Modification of graphene oxide and its effect on properties of natural rubber/graphene oxide nanocomposites

• Nghiem Thi Thuong,
• Le Dinh Quang,
• Vu Quoc Cuong,
• Cao Hong Ha,
• Nguyen Ba Lam and
• Seiichi Kawahara

Beilstein J. Nanotechnol. 2024, 15, 168–179, doi:10.3762/bjnano.15.16

• (0.2%). Preparation of graphene oxide and silanization with VTES The graphene oxide used in this work was synthesized from graphite flakes using a modified version of Hummers’ method [31], similar to those reported in [24]. About 1 g of graphite powder was put into 23 mL of concentrated H2SO4, and 0.5

• that of DPNR/GO. Our work provided insight into how modified GO interacts with rubber particles during radical graft copolymerization compared to unmodified GO. Then, a suitable approach could be made in the future to fabricate NR/silica/GO composite for abrasion resistance. Silanization of graphene

A 3D-polyphenylalanine network inside porous alumina: Synthesis and characterization of an inorganic–organic composite membrane

• Jonathan Stott and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2020, 11, 938–951, doi:10.3762/bjnano.11.78

•  1, Figure S2). The surface of the ALOX-membranes was prefunctionalized by silanization to form an initial layer of initiating groups on the surface of the ALOX substrate (see Figure 1). As initiators, primary amino groups were used, which were immobilized by covalent bonding of amino groups

• GmbH) and Nicolet 6700 (Thermo Fisher Scientific) equipment, respectively, and thermogravimeric measurements were done with a TG209 F1 (Netzsch) system. Pretreatment and silanization of ALOX-membranes. The ALOX-substrates were subsequently cleaned in boiling 35% H2O2/water solution and deionized water

• followed by drying at 100 °C in air over night. The ALOX-substrates were cooled to room temperature in air and stored under inert gas atmosphere until use. For silanization five ALOX-membranes were poured in 5 mL of a 1.5 vol % APTMS solution in dry toluene. The solvent was refluxed for 16 h under inert

Strategy to discover full-length amyloid-beta peptide ligands using high-efficiency microarray technology

• Clelia Galati,
• Natalia Spinella,
• Lucio Renna,
• Danilo Milardi,
• Francesco Attanasio,
• Michele Francesco Maria Sciacca and
• Corrado Bongiorno

Beilstein J. Nanotechnol. 2017, 8, 2446–2453, doi:10.3762/bjnano.8.243

• ribbon aggregates are clearly visible. Propensity of the epoxysilane HESs to immobilize peptides Silanization has been widely-used as a strategy to prepare optimal protein or DNA microarrays [25][26][40], the epoxide groups may bind peptide molecules through the reaction with the basic amino acid

• the blocking process or differ from the fluorescence background level measured on the reference HESs. This result suggests that the silanization process does not critically modify optical properties of the HESs and the interference phenomena responsible for the fluorescence enhancement may still be

• preserved upon silanization. No fluorescence spots have been observed on the reference slide. In this case, the blocking-washing step was effective to fully remove the full-length amyloid spots. After the O2-plasma treatment, the surface of the un-epoxysilane slides may likely be rich in Si–OH groups that

Synthesis and functionalization of NaGdF₄:Yb,Er@NaGdF₄ core–shell nanoparticles for possible application as multimodal contrast agents

• Dovile Baziulyte-Paulaviciene,
• Vitalijus Karabanovas,
• Marius Stasys,
• Greta Jarockyte,
• Vilius Poderys,
• Simas Sakirzanovas and
• Ricardas Rotomskis

Beilstein J. Nanotechnol. 2017, 8, 1815–1824, doi:10.3762/bjnano.8.183

• phase and stabilized with hydrophobic ligands, such as oleic acid. Consequently, they can only be dispersed in nonpolar solvents (e.g., toluene, cyclohexane). In the past few years, several methods including surface silanization [14], ligand exchange [15], ligand oxidation [16], ligand removal [17], and

Impact of surface wettability on S-layer recrystallization: a real-time characterization by QCM-D

• Jagoba Iturri,
• Ana C. Vianna,
• Alberto Moreno-Cencerrado,
• Dietmar Pum,
• Uwe B. Sleytr and
• José Luis Toca-Herrera

Beilstein J. Nanotechnol. 2017, 8, 91–98, doi:10.3762/bjnano.8.10

• AB, Sweden). Both substrates were pre-treated with UV/ozone (BioForce Nanosciences, Ames, IA, USA) for 30 min and then placed overnight in an evacuated desiccator with ca. 30 µL of 1H,1H,2H,2H-perfluorododecyltrichlorosilane (Sigma Aldrich) in chloroform for vapor silanization. Finally, they were

Reasons and remedies for the agglomeration of multilayered graphene and carbon nanotubes in polymers

• Rasheed Atif and
• Fawad Inam

Beilstein J. Nanotechnol. 2016, 7, 1174–1196, doi:10.3762/bjnano.7.109

• hydrophilic and it can strengthen the CNT–polymer bond [40]. The functionalization agent for silane functionalization of MLG and CNTs is (3-glycidoxypropyl)trimethoxysilane (GPTMS) [41]. The silanization is carried out in a GPTMS solution at about 60–65 °C for about 6 h [41]. The silane-grafted CNTs showed a

Self-organization of gold nanoparticles on silanated surfaces

• Htet H. Kyaw,
• Salim H. Al-Harthi,
• Azzouz Sellai and
• Joydeep Dutta

Beilstein J. Nanotechnol. 2015, 6, 2345–2353, doi:10.3762/bjnano.6.242

• silanization process) and the amine (NH2) from the aminopropyl groups (pointing away from the surface) for further functionalization [5]. APTES has been extensively studied, and it has been reported that the orientation and attachment of APTES on surfaces depend on temperature, humidity, concentration of APTES

• and deposition time [6]. To achieve NH2 groups as the interface between APTES molecule and nanoparticles is a major issue in silanization processes. During the self-assembly process, terminal amine (NH2) can be folded to form hydrogen bonds with free silanol groups, which leads to multilayer

Probing fibronectin–antibody interactions using AFM force spectroscopy and lateral force microscopy

• Andrzej J. Kulik,
• Małgorzata Lekka,
• Kyumin Lee,
• Grazyna Pyka-Fościak and
• Wieslaw Nowak

Beilstein J. Nanotechnol. 2015, 6, 1164–1175, doi:10.3762/bjnano.6.118

• ) was used for the silanization of the mica and cantilever surfaces; (c) 2.5% glutaraldehyde aqueous solution, prepared from a 25% solution of glutaraldehyde was purchased from Sigma. All solutions were prepared using deionized water (Cobrabid water purification system, 0.08 µS). Cantilevers

Silica micro/nanospheres for theranostics: from bimodal MRI and fluorescent imaging probes to cancer therapy

• Shanka Walia and
• Amitabha Acharya

Beilstein J. Nanotechnol. 2015, 6, 546–558, doi:10.3762/bjnano.6.57

• observed in the CdTe PL spectra in which a shift of about 10 nm was monitored after silanization. The saturation magnetization value was found to be 1.34 emu/g for the hybrid nanocomposite material, which was relatively low compared to the simple magnetic NPs. This observation was in line with the fact

Increasing throughput of AFM-based single cell adhesion measurements through multisubstrate surfaces

• Miao Yu,
• Nico Strohmeyer,
• Jinghe Wang,
• Daniel J. Müller and
• Jonne Helenius

Beilstein J. Nanotechnol. 2015, 6, 157–166, doi:10.3762/bjnano.6.15

• vacuum chamber at room temperature. After silanization, the mold was washed extensively with water and ethanol. It was important that the cavities were free of any residues before casting. The PDMS elastomer (Sylgard 184, Dow Corning) was mixed in a 10:1 oil to base ratio. The mixture was placed in a

A sonochemical approach to the direct surface functionalization of superparamagnetic iron oxide nanoparticles with (3-aminopropyl)triethoxysilane

• Bashiru Kayode Sodipo and
• Azlan Abdul Aziz

Beilstein J. Nanotechnol. 2014, 5, 1472–1476, doi:10.3762/bjnano.5.160

• an acoustic cavitation (sonochemical) process were found to induce a rapid silanization reaction between SPION and APTES. FTIR, XPS and XRD measurements were used to demonstrate the grafting of APTES on SPION. Compared to what was reported in literature, the results showed that the silanization

• reaction time was greatly minimized. More importantly, the product displayed superparamagnetic behaviour at room temperature with a more than 20% higher saturation magnetization. Keywords: (3-aminopropyl)triethoxysilane (APTES); functionalization; nanoparticles; silanization; sonochemical

• silanization reaction between the SPION and APTES. Therefore, the energy provided by the initial 2 min sonication period was employed to disperse the SPION. Further 20 minutes sonication of the dispersed SPION in the presence of APTES generated an ultrasound beam with a power of approx. 35 W, which provided

Selective surface modification of lithographic silicon oxide nanostructures by organofunctional silanes

• Thomas Baumgärtel,
• Christian von Borczyskowski and
• Harald Graaf

Beilstein J. Nanotechnol. 2013, 4, 218–226, doi:10.3762/bjnano.4.22

• investigations. Routes for the preparation of methyl- or amino-terminated structures or silicon surfaces are presented and discussed. The formation of silane monolayers on nanoscopic silicon oxide nanostructures was found to be much more sensitive towards ambient humidity than, e.g., the silanization of larger

• AFM measurement (water adsorption or the energy dissipation of the AFM tip) should be investigated in detail in further statistical studies. Covalent binding of FITC to silicon oxide nanostructures Once suitable conditions for the controlled silanization of LAO nanostructures had been found

• of silane monolayers on nanoscopic silicon oxide nanostructures has proven to be much more sensitive towards ambient humidity than, e.g., silanization of larger OH-terminated silica surfaces. This is most likely due to a lower density of surface hydroxy groups, which requires a longer reaction time

Imaging ultra thin layers with helium ion microscopy: Utilizing the channeling contrast mechanism

• Gregor Hlawacek,
• Vasilisa Veligura,
• Stefan Lorbek,
• Tijs F. Mocking,
• Antony George,
• Raoul van Gastel,
• Harold J. W. Zandvliet and
• Bene Poelsema

Beilstein J. Nanotechnol. 2012, 3, 507–512, doi:10.3762/bjnano.3.58

• , the BSHe data presented here was recorded with lower PEs between 10 keV and 20 keV. This results in a better signal-to-noise ratio for the BSHe images. Patterns of self-assembled monolayers (SAM) were created by using a PDMS stamp and gas-phase silanization. Orthogonal stripes with an identical width

Macromolecular shape and interactions in layer-by-layer assemblies within cylindrical nanopores

• Thomas D. Lazzara,
• K. H. Aaron Lau,
• Wolfgang Knoll,
• Andreas Janshoff and
• Claudia Steinem

Beilstein J. Nanotechnol. 2012, 3, 475–484, doi:10.3762/bjnano.3.54

• surface, which is negatively charged. For the polyelectrolyte species, the macromolecules were deposited on a positively charged AAO surface obtained by silanization with (3-aminopropyl)-triethoxysilane. In all LbL steps, each adsorption step was continued until the adsorption kinetics showed that

• film-thickness monitor. For the metal layer at the AAO bottom, 2 nm of Cr and 25 nm of Au were evaporated on the AAO barrier layer. For imaging purposes 1 nm Cr and 4 nm Au were evaporated on SEM samples. AAO silanization with APTES This step was only used with the linear-PEs. For avidin, the protein

• was adsorbed on the unfunctionalized surface. AAO substrates were O2 plasma cleaned for 2 min immediately prior to gas-phase silanization to increase the surface density of OH groups. The glass slide substrates to be silanized were inserted into a glass staining jar and 50 µL of APTES were added in a

Self-assembled monolayers and titanium dioxide: From surface patterning to potential applications

• Yaron Paz

Beilstein J. Nanotechnol. 2011, 2, 845–861, doi:10.3762/bjnano.2.94

• situation may prevail also with SAMs having long alkyl chains, whose outer groups are located far from the substrate and in which multiple intermolecular van-der-Waals (VdW) interactions play a larger role. The high solubility of polysiloxanes in CO2 led researchers to study the silanization of titanium

Tip-enhanced Raman spectroscopic imaging of patterned thiol monolayers

• Johannes Stadler,
• Thomas Schmid,
• Lothar Opilik,
• Phillip Kuhn,
• Petra S. Dittrich and
• Renato Zenobi

Beilstein J. Nanotechnol. 2011, 2, 509–515, doi:10.3762/bjnano.2.55

• printing stamps was fabricated by standard photolithography [14][38][39]. Briefly, a positive resist (AZ1518) was spin-coated to a height of 2.1 ± 0.1 μm onto a silicon wafer, exposed through a sub-micrometer resolution chrome mask and developed. After overnight silanization, poly(dimethylsiloxane) (PDMS

Microfluidic anodization of aluminum films for the fabrication of nanoporous lipid bilayer support structures

• Jaydeep Bhattacharya,
• Alexandre Kisner,
• Andreas Offenhäusser and
• Bernhard Wolfrum

Beilstein J. Nanotechnol. 2011, 2, 104–109, doi:10.3762/bjnano.2.12

• nanoporous membrane for lipid bilayer formation, the nanoporous alumina surface was first subjected to silanization. The silanization was carried out in the solution phase according to the method described by Steinle and coworkers [37][38] with slight modifications. Briefly, a 10% (v/v) solution of (3