Optimized design of a nanostructured SPCE-based multipurpose biosensing platform formed by ferrocene-tethered electrochemically-deposited cauliflower-shaped gold nanoparticles

• Wicem Argoubi,
• Maroua Saadaoui,
• Sami Ben Aoun and
• Noureddine Raouafi

Beilstein J. Nanotechnol. 2015, 6, 1840–1852, doi:10.3762/bjnano.6.187

• biosensor was prepared by simply drop-casting a mixture of the HRP enzyme solution and chitosan as displayed in Figure 1. The chitosan was used as a matrix to retain the enzyme on the nanostructured surface [39]. The stepwise preparation was also characterized using CV and EIS spectroscopy. CV showed an

• ultrapure water and the unmodified gold was blocked by the addition of 5 µL of a 3% BSA solution. The enzyme-based platform was prepared by drop-casting 5 µL of HRP solution (10 mg/mL) onto the ferrocene-modified cfAuNPs-structured electrode. Determination of the concentrations of hIgG and H2O2 in real

Electrical properties and mechanical stability of anchoring groups for single-molecule electronics

• Riccardo Frisenda,
• Simge Tarkuç,
• Elena Galán,
• Mickael L. Perrin,
• Rienk Eelkema,
• Ferdinand C. Grozema and
• Herre S. J. van der Zant

Beilstein J. Nanotechnol. 2015, 6, 1558–1567, doi:10.3762/bjnano.6.159

• tip-shaped electrodes. The vertical displacement of the pushing rod translates in an horizontal displacement in the plane of the electrode with an attenuation factor of 5 · 10−5. Molecules 1–4 were deposited onto the MCBJ device by drop-casting a solution (2 μL of 1 mM in dichloromethane) on the

Electronic interaction in composites of a conjugated polymer and carbon nanotubes: first-principles calculation and photophysical approaches

• Florian Massuyeau,
• Jany Wéry,
• Jean-Luc Duvail,
• Serge Lefrant,
• Abu Yaya,
• Chris Ewels and
• Eric Faulques

Beilstein J. Nanotechnol. 2015, 6, 1138–1144, doi:10.3762/bjnano.6.115

• SWNT in methanol as solvent. PPV–SWNT composite films of 200 nm thickness were obtained with SWNT mass concentrations x = 0–64% by drop casting onto ultraclean quartz substrates followed by thermal conversion under vacuum at 573 K. Time-resolved PL experiments were carried out by exciting the samples

Exploiting the hierarchical morphology of single-walled and multi-walled carbon nanotube films for highly hydrophobic coatings

• Francesco De Nicola,
• Paola Castrucci,
• Manuela Scarselli,
• Francesca Nanni,
• Ilaria Cacciotti and
• Maurizio De Crescenzi

Beilstein J. Nanotechnol. 2015, 6, 353–360, doi:10.3762/bjnano.6.34

• angles of samples was V = 10 μL. Moreover, every contact angle was measured 15 s after drop casting to ensure that the droplet reached its equilibrium position. Scanning electron micrographs of SWCNT (a,c) and MWCNT (b,d) films at different magnifications 200,000× (a,b), and 10,000× (c,d). In the images

Poly(styrene)/oligo(fluorene)-intercalated fluoromica hybrids: synthesis, characterization and self-assembly

• Giuseppe Leone,
• Francesco Galeotti,
• William Porzio,
• Guido Scavia,
• Luisa Barba,
• Gianmichele Arrighetti,
• Giovanni Ricci,
• Chiara Botta and
• Umberto Giovanella

Beilstein J. Nanotechnol. 2014, 5, 2450–2458, doi:10.3762/bjnano.5.254

• PT15 (Figure 3). Thicker films of PT5, PT15 and PT30 prepared by drop casting of toluene solutions, show a distribution of SME aggregates ranging from a few micrometers to a few tens of micrometers. As evidenced by the fluorescence microscope images in Figure 4, the blue emission comes solely from the

• orientation of most of the silicates forming clusters (Figure 4d). Self-assembly We explored further possibilities of organization of these materials by drop casting dilute solutions in carbon disulfide under humid atmosphere. Under these conditions, the fast evaporation of the solvent and its consequent

UHV deposition and characterization of a mononuclear iron(III) β-diketonate complex on Au(111)

• Irene Cimatti,
• Silviya Ninova,
• Valeria Lanzilotto,
• Luigi Malavolti,
• Luca Rigamonti,
• Brunetto Cortigiani,
• Matteo Mannini,
• Elena Magnano,
• Federica Bondino,
• Federico Totti,
• Andrea Cornia and
• Roberta Sessoli

Beilstein J. Nanotechnol. 2014, 5, 2139–2148, doi:10.3762/bjnano.5.223

• high coverages compatible with an ex situ prepared sample cannot be achieved by UHV sublimation, a thick film sample of Fe(dpm)3 was prepared by drop-casting. XAS spectra at the Fe L2,3 edge, acquired at the BACH beamline of the Elettra synchrotron for both circular left (σ+) and circular right (σ

• Au 4f7/2 peak at 80.04 eV. UPS spectra were calibrated such that the Fermi level was located at 0 eV. X-ray absorption spectroscopy The deposition was prepared by drop-casting using a 2 mM dichloromethane solution on a gold film grown on mica. The Fe L2,3 XMCD measurements were performed in total

Imaging the intracellular degradation of biodegradable polymer nanoparticles

• Anne-Kathrin Barthel,
• Martin Dass,
• Melanie Dröge,
• Jens-Michael Cramer,
• Daniela Baumann,
• Markus Urban,
• Katharina Landfester,
• Volker Mailänder and
• Ingo Lieberwirth

Beilstein J. Nanotechnol. 2014, 5, 1905–1917, doi:10.3762/bjnano.5.201

• decoration quality, pristine magnetite-labeled PLLA nanoparticles were subjected to TEM investigation. Figure 3 shows TEM micrographs of the magnetite-decorated PLLA nanoparticles prepared by either drop casting on a carbon support film and additional carbon evaporation (Figure 3A), or prepared by high

• membrane; Green: PLLA nanoparticles. TEM bright field micrographs of a dispersion of magnetite-decorated PLLA nanoparticles prepared by drop casting and subsequent carbon evaporation (A) and by high pressure freezing (HPF) followed by freeze substitution and microtomy (B). The inset of B shows the

Controlling the dispersion of supported polyoxometalate heterogeneous catalysts: impact of hybridization and the role of hydrophilicity–hydrophobicity balance and supramolecularity

• Gijo Raj,
• Colas Swalus,
• Eglantine Arendt,
• Pierre Eloy,
• Michel Devillers and
• Eric M. Gaigneaux

Beilstein J. Nanotechnol. 2014, 5, 1749–1759, doi:10.3762/bjnano.5.185

• driven through the electrostatic interaction of POM anions with the positively charged DODA surfactant. Firstly, we study the DODA–POM hybrids deposited on HOPG. Drop-casting of a small amount (about 9.5 µL) of a very dilute solution (0.025 g·L−1) allows for the formation of molecular layers that are of

Highly NO₂ sensitive caesium doped graphene oxide conductometric sensors

• Carlo Piloto,
• Marco Notarianni,
• Mahnaz Shafiei,
• Elena Taran,
• Dilini Galpaya,
• Cheng Yan and
• Nunzio Motta

Beilstein J. Nanotechnol. 2014, 5, 1073–1081, doi:10.3762/bjnano.5.120

• studied by varying the gas concentration. The developed GO-Cs sensor shows a higher response to NO2 than the pristine GO based sensor due to the oxygen functional groups. The detection limit measured with GO-Cs sensor is ≈90 ppb. Keywords: caesium; conductometric; doping; drop casting; gas sensor

• polyvinylidene fluoride membrane (0.2 μm). The precipitate was then added to water (30 mL) and filtered. The process was repeated twice to obtain dark solid GO-Cs. Finally, the gas sensors were fabricated by drop casting of the prepared GO and GO-Cs materials onto 2 × 2 mm2 transducers and then they were placed

Optical and structural characterization of oleic acid-stabilized CdTe nanocrystals for solution thin film processing

• Claudio Davet Gutiérrez-Lazos,
• Mauricio Ortega-López,
• Manuel A. Pérez-Guzmán,
• A. Mauricio Espinoza-Rivas,
• Francisco Solís-Pomar,
• Rebeca Ortega-Amaya,
• L. Gerardo Silva-Vidaurri,
• Virginia C. Castro-Peña and
• Eduardo Pérez-Tijerina

Beilstein J. Nanotechnol. 2014, 5, 881–886, doi:10.3762/bjnano.5.100

• crystal structure, which make them very attractive in this technological area. Thin films deposition techniques such as drop-casting [17], screen printing [18], and ink jet printing [19], are currently used to fabricate electronic devices on great variety of substrates, either rigid or flexible, looking

• for preserve their size effects [20][21][22]. All of these techniques need ink-like stable dispersions comprising functionalized nanomaterials dispersed in a convenient solvent. Drop-casting offers a cost efficient production of photovoltaic semiconductor thin films. Nevertheless, depending on the

• deposited on glass substrates via drop-casting technique without annealing. For absorbance characterization, a liquid sample processed by the size-separation technique was analyzed and for Raman measurements, the same sample but deposited by dripping on glass substrate was studied. TEM characterization

Extracellular biosynthesis of gadolinium oxide (Gd₂O₃) nanoparticles, their biodistribution and bioconjugation with the chemically modified anticancer drug taxol

• Shadab Ali Khan,
• Sanjay Gambhir and
• Absar Ahmad

Beilstein J. Nanotechnol. 2014, 5, 249–257, doi:10.3762/bjnano.5.27

• measurement was carried out on a Shimadzu dual-beam spectrophotometer (model UV-1601 PC) operated at a resolution of 1 nm. Transmission electron microscopy (TEM) TEM analyses of gadolinium oxide nanoparticles were carried out on a JEOL model 1200 EX operated at 80 kV. Samples were prepared by drop-casting the

• drop-casting the particles (suspended in water) on carbon coated copper grid. The selected area electron diffraction (SAED) pattern analysis was carried out on the same grid. X-ray diffraction (XRD) X-ray diffraction (XRD) measurements of biosynthesized Gd2O3 nanoparticles were carried out by coating

Platinum nanoparticles from size adjusted functional colloidal particles generated by a seeded emulsion polymerization process

• Nicolas Vogel,
• Ulrich Ziener,
• Achim Manzke,
• Alfred Plettl,
• Paul Ziemann,
• Johannes Biskupek,
• Clemens K. Weiss and
• Katharina Landfester

Beilstein J. Nanotechnol. 2011, 2, 459–472, doi:10.3762/bjnano.2.50

• ) Addition of ethanol to the water phase. c) Addition of methanol to the continuous water phase. A non-conventional lithographic process is used to produce arrays of Pt NPs from platinum-acetylacetonate containing polymer particles on top of a Si wafer. a) Colloidal monolayer formed by drop casting of seeded

Fabrication and spectroscopic studies on highly luminescent CdSe/CdS nanorod polymer composites

• Jana Bomm,
• Andreas Büchtemann,
• Angela Fiore,
• Liberato Manna,
• James H. Nelson,
• Diana Hill and
• Wilfried G. J. H. M. van Sark

Beilstein J. Nanotechnol. 2010, 1, 94–100, doi:10.3762/bjnano.1.11

• free drop-casting process. Core/shell NRs were chosen as they exhibit higher stability against photooxidation and chemical attack by radicals [2][9]. The band-gap within a type-I core/shell nanocrystal gradually increases from the inside to the outside [2][10]. In our first method, where radicals are

• amount of cross-linker either flexible (<20 wt % EGDM) or rigid nanocomposites could be fabricated. In our second method we fabricated thin polymer films using a radical free drop-casting process. Cellulose triacetate (CTA) was chosen as polymer because of its high transparency, hydrophobicity and