, it is used predominantly in capillary format, where the capillaries used have id ranging between 0.02 and 0.8 mm. The volumes of the samples introduced may be up to several tens of microliters and trace analytes diluted in such a volume are concentrated into zones having volumes in the range of picoliters. Moreover, it offers simultaneously efficient separation of the analytes. That is why ITP retains its important position in many current multistage and multidimensional separation schemes where it is used always as the starting step that brings preseparation and concentration of sample components. This article links up previous reviews on the topic and summarizes the progress of analytical capillary ITP since 2006; 90 reviewed papers include theory and methodological novelties as well as analytical applications. Papers using ITP as part of multistage separation schemes are also included.

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Organometallic synthesis and electrophoretic characterization of high-quality ZnS:Mn/ZnS core/shell nanoparticles for bioanalytical applications

Cited by 20 publications

References 17 publications

SDS-PAGE as a Tool for Hydrodynamic Diameter-Dependent Separation of Quantum Dots

SDS-PAGE as a Tool for Hydrodynamic Diameter-Dependent Separation of Quantum Dots

Characterization and separation of semiconductor quantum dots and their conjugates by capillary electrophoresis

Recent progress in analytical capillary ITP

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