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

A review of carbon-based and non-carbon-based catalyst supports for the selective catalytic reduction of nitric oxide

• Shahreen Binti Izwan Anthonysamy,
• Syahidah Binti Afandi,
• Mehrnoush Khavarian and
• Abdul Rahman Bin Mohamed

Beilstein J. Nanotechnol. 2018, 9, 740–761, doi:10.3762/bjnano.9.68

• are known to be hydrophobic in nature. These materials normally show a low affinity against polar solvents, such as water, and in other cases, have a high affinity against non-polar solvents, such as acetone. Although the essence of carbon-based materials are mostly likely to be hydrophobic, which

Synthesis and characterization of two new TiO₂-containing benzothiazole-based imine composites for organic device applications

• Anna Różycka,
• Agnieszka Iwan,
• Krzysztof Artur Bogdanowicz,
• Michal Filapek,
• Natalia Górska,
• Damian Pociecha,
• Marek Malinowski,
• Patryk Fryń,
• Agnieszka Hreniak,
• Jakub Rysz,
• Paweł Dąbczyński and
• Monika Marzec

Beilstein J. Nanotechnol. 2018, 9, 721–739, doi:10.3762/bjnano.9.67

• min, and then the temperature was raised to 170 °C and kept on for 24 h under positive nitrogen pressure. The mixture was then cooled to room temperature, scraped and powdered. The crude product was washed three times with ethanol (3 × 500 mL) and then two times with acetone (2 × 300 mL) to remove

• . The reaction was conducted in argon atmosphere and the condenser was fitted with a Dean–Stark trap. After cooling, the mixture was precipitated with 100 mL of ethanol. The crude product was washed three times with methanol (1500 mL) and then twice with acetone (800 mL) to remove unreacted monomers

• )/Au multilayer structures. First, the ITO-coated glass substrate was cleaned by ultrasonication in acetone and isopropanol for ≈20 min and oxygen plasma for 30 s. TiO2 (3Dnano P25, average particle size 21 ± 5 nm, mixed rutile (20%)/anatase (80%) phases, and a surface area of 50 m2/g) was mixed with

Combined pulsed laser deposition and non-contact atomic force microscopy system for studies of insulator metal oxide thin films

• Daiki Katsube,
• Hayato Yamashita,
• Satoshi Abo and
• Masayuki Abe

Beilstein J. Nanotechnol. 2018, 9, 686–692, doi:10.3762/bjnano.9.63

• ). (e) XRD patterns for the samples shown in (a–d). The samples were prepared under different conditions of annealing temperature, oxygen partial pressure, and laser power density as shown in the AFM images. The pulsed laser frequency was fp = 2 Hz. The samples were washed with acetone and ultrapure

Optimisation of purification techniques for the preparation of large-volume aqueous solar nanoparticle inks for organic photovoltaics

• Furqan Almyahi,
• Thomas R. Andersen,
• Nathan A. Cooling,
• Natalie P. Holmes,
• Matthew J. Griffith,
• Krishna Feron,
• Xiaojing Zhou,
• Warwick J. Belcher and
• Paul C. Dastoor

Beilstein J. Nanotechnol. 2018, 9, 649–659, doi:10.3762/bjnano.9.60

• with 112 rpm/s acceleration for 1 min. Device fabrication On pre-cleaned (water, acetone and isopropanol) patterned ITO glass substrates PEDOT:PSS (HTL Solar) films were spin-coated at 5000 rpm for 1 min and baked for 30 min at 140 °C (film thickness of 35 ± 5 nm). On top of the PEDOT:PSS layer, the

Sensing behavior of flower-shaped MoS₂ nanoflakes: case study with methanol and xylene

• Maryam Barzegar,
• Masoud Berahman and
• Azam Iraji zad

Beilstein J. Nanotechnol. 2018, 9, 608–615, doi:10.3762/bjnano.9.57

• a good sensor to detect acetone with response to methanol [14]. There are also investigations that marked the high response of MoS2 toward methanol and ethanol [15]. Besides these experimental reports, there are numerous theoretical investigations which illustrate the potential of MoS2 for detecting

• . The substrates were immersed in acetone and isopropyl alcohol and sonicated for 15 min to remove any undesired surface ions. A 200 nm Pt film as a snake-shaped heater was sputtered on the back of the substrate using a sputter coater from Nanostructured Coatings Co. To fabricate the sensor device

Electron interactions with the heteronuclear carbonyl precursor H₂FeRu₃(CO)₁₃ and comparison with HFeCo₃(CO)₁₂: from fundamental gas phase and surface science studies to focused electron beam induced deposition

• Ragesh Kumar T P,
• Paul Weirich,
• Lukas Hrachowina,
• Marc Hanefeld,
• Ragnar Bjornsson,
• Helgi Rafn Hrodmarsson,
• Sven Barth,
• D. Howard Fairbrother,
• Michael Huth and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2018, 9, 555–579, doi:10.3762/bjnano.9.53

Sugarcane juice derived carbon dot–graphitic carbon nitride composites for bisphenol A degradation under sunlight irradiation

• Lan Ching Sim,
• Jing Lin Wong,
• Chen Hong Hak,
• Jun Yan Tai,
• Kah Hon Leong and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2018, 9, 353–363, doi:10.3762/bjnano.9.35

• extracted into a beaker. The acetone solution was added excessively into the solution and centrifuged at 10,000 rpm for 15 min to remove the remaining deposit. A clear yellowish-brown solution was obtained. Preparation of CD/g-C3N4 composites 0.2 g of g-C3N4 was mixed with the previously prepared CD

Design of polar self-assembling lactic acid derivatives possessing submicrometre helical pitch

• Alexej Bubnov,
• Cyril Vacek,
• Michał Czerwiński,
• Terezia Vojtylová,
• Wiktor Piecek and
• Věra Hamplová

Beilstein J. Nanotechnol. 2018, 9, 333–341, doi:10.3762/bjnano.9.33

• performed similarly as generally described in [37]. The specific reaction scheme for the synthetic design is presented in Scheme 1. The crude products were purified by column chromatography on silica gel (Kieselgel 60, Merck, Darmstadt) using a mixture of CH2Cl2 and acetone (99.8:0.2) as the eluent and

Wafer-scale bioactive substrate patterning by chemical lift-off lithography

• Chong-You Chen,
• Chang-Ming Wang,
• Hsiang-Hua Li,
• Hong-Hseng Chan and
• Wei-Ssu Liao

Beilstein J. Nanotechnol. 2018, 9, 311–320, doi:10.3762/bjnano.9.31

• , USA) was thoroughly mixed, degassed under vacuum, cast onto master molds, and cured on an aluminum-top hot plate at 100 °C overnight. The PDMS stamps were separated from the master molds, sequentially rinsed with acetone and isopropanol, and then blown dry with nitrogen gas. The prepared stamps were

Bombyx mori silk/titania/gold hybrid materials for photocatalytic water splitting: combining renewable raw materials with clean fuels

• Stefanie Krüger,
• Michael Schwarze,
• Otto Baumann,
• Christina Günter,
• Michael Bruns,
• Christian Kübel,
• Dorothée Vinga Szabó,
• Rafael Meinusch,
• Verónica de Zea Bermudez and
• Andreas Taubert

Beilstein J. Nanotechnol. 2018, 9, 187–204, doi:10.3762/bjnano.9.21

• sulfate (MgSO4, AnalaR Normapure, VWR), sodium phosphate monobasic (NaH2PO4, ACS reagent, Sigma Aldrich), uranyl acetate (p.a., Merck), ethanol absolute (EtOHabs, ≥99.8%, Carl Roth), acetone (≥99.8%, Carl Roth), AGAR Low Viscosity Resin (Plano), and PLANOCARBON (Plano) were used as received. Water-free

• ., and 2× 100% acetoneabs. for 15 min each. Finally, the materials were immersed in Agar Low Viscosity Resin/acetone (1:2 wt/wt) mixtures for 2 h, then in resin/acetone (1:1 wt/wt) mixtures for 2 h, and then in pure resin overnight under a rotatory motion. The as-prepared samples were transferred into a

Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network

• Doina Manaila Maximean,
• Octavian Danila,
• Pedro L. Almeida and
• Constantin Paul Ganea

Beilstein J. Nanotechnol. 2018, 9, 155–163, doi:10.3762/bjnano.9.18

• nano- and micro-fiber cellulose mats used to prepare the electro-optical cells were produced by electrospinning [21][22][28] from an isotropic solution (15%) of cellulose acetate (CA, Aldrich, MW = 60.000 g·mol−1, 40% acetyl groups) in a mixture of dimethylacetamide/acetone (1:2). The solution was

Electron-driven and thermal chemistry during water-assisted purification of platinum nanomaterials generated by electron beam induced deposition

• Ziyan Warneke,
• Markus Rohdenburg,
• Jonas Warneke,
• Janina Kopyra and
• Petra Swiderek

Beilstein J. Nanotechnol. 2018, 9, 77–90, doi:10.3762/bjnano.9.10

• clearly observed from condensed layers of acetone and acetylacetone [20] in the same setup used also for the experiments described here. Beside the predominant CH4, a small desorption signal with m/z ratio 28 is seen at the start of irradiation (Figure 3). It was identified as a minor CO background signal

Gas-sensing behaviour of ZnO/diamond nanostructures

• Marina Davydova,
• Alexandr Laposa,
• Jiri Smarhak,
• Alexander Kromka,
• Neda Neykova,
• Josef Nahlik,
• Jiri Kroutil,
• Jan Drahokoupil and
• Jan Voves

Beilstein J. Nanotechnol. 2018, 9, 22–29, doi:10.3762/bjnano.9.4

• rapid response speed (2 s) upon exposure to CO [27]. Zhang et al. synthesized hybrid ZnFe2O4/ZnO hollow spheres that exhibited a high sensitivity to acetone and a fast response speed of 5.2 s [28]. In this study we combine the merits of two different materials (n-type ZnO and p-type H-terminated diamond

The role of ligands in coinage-metal nanoparticles for electronics

• Ioannis Kanelidis and
• Tobias Kraus

Beilstein J. Nanotechnol. 2017, 8, 2625–2639, doi:10.3762/bjnano.8.263

• . Exchanging CTAB with conjugated, thiophene-based polymers provided a stable ink that was used to deposit lines with good electrical conductivities [83]. Silver nanoparticles initially carrying oleylamine were coated with acrylic acid (Figure 2) that provided excellent stability in acetone or ethanol over a