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Search for "dynamic light scattering (DLS)" in Full Text gives 163 result(s) in Beilstein Journal of Nanotechnology.

In vitro interaction of colloidal nanoparticles with mammalian cells: What have we learned thus far?

  • Moritz Nazarenus,
  • Qian Zhang,
  • Mahmoud G. Soliman,
  • Pablo del Pino,
  • Beatriz Pelaz,
  • Susana Carregal-Romero,
  • Joanna Rejman,
  • Barbara Rothen-Rutishauser,
  • Martin J. D. Clift,
  • Reinhard Zellner,
  • G. Ulrich Nienhaus,
  • James B. Delehanty,
  • Igor L. Medintz and
  • Wolfgang J. Parak

Beilstein J. Nanotechnol. 2014, 5, 1477–1490, doi:10.3762/bjnano.5.161

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  • determined with TEM. There are several techniques for determining the hydrodynamic diameters of NPs [108], of which dynamic light scattering (DLS) might be the most common approach. All techniques have their limitations, and it is always helpful to know the measuring principle they are based on. DLS, for
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Published 09 Sep 2014

The cell-type specific uptake of polymer-coated or micelle-embedded QDs and SPIOs does not provoke an acute pro-inflammatory response in the liver

  • Markus Heine,
  • Alexander Bartelt,
  • Oliver T. Bruns,
  • Denise Bargheer,
  • Artur Giemsa,
  • Barbara Freund,
  • Ludger Scheja,
  • Christian Waurisch,
  • Alexander Eychmüller,
  • Rudolph Reimer,
  • Horst Weller,
  • Peter Nielsen and
  • Joerg Heeren

Beilstein J. Nanotechnol. 2014, 5, 1432–1440, doi:10.3762/bjnano.5.155

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  • through a 0.45, 0.2, and 0.1 μm Millipore filter. Based on dynamic light scattering (DLS) measurements, the size of polymer-coated nanocrystals is 25 nm. These polymer-coated nanoparticles are negatively charged due to the formation of carboxyl groups at the surface. Labelling of lipid micelles with
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Published 02 Sep 2014

The protein corona protects against size- and dose-dependent toxicity of amorphous silica nanoparticles

  • Dominic Docter,
  • Christoph Bantz,
  • Dana Westmeier,
  • Hajo J. Galla,
  • Qiangbin Wang,
  • James C. Kirkpatrick,
  • Peter Nielsen,
  • Michael Maskos and
  • Roland H. Stauber

Beilstein J. Nanotechnol. 2014, 5, 1380–1392, doi:10.3762/bjnano.5.151

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  • % fetal calf serum (FCS). According to dynamic light scattering (DLS) and zeta potential measurements, all ASP display the expected hydrodynamic diameter and carry negative surface charges in water, as reflected by their negative zeta potential (Table 1). As the highest absolute values for zeta potential
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Published 27 Aug 2014

Mimicking exposures to acute and lifetime concentrations of inhaled silver nanoparticles by two different in vitro approaches

  • Fabian Herzog,
  • Kateryna Loza,
  • Sandor Balog,
  • Martin J. D. Clift,
  • Matthias Epple,
  • Peter Gehr,
  • Alke Petri-Fink and
  • Barbara Rothen-Rutishauser

Beilstein J. Nanotechnol. 2014, 5, 1357–1370, doi:10.3762/bjnano.5.149

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  • in order to reveal a greater insight into the effect of Ag NP toxicity. Results Particle characterisation PVP-coated Ag NPs were characterised by scanning electron microscopy (SEM) and dynamic light scattering (DLS). Figure 1A shows a representative SEM image of particles deposited on a silicon wafer
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Published 26 Aug 2014

Optimizing the synthesis of CdS/ZnS core/shell semiconductor nanocrystals for bioimaging applications

  • Li-wei Liu,
  • Si-yi Hu,
  • Ying Pan,
  • Jia-qi Zhang,
  • Yue-shu Feng and
  • Xi-he Zhang

Beilstein J. Nanotechnol. 2014, 5, 919–926, doi:10.3762/bjnano.5.105

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  • producing water-dispersible nanocrystals that should easily be applicable in biology. Effect of pH on the hydrodynamic diameter of the QDs The dynamic light scattering (DLS) technique was used to measure the hydrodynamic diameter profile of the micelle-encapsulated nanocrystals. For the purposes of the DLS
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Published 27 Jun 2014

Manipulation of isolated brain nerve terminals by an external magnetic field using D-mannose-coated γ-Fe2O3 nano-sized particles and assessment of their effects on glutamate transport

  • Tatiana Borisova,
  • Natalia Krisanova,
  • Arsenii Borуsov,
  • Roman Sivko,
  • Ludmila Ostapchenko,
  • Michal Babic and
  • Daniel Horak

Beilstein J. Nanotechnol. 2014, 5, 778–788, doi:10.3762/bjnano.5.90

Graphical Abstract
  • of particles with the diameter Di) documents a moderately broad particle size distribution (Table 1). The obtained iron oxide nanoparticle colloids were also investigated by dynamic light scattering (DLS). The hydrodynamic diameter (Dh) of the nanoparticles calculated from DLS was about 10 times
  • 200 CX transmission electron microscope (TEM). The size was calculated by using the Atlas program (Tescan, Digital Microscopy Imaging, Brno, Czech Republic). The hydrodynamic diameter Dh (z-average) and polydispersity as a measure of the particle size distribution were determined by dynamic light
  • scattering (DLS) with an Autosizer Lo-C (Malvern Instruments, UK). The modification of the nanoparticle surface with D-mannose was analyzed using a Nicolet Impact 400 Fourier transformation infrared (FTIR) spectrometer in water-purged surrounding with a DTGS detector. The spectra were measured by ATR
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Published 04 Jun 2014

Cyclodextrin-poly(ε-caprolactone) based nanoparticles able to complex phenolphthalein and adamantyl carboxylate

  • Daniela Ailincai and
  • Helmut Ritter

Beilstein J. Nanotechnol. 2014, 5, 651–657, doi:10.3762/bjnano.5.76

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  • HEMAbio 100 (MZ-Analysentechnik), pump, degasser and autosampler (Agilent 1200, Agilent technologies). The eluent was ultrapure water at a flow rate of 1 mL/min. The molecular weight was calculated with Astra5 software from static-light-scattering data by using the Zimm model. Dynamic light scattering
  • (DLS) experiments were carried out with a Malvern Zetasizer Nano ZS ZEN 3600 at a temperature of 25 °C. The particle size distribution is derived from a deconvolution of the measured intensity autocorrelation function of the sample by a general purpose method, i.e., the non-negative least squares
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Published 16 May 2014

In vitro toxicity and bioimaging studies of gold nanorods formulations coated with biofunctional thiol-PEG molecules and Pluronic block copolymers

  • Tianxun Gong,
  • Douglas Goh,
  • Malini Olivo and
  • Ken-Tye Yong

Beilstein J. Nanotechnol. 2014, 5, 546–553, doi:10.3762/bjnano.5.64

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  • , transmission electron microscopy (TEM), cell viability assay, dynamic light scattering (DLS), and dark-field imaging microscopy. The non-specific uptake of these AuNRs by cells was also studied under dark-field microscopy. Our work demonstrates that the coating of AuNRs surfaces with PEG-SH or PEO–PPO–PEO
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Published 30 Apr 2014

One pot synthesis of silver nanoparticles using a cyclodextrin containing polymer as reductant and stabilizer

  • Arkadius Maciollek and
  • Helmut Ritter

Beilstein J. Nanotechnol. 2014, 5, 380–385, doi:10.3762/bjnano.5.44

Graphical Abstract
  • –visible spectrophotometer equipped with a Thermo Scientific CD10 Heating Circulator bath. Fluorescence spectra were recorded on a Perkin Elmer LS55 luminescence spectrometer. Zeta Potential and dynamic light scattering (DLS) experiments were carried out with a Malvern Zetasizer Nano; ZS ZEN 3600 at a
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Published 31 Mar 2014

Morphological characterization of fullerene–androsterone conjugates

  • Alberto Ruiz,
  • Margarita Suárez,
  • Nazario Martin,
  • Fernando Albericio and
  • Hortensia Rodríguez

Beilstein J. Nanotechnol. 2014, 5, 374–379, doi:10.3762/bjnano.5.43

Graphical Abstract
  • , respectively. The morphology and particle size in aqueous solution were determined by transmission electron microscopy (TEM) and dynamic light scattering (DLS), with satisfactory agreement between both techniques. In general, these fullerene derivatives are shown to organize into spherical nano-scale
  • report on the morphological characterization of four fullerene–androsterone conjugates in water. The morphology and particle size of the C60–androsterone hybrids in aqueous solution were determined by transmission electron microscopy (TEM) and dynamic light scattering (DLS). Results and Discussion The
  • of the difference in hydrophilicity of the androsterone moieties in both diasteromeric pairs. The presence of a carbonyl group in Ia,b instead of a less polar group such as acetoxy in IIa,b, promoted the formation of smaller vesicles. Dynamic light scattering DLS measurements gave further information
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Published 28 Mar 2014

Near-infrared dye loaded polymeric nanoparticles for cancer imaging and therapy and cellular response after laser-induced heating

  • Tingjun Lei,
  • Alicia Fernandez-Fernandez,
  • Romila Manchanda,
  • Yen-Chih Huang and
  • Anthony J. McGoron

Beilstein J. Nanotechnol. 2014, 5, 313–322, doi:10.3762/bjnano.5.35

Graphical Abstract
  • diameters of void PGMD NPs and IR820-PGMD NPs (see dynamic light scattering (DLS) measurements in Figure S1, Supporting Information File 1) are 90 ± 18.2 nm, and 108 ± 7.4 nm (mean ± SD) respectively. The shape and size of IR820-PGMD NPs were also confirmed with scanning electron microscopy (SEM) imaging
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Published 18 Mar 2014

Nanoscopic surfactant behavior of the porin MspA in aqueous media

  • Ayomi S. Perera,
  • Hongwang Wang,
  • Tej B. Shrestha,
  • Deryl L. Troyer and
  • Stefan H. Bossmann

Beilstein J. Nanotechnol. 2013, 4, 278–284, doi:10.3762/bjnano.4.30

Graphical Abstract
  • of the dynamics of several proteins has been studied by Förster resonance energy transfer (FRET) [15][16][17]. This study was intended to demonstrate the potential of using dynamic light scattering (DLS) and the measurement of zeta potentials when studying the supramolecular aggregation of proteins
  • , measured by dynamic light scattering (DLS): blue: MspA (1.688 × 10−5 mg·mL−1) in (5 × 10−5)× PBS; red: MspA (1.688 × 10−5 mg·mL−1) in 1× PBS. The relative experimental error in diameter has been determined to be ±8 nm. Typical polydispersities of the formed supramolecular aggregates are provided in
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Published 25 Apr 2013

Magnetic-Fe/Fe3O4-nanoparticle-bound SN38 as carboxylesterase-cleavable prodrug for the delivery to tumors within monocytes/macrophages

  • Hongwang Wang,
  • Tej B. Shrestha,
  • Matthew T. Basel,
  • Raj K. Dani,
  • Gwi-Moon Seo,
  • Sivasai Balivada,
  • Marla M. Pyle,
  • Heidy Prock,
  • Olga B. Koper,
  • Prem S. Thapa,
  • David Moore,
  • Ping Li,
  • Viktor Chikan,
  • Deryl L. Troyer and
  • Stefan H. Bossmann

Beilstein J. Nanotechnol. 2012, 3, 444–455, doi:10.3762/bjnano.3.51

Graphical Abstract
  • remained virtually unchanged even after the MNP-SN38 was exposed to air for two weeks at room temperature. The SN38-loaded Fe/Fe3O4 magnetic nanoparticles can be easily dispersed in pH 7.4 PBS buffer (up to 30 mg/mL). The dynamic light scattering (DLS) shows that the hydrodynamic diameter of the
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Published 13 Jun 2012
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