The convenient preparation of stable aryl-coated zerovalent iron nanoparticles

• Olga A. Guselnikova,
• Andrey I. Galanov,
• Anton K. Gutakovskii and
• Pavel S. Postnikov

Beilstein J. Nanotechnol. 2015, 6, 1192–1198, doi:10.3762/bjnano.6.121

• using diazonium salts have been published [19][20]. Generally one of the following methods is used to synthesize carbon-coated NPs: reducing flame spray synthesis, flame aerosol synthesis, chemical vapor deposition, etc. However, these procedures require special equipment or techniques [21]. One of the

Simulation tool for assessing the release and environmental distribution of nanomaterials

• Haoyang Haven Liu,
• Muhammad Bilal,
• Anastasiya Lazareva,
• Arturo Keller and
• Yoram Cohen

Beilstein J. Nanotechnol. 2015, 6, 938–951, doi:10.3762/bjnano.6.97

• to water was greater relative to air (Supporting Information File 1, Figure S5, Table S5), the majority of ENM mass accumulated in the sediment (right upper subplot). The ENM mass distribution in air among the particle size fractions of ambient aerosol is shown to follow the expected tri-modal

Anticancer efficacy of a supramolecular complex of a 2-diethylaminoethyl–dextran–MMA graft copolymer and paclitaxel used as an artificial enzyme

• Yasuhiko Onishi,
• Yuki Eshita,
• Rui-Cheng Ji,
• Masayasu Onishi,
• Takashi Kobayashi,
• Masaaki Mizuno,
• Jun Yoshida and
• Naoji Kubota

Beilstein J. Nanotechnol. 2014, 5, 2293–2307, doi:10.3762/bjnano.5.238

• structure is stabilized at less than the critical micelle concentration. It was reported recently that the administration of DDMC as an aerosol [25] and the use of DDMC/p53 in intratumoral gene therapy [26] were effective. DDMC is very suitable for experiments using targeted siRNA or miRNA transfection in

Silica nanoparticles are less toxic to human lung cells when deposited at the air–liquid interface compared to conventional submerged exposure

• Alicja Panas,
• Andreas Comouth,
• Harald Saathoff,
• Thomas Leisner,
• Marco Al-Rawi,
• Michael Simon,
• Gunnar Seemann,
• Olaf Dössel,
• Sonja Mülhopt,
• Hanns-Rudolf Paur,
• Susanne Fritsch-Decker,
• Carsten Weiss and
• Silvia Diabaté

Beilstein J. Nanotechnol. 2014, 5, 1590–1602, doi:10.3762/bjnano.5.171

• concentrations were generated by using a commercial electrospray generator or an atomizer. Only the electrospray method allowed for the generation of an aerosol containing monodisperse NPs. However, the deposited mass and surface dose of the particles was too low to induce cellular responses. Therefore, we

• generated the aerosol with an atomizer which supplied agglomerates and thus allowed a particle deposition with a three orders of magnitude higher mass and of surface doses on lung cells that induced significant biological effects. The deposited dose was estimated and independently validated by measurements

• dependent on the exposure method. Keywords: aerosol; air–liquid interface; dose; silica nanoparticles; toxicity; Introduction Amorphous SiO2 nanoparticles (NPs) are regarded as only little pathogenic. However, it has been shown that the inhalation of silica NPs induces transient inflammation in rats [1][2

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

• ][37][38]. However, they do not reflect real-life conditions in the lung when Ag NPs are inhaled as an aerosol. Therefore, our group has developed and evaluated a sophisticated 3D model of the human epithelial alveolar/airway barrier in vitro, which is composed of epithelial cells, human monocyte

• -derived macrophages (MDMs) and dendritic cells (MDDCs) [39]. The model is reflecting a realistic cellular scenario in the lung, as it is designed for direct exposure of cells to an aerosol [40]. Together with a dose-controlled air–liquid interface cell exposure (ALICE) system [41] the possible adverse

• (mainly rodents) are used for inhalation [35][52][53][54] or instillation [55][56] of Ag NPs, and most recently also ALI exposures of lung cell cultures have emerged [41][57]. Due to the complexity of aerosol generation, measuring on-line the deposited NP dose and more sophisticated co-culture systems

Purification of ethanol for highly sensitive self-assembly experiments

• Kathrin Barbe,
• Martin Kind,
• Christian Pfeiffer and
• Andreas Terfort

Beilstein J. Nanotechnol. 2014, 5, 1254–1260, doi:10.3762/bjnano.5.139

• the material transport by aerosol formation [42][43]. As can be seen in Figure 3, trace G, ethanol which has been purified by treatment with gold-NP impregnated zeolite and subsequent distillation is the only sample that causes no detectable resistivity change and thus can be assumed to be free from

• 0.1 mmol Au per gram of zeolite (pyrolysis temperature of 773 K). To minimize the contamination of the ethanol by aerosol formation during distillation, the final distillation was carried out in a home-built sub-boiling apparatus [42] at about 348 K. In case of technical ethanol as starting material

Ni nanocrystals on HOPG(0001): A scanning tunnelling microscope study

• Michael Marz,
• Keisuke Sagisaka and
• Daisuke Fujita

Beilstein J. Nanotechnol. 2013, 4, 406–417, doi:10.3762/bjnano.4.48

• [7][8]. Various methods are employed for growing metallic clusters on surfaces such as ion sputtering [9], pulsed laser deposition [10], electro deposition [11][12][13], vapor deposition [14], aerosol deposition [15], material transfer of an STM tip [16], etc. For the formation of nanoparticles a

Photocatalytic antibacterial performance of TiO₂ and Ag-doped TiO₂ against S. aureus. P. aeruginosa and E. coli

• Kiran Gupta,
• R. P. Singh,
• Ashutosh Pandey and
• Anjana Pandey

Beilstein J. Nanotechnol. 2013, 4, 345–351, doi:10.3762/bjnano.4.40

• ) tetrabutoxide was purchased from Sigma Aldrich, AgNO3 from Fluka, and aerosol-OT (AOT) from Sigma Aldrich. Microorganisms and culture conditions Locally isolated log-phase cultures of S. aureus (Gram +ve), P. aeruginosa (Gram −ve) and E. coli (Gram −ve) were used for analysis of the antimicrobial assay. These

• -catalyzed sol–gel process [23] starting from titanium(IV) tetrabutoxide (2.94 mM) and using 5 mL of water (pH 2) in the presence of toluene as solvent containing 1% aerosol-OT (reverse micelles) under stirring for 1 h: After gelation, the gel was dried at 100 °C in an oven for 24 h; white TiO2 nanosized

• mM) using 5 mL of water (pH 2) in presence of toluene as solvent containing 1% aerosol-OT (reverse micelles). The appropriate concentration of silver salt (3% or 7%) in 0.5 mL deionized water was dropwise added to the reaction mixture under stirring. After gelation, the nanoparticles were allowed to

Functionalization of vertically aligned carbon nanotubes

• Eloise Van Hooijdonk,
• Carla Bittencourt,
• Rony Snyders and
• Jean-François Colomer

Beilstein J. Nanotechnol. 2013, 4, 129–152, doi:10.3762/bjnano.4.14

• , etc.). A great progress in this context has been recently realized by the IRAMIS/SPAM/Francis Perrin laboratory (France) [28]. Using the aerosol-assisted CVD technique, they synthesized VA-CNTs carpets over large surfaces such as a 30 cm in diameter silicon wafer. Among the different methods used to

Influence of the diameter of single-walled carbon nanotube bundles on the optoelectronic performance of dry-deposited thin films

• Kimmo Mustonen,
• Toma Susi,
• Antti Kaskela,
• Patrik Laiho,
• Ying Tian,
• Albert G. Nasibulin and
• Esko I. Kauppinen

Beilstein J. Nanotechnol. 2012, 3, 692–702, doi:10.3762/bjnano.3.79

• performance of thin films of single-walled carbon nanotubes (SWCNTs) was studied with respect to the properties of both individual nanotubes and their bundles. The SWCNTs were synthesized in a hot wire generator aerosol reactor, collected by gas filtration and dry-transferred onto various substrates. By thus

• ]. However, due to their sample fabrication method it is likely that residual doping and surfactants were present in the samples, impacting on the results of their measurements. By comparison, aerosol CVD synthesis offers a unique platform to study the impact of bundle characteristics on the performance of

• world-record-performance SWCNT films over a wide range of thicknesses from sub-monolayer networks for thin-film transistor channels [8], to high-performance, optically transparent electrodes [6][16]. Quite recently, both dry deposition of aerosol-synthesized tubes and SWCNTs from liquid dispersion have

Aerosol assisted fabrication of two dimensional ZnO island arrays and honeycomb patterns with identical lattice structures

• Mitsuhiro Numata and
• Yoshihiro Koide

Beilstein J. Nanotechnol. 2010, 1, 71–74, doi:10.3762/bjnano.1.9

• honeycomb patterns consisting of ZnO nanocrystal clusters were fabricated on predefined TiO2 seed patterns prepared by vacuum free, aerosol assisted wet-chemical synthesis. The TiO2 seed patterns were prepared by applying an aerosol of a water soluble titanium complex on hexagonally close-packed polystyrene

• with contrasting fill fractions of the materials. Keywords: aerosol; photonic crystal; polystyrene bead; TiO2; ZnO; Findings The wide bandgap (3.37 eV) and large exciton-binding energy (60 meV) of ZnO renders it a promising candidate for inexpensive transparent conductors and for optical applications

• identical spatial pitch but different fill fractions of periodic ZnO nanocrystal clusters on a 1.5 cm × 1.5 cm n-type (100) silicon wafer. In a newly developed m-CVD technique, an aqueous solution of a water soluble titanium complex (TiO2 precursor) [24][25] was delivered as aerosol on a polystyrene bead