Controlling surface morphology and sensitivity of granular and porous silver films for surface-enhanced Raman scattering, SERS

• Sherif Okeil and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2018, 9, 2813–2831, doi:10.3762/bjnano.9.263

• first systematic investigation in that direction. Experimental Preparation of sputtered silver films Thin films of silver were sputtered on glass substrates cleaned with acetone. Different thicknesses of silver were sputtered using a benchtop Cressington 208HR sputter coater in which the thickness of

Disorder in H⁺-irradiated HOPG: effect of impinging energy and dose on Raman D-band splitting and surface topography

• Lisandro Venosta,
• Noelia Bajales,
• Sergio Suárez and
• Paula G. Bercoff

Beilstein J. Nanotechnol. 2018, 9, 2708–2717, doi:10.3762/bjnano.9.253

• them as a reference (pristine). Prior to any characterization, these pieces were carefully washed with acetone, to remove any possible contamination introduced during the cutting and handling [24]. According to the manufacturer, SPI-2 is very similar to ZYB. This grade exhibits a mosaic angle as small

Non-agglomerated silicon–organic nanoparticles and their nanocomplexes with oligonucleotides: synthesis and properties

• Asya S. Levina,
• Marina N. Repkova,
• Nadezhda V. Shikina,
• Zinfer R. Ismagilov,
• Svetlana A. Yashnik,
• Dmitrii V. Semenov,
• Yulia I. Savinovskaya,
• Natalia A. Mazurkova,
• Inna A. Pyshnaya and
• Valentina F. Zarytova

Beilstein J. Nanotechnol. 2018, 9, 2516–2525, doi:10.3762/bjnano.9.234

• can be precipitated by acetone. The unbound oligonucleotide after precipitation of Si–NH2·ODN remains in solution and can be detected spectrophotometrically. This “acetone precipitation” technique allowed us to evaluate the optimal molar ratio of the amino groups in the nanoparticles to the phosphate

• adjusted to 100 µL with water in each vial. After vigorous stirring for 1 min, the mixture was left at room temperature for 30 min to facilitate complexation. The formed Si–NH2·ODN(1) complex was precipitated by acetone (precipitate 1). Supernatants from each vial were separated, and the unbound ODN in

• these supernatants were precipitated by the addition of 1 µL of 3 M LiClO4 (precipitate 2). The precipitates 1 and 2 were dried at 60 °C to remove the acetone and were dissolved in 1 M NaCl. The amount of the bound (precipitate 1) and unbound (precipitate 2) oligonucleotide was evaluated

Nanocellulose: Recent advances and its prospects in environmental remediation

• Katrina Pui Yee Shak,
• Yean Ling Pang and
• Shee Keat Mah

Beilstein J. Nanotechnol. 2018, 9, 2479–2498, doi:10.3762/bjnano.9.232

Thickness-dependent photoelectrochemical properties of a semitransparent Co₃O₄ photocathode

• Malkeshkumar Patel and
• Joondong Kim

Beilstein J. Nanotechnol. 2018, 9, 2432–2442, doi:10.3762/bjnano.9.228

• -Aldrich, sheet resistance of 7 Ω/sq) and a glass microscope slide were used as substrates. These were cleaned using a sequence of isopropyl alcohol, acetone and distilled water using ultrasonication. Then, various thicknesses of Co films were deposited using a dc magnetron sputtering system (dc power ca

Hydrothermal-derived carbon as a stabilizing matrix for improved cycling performance of silicon-based anodes for lithium-ion full cells

• Mirco Ruttert,
• Florian Holtstiege,
• Jessica Hüsker,
• Markus Börner,
• Martin Winter and
• Tobias Placke

Beilstein J. Nanotechnol. 2018, 9, 2381–2395, doi:10.3762/bjnano.9.223

• acetone and dried at 60 °C in ambient atmosphere. Afterwards, the dried products were carbonized at a temperature of 900 °C for six hours in an argon atmosphere, applying a heating ramp of 300 °C h−1, in order to remove heteroatoms and increase the electronic conductivity of the materials. Electrode

High-throughput micro-nanostructuring by microdroplet inkjet printing

• Hendrikje R. Neumann and
• Christine Selhuber-Unkel

Beilstein J. Nanotechnol. 2018, 9, 2372–2380, doi:10.3762/bjnano.9.222

• ][35]. Poly(styrene-b-2-vinylpyridine) (PS(79000)-P2VP(36500), 4 mg/mL, Polymer Source, Canada) was dissolved in o-xylene (p.A., Merck, Germany) and loaded with hydrogen tetrachloroaurate(III) (Aldrich, Germany) in a molecular ratio of 0.4. The substrates were cleaned in an acetone ultrasonic bath for

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

• Muhammad Imran,
• Nunzio Motta and
• Mahnaz Shafiei

Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202

• acetone at 250 °C compared with solid NFs with average diameter of 275 nm. These latter NFs give a response of 60.2 at 270 °C. The response time of WO3 NTs (5 s) is smaller than WO3 NFs (6–13 s) but the recovery time is longer (22 s) than WO3 NFs (4–9 s) because of different desorption rates in NTs

• time of 6 s for 2000 ppm and 16 s for 10 ppm as well as improved reversibility was measured for Sr/SnO2 NTs toward NH3 gas at room temperature as compared with the pristine SnO2 NFs. Similarly, SnO2 NFs doped with Ca2+/Au exhibit a higher response (62) to 100 ppm of acetone at lower temperature (180 °C

• ) with response and recovery times of 8 s and 5 s for 100 ppm of acetone [146]. SnO2 NTs have also been functionalized by bio-inspired Pt particles (2 nm diameter) at 0.16 wt % and Au particles (2.7 nm diameter) at 0.08 wt % using a protein nanocage by single-nozzle electrospinning [183] as shown

Phosphorus monolayer doping (MLD) of silicon on insulator (SOI) substrates

• Noel Kennedy,
• Ray Duffy,
• Luke Eaton,
• Dan O’Connell,
• Scott Monaghan,
• Shane Garvey,
• James Connolly,
• Chris Hatem,
• Justin D. Holmes and
• Brenda Long

Beilstein J. Nanotechnol. 2018, 9, 2106–2113, doi:10.3762/bjnano.9.199

• higher carrier concentration levels approaching the solid-solubility limits to be achieved in silicon. Experimental Substrate preparation SOI samples were degreased through sonication in acetone for 120 seconds followed by a dip in 2-propanol and drying under a stream of nitrogen. Samples were then

Localized photodeposition of catalysts using nanophotonic resonances in silicon photocathodes

• Evgenia Kontoleta,
• Sven H. C. Askes,
• Lai-Hung Lai and
• Erik C. Garnett

Beilstein J. Nanotechnol. 2018, 9, 2097–2105, doi:10.3762/bjnano.9.198

• fabrication of the three different types of silicon nanostructures. First, the samples were cleaned with soap and consecutively rinsed with copious amounts of water, acetone and isopropanol. After that, the samples were submerged in hot piranha solution (120 °C, 3:1 concentrated H2SO4/30% H2O2) for 20 min and

Nanoconjugates of a calixresorcinarene derivative with methoxy poly(ethylene glycol) fragments for drug encapsulation

• Alina M. Ermakova,
• Julia E. Morozova,
• Yana V. Shalaeva,
• Victor V. Syakaev,
• Aidar T. Gubaidullin,
• Alexandra D. Voloshina,
• Vladimir V. Zobov,
• Irek R. Nizameev,
• Olga B. Bazanova,
• Igor S. Antipin and
• Alexander I. Konovalov

Beilstein J. Nanotechnol. 2018, 9, 2057–2070, doi:10.3762/bjnano.9.195

• atmosphere. Then 8 g of 2 in 50 mL of dry DMFA was added and the reaction was carried out at 90 °С for 70 h under argon atmosphere. The solvent was evaporated under reduced pressure and the mixture was poured into a large amount of acetone to remove the inorganic salt. Then the evaporated mixture was

• . 3 mL of the buffered solution outside the dialysis bag were removed for analysis at suitable intervals, and replaced with fresh buffer solution. RhB concentration was determined by measuring the absorption at 554 nm using ε = 10800 М−1·cm−1 [45]. (a, b) 1H NMR spectra of (a) macrocycle 1 in acetone

Biomimetic and biodegradable cellulose acetate scaffolds loaded with dexamethasone for bone implants

• Aikaterini-Rafailia Tsiapla,
• Varvara Karagkiozaki,
• Veroniki Bakola,
• Foteini Pappa,
• Panagiota Gkertsiou,
• Eleni Pavlidou and
• Stergios Logothetidis

Beilstein J. Nanotechnol. 2018, 9, 1986–1994, doi:10.3762/bjnano.9.189

• through electrospinning, in order to prevent the inflammation that can occur after a total hip replacement surgery. Experimental Materials and methods Materials Cellulose acetate (CA, Mw = 30,000 g/mol), dexamethasone (≥97%), acetone (≥99.8%), trypsin and methylene blue were all purchased from Sigma

• Culture. Preparation of polymer and drug solution The CA solution (20%, w/w) was prepared by dissolving CA in a mixture of acetone and dimethylacetamide and stirred with a magnetic stirrer over night at room temperature. The dexamethasone solution was created by adding dexamethasone to acetone and placed

Self-assembled quasi-hexagonal arrays of gold nanoparticles with small gaps for surface-enhanced Raman spectroscopy

• Emre Gürdal,
• Simon Dickreuter,
• Fatima Noureddine,
• Pascal Bieschke,
• Dieter P. Kern and
• Monika Fleischer

Beilstein J. Nanotechnol. 2018, 9, 1977–1985, doi:10.3762/bjnano.9.188

• cleaned with acetone in an ultrasonic bath for two minutes. Then they were rinsed with isopropanol, and finally dried with nitrogen gas. A symmetric diblock copolymer (polystyrene-block-poly-2-vinylpyridine, PS(133000)-block-P2VP(132000), polymer source) was dissolved in toluene at a concentration of 1 mg

Synthesis of hafnium nanoparticles and hafnium nanoparticle films by gas condensation and energetic deposition

• Irini Michelakaki,
• Nikos Boukos,
• Dimitrios A. Dragatogiannis,
• Spyros Stathopoulos,
• Costas A. Charitidis and
• Dimitris Tsoukalas

Beilstein J. Nanotechnol. 2018, 9, 1868–1880, doi:10.3762/bjnano.9.179

• -beam lithography with square structures with side dimensions ranging from 200 nm to 5 μm. Then Hf nanoparticles were deposited on the patterned surface at a voltage Vs = 4.5 kV. Finally, after the deposition the resist was removed using Piranha solution, because it could not be removed with acetone

A visible-light-controlled platform for prolonged drug release based on Ag-doped TiO₂ nanotubes with a hydrophobic layer

• Caihong Liang,
• Jiang Wen and
• Xiaoming Liao

Beilstein J. Nanotechnol. 2018, 9, 1793–1801, doi:10.3762/bjnano.9.170

• platform. Experimental Materials Commercially pure titanium sheets (10 × 10 × 1 mm3) were purchased from Luoke Titanium Industry (Chengdu, China). Acetone was purchased from Changlian Chemical (Analytic Reagent, AR, Chengdu, China). Ethanol, dodecanethiol (NDM), ammonium fluoride (NH4F), ethylene glycol

• . Fabrication of pear-like titania nanotubes After degreasing in ethanol and DI water by sonication, the Ti sheets were polished by using metallographic abrasive papers (No. 400, 600 and 800) and further ultrasonically cleaned in the sequence of pure acetone, ethanol and distilled water. Anodic oxidation was

Toward the use of CVD-grown MoS₂ nanosheets as field-emission source

• Geetanjali Deokar,
• Nitul S. Rajput,
• Junjie Li,
• Francis Leonard Deepak,
• Wei Ou-Yang,
• Nicolas Reckinger,
• Carla Bittencourt,
• Jean-Francois Colomer and
• Mustapha Jouiad

Beilstein J. Nanotechnol. 2018, 9, 1686–1694, doi:10.3762/bjnano.9.160

• dried overnight to let the water trapped underneath the MoS2 NSs to be removed naturally. Next, the sample was baked at 110 °C for 10 min to improve the uniformity and the adhesion to the substrate. Finally, the PMMA was dissolved in acetone. Physical characterization methods The morphology of

Nanocomposites comprised of homogeneously dispersed magnetic iron-oxide nanoparticles and poly(methyl methacrylate)

• Sašo Gyergyek,
• David Pahovnik,
• Ema Žagar,
• Alenka Mertelj,
• Rok Kostanjšek,
• Miloš Beković,
• Marko Jagodič,
• Heinrich Hofmann and
• Darko Makovec

Beilstein J. Nanotechnol. 2018, 9, 1613–1622, doi:10.3762/bjnano.9.153

• amount of acetone. The NP-MMA material was thoroughly washed with acetone and dried in an oven at 60 °C. The nanocomposites were prepared by solution copolymerization of the MMA and NP-MMA in toluene (Scheme 1). A 100 mL three-neck round-bottom flask was charged with the suspension of NP-MMA

• analysis, a small amount of the nanoparticles were isolated from the suspension of NP-PMMA-3 immediately after the polymerization by centrifugation at 20,000g for 20 min. Any free polymer was washed from the sample by dispersing the sediment in acetone, centrifugation at 20,000g for 20 min and discarding

Closed polymer containers based on phenylboronic esters of resorcinarenes

• Tatiana Yu. Sergeeva,
• Rezeda K. Mukhitova,
• Irek R. Nizameev,
• Marsil K. Kadirov,
• Polina D. Klypina,
• Albina Y. Ziganshina and
• Alexander I. Konovalov

Beilstein J. Nanotechnol. 2018, 9, 1594–1601, doi:10.3762/bjnano.9.151

• index (PDI) of 0.23 according to dynamic light scattering (DLS) data (see Supporting Information File 1, Figure S1, Table S1). Hereafter, we studied only the particles formed using this ratio. The nanoparticles were purified by dialysis, washed with acetone and dried to give p(SRA-B) with 66% yield. The

• . Then mixture was dialyzed against K2CO3 (7 mM) solution for 30 min and then two times against water for 30 min. Solvent was removed under reduced pressure. The formed solid was washed with acetone and dried (4.7 mg, 66%). 1H NMR (600 MHz, D2O) δ 7.7–7.0 (br), 4.6–3.8 (br), 3.8–3.2 (br), 2.4–1,7 (br

Interaction-tailored organization of large-area colloidal assemblies

• Silvia Rizzato,
• Elisabetta Primiceri,
• Anna Grazia Monteduro,
• Adriano Colombelli,
• Angelo Leo,
• Maria Grazia Manera,
• Roberto Rella and
• Giuseppe Maruccio

Beilstein J. Nanotechnol. 2018, 9, 1582–1593, doi:10.3762/bjnano.9.150

• (diallyldimethylammonium chloride) (PDDA, MW 200000–350000), poly(sodium 4-styrenesulfonate) (PSS, MW 70000) and poly(allylamine hydrochloride) (PAH, MW 50000) were purchased from Sigma-Aldrich. Methods The substrates were cut with a diamond tip into squares with an area of about 1 cm2 and cleaned in acetone and

Electrodeposition of reduced graphene oxide with chitosan based on the coordination deposition method

• Mingyang Liu,
• Yanjun Chen,
• Chaoran Qin,
• Zheng Zhang,
• Shuai Ma,
• Xiuru Cai,
• Xueqian Li and
• Yifeng Wang

Beilstein J. Nanotechnol. 2018, 9, 1200–1210, doi:10.3762/bjnano.9.111

• electrochemical detection of glucose, NH3 gas, NO2 gas, ethanol and acetone [40][41][42][43]. Besides, graphene-based sensors have been used to detect phenolic compounds which are aromatic pollutants to the environment and human health [44][45]. These graphene-based sensors exhibit the high detection performance

• reported coordination deposition method [13]. A copper plate (or a copper wire) was used as the anodic electrode, and a platinum foil served as the cathodic electrode. Before use, both electrodes were carefully polished, and then ultrasonically washed in acetone, ethanol and distilled water for 10 min each

Semi-automatic spray pyrolysis deposition of thin, transparent, titania films as blocking layers for dye-sensitized and perovskite solar cells

• Hana Krýsová,
• Josef Krýsa and
• Ladislav Kavan

Beilstein J. Nanotechnol. 2018, 9, 1135–1145, doi:10.3762/bjnano.9.105

• sheet resistivity showed 12.5 Ω/sq and 7.9 Ω/sq for FTO(A) and FTO(B), respectively. FTO glass slides were cleaned in ethanol and acetone. TiO2 layers were deposited by semi-automatic spray coating set up using two different precursors (i) an ethanolic solution of titanium diisopropoxide bis

Single-crystalline FeCo nanoparticle-filled carbon nanotubes: synthesis, structural characterization and magnetic properties

• Rasha Ghunaim,
• Maik Scholz,
• Christine Damm,
• Bernd Rellinghaus,
• Rüdiger Klingeler,
• Bernd Büchner,
• Michael Mertig and
• Silke Hampel

Beilstein J. Nanotechnol. 2018, 9, 1024–1034, doi:10.3762/bjnano.9.95

• -filtered and washed with about 20 mL of washing agent (acetone and distilled water of a volumetric ratio of 1:1). The solid residue was then dried for 24 h at a temperature of 108 °C and reduced under hydrogen and argon atmosphere (50 vol % Ar + 50 vol % H2) at a temperature of 500 °C for 4 h to convert

• stirring. The flask with the mixture was placed in an oil bath and heated to a temperature of around T ≈ 65 °C for 4 h. The mixture was then naturally cooled down to room temperature and washed with about 20 mL washing agent of acetone and distilled water of a volumetric ratio of 1:1. The samples were then

• equipped with an EDX analyzer (AMETEK, Oxford). The TEM samples were prepared by adding a few drops of the sample suspension in acetone on a copper grid with a carbon coating on one side. The crystal structure of the magnetic nanoparticles inside the CNT was identified using an X’Pert Pro MPD PW3040/60 X

Enzymatically promoted release of organic molecules linked to magnetic nanoparticles

• Chiara Lambruschini,
• Silvia Villa,
• Luca Banfi,
• Fabio Canepa,
• Fabio Morana,
• Annalisa Relini,
• Paola Riani,
• Renata Riva and
• Fulvio Silvetti

Beilstein J. Nanotechnol. 2018, 9, 986–999, doi:10.3762/bjnano.9.92

• to give crude 2 as a white foam, which was used as such in the next step without further purification. It was taken up in acetone (70 mL) and DMF (30 mL) and treated, dropwise at rt, with 1 M aqueous NaOH (51 mL, 51.2 mmol). After stirring for 2 h, the volatile components were removed and the residue

• )carbonyl)-D-valyl-L-leucyl-N6-(tert-butoxycarbonyl)-L-lysine (5): To a solution of 4 (1.30 g, 2.34 mmol) in 1:2.5 DMF/acetone (15 mL, 0.16 M), 1 M NaOH (aqueous solution, 4.8 mL, 4.80 mmol) was added at rt. After stirring for 2 h, the volatile components were removed and the residue was partitioned between

Automated image segmentation-assisted flattening of atomic force microscopy images

• Yuliang Wang,
• Tongda Lu,
• Xiaolai Li and
• Huimin Wang

Beilstein J. Nanotechnol. 2018, 9, 975–985, doi:10.3762/bjnano.9.91

• spin coating a thin film of polystyrene (PS) on a silicon (100) substrate at a speed of 500 rpm. Prior to spin coating, the silicon substrate was sequentially cleaned in a sonic bath of piranha solution, acetone and water for 30 minutes. The PS solution was obtained by dissolving PS particles

Heavy-metal detectors based on modified ferrite nanoparticles

• Urszula Klekotka,
• Ewelina Wińska,
• Elżbieta Zambrzycka-Szelewa,
• Dariusz Satuła and
• Beata Kalska-Szostko

Beilstein J. Nanotechnol. 2018, 9, 762–770, doi:10.3762/bjnano.9.69

• deoxygenated acetone. Rinsing was repeated two more times and, finally, the sample was dried by rotary evaporation until a powder was obtained [20][21]. Modification of nanoparticles with phthalic anhydride, succinic anhydride and acetic anhydride The application of Ca ferrite nanoparticles modified with SiO2

• studies as potential heavy-metal detectors are 3-phosphonopropionic acid (3-PPA) and 16-phosphonohexadecanoic (16-PHDA). Before the modification with 3-PPA or 16-PHDA, nanoparticles were washed firstly in acetone and then ethanol, and placed for about 30 s in an ultrasonic bath to ensure proper particles