The effect of heat treatment on the morphology and mobility of Au nanoparticles

• Sven Oras,
• Sergei Vlassov,
• Simon Vigonski,
• Boris Polyakov,
• Mikk Antsov,
• Vahur Zadin,
• Rünno Lõhmus and
• Karine Mougin

Beilstein J. Nanotechnol. 2020, 11, 61–67, doi:10.3762/bjnano.11.6

• pronounced facets (and hence higher surface area) as well as the presence of surfactants that can act as a glue. The immobility of the NPs heated to 800 °C was surprising, especially considering the fact that they look the most round in the TEM images. One possible explanation is related to the partial

Recent progress in perovskite solar cells: the perovskite layer

• Xianfeng Dai,
• Ke Xu and
• Fanan Wei

Beilstein J. Nanotechnol. 2020, 11, 51–60, doi:10.3762/bjnano.11.5

• the bladed films and can even passivate charge traps to further improve the device performance. Finally, stabilized PCEs of 15.3% and 14.6% were reached for devices with active areas of 33.0 cm2 and 57.2 cm2 at a high coating speed of 180 m·h−1. More importantly, the surfactants could be a kind of

Design of a nanostructured mucoadhesive system containing curcumin for buccal application: from physicochemical to biological aspects

• Sabrina Barbosa de Souza Ferreira,
• Gustavo Braga,
• Évelin Lemos Oliveira,
• Jéssica Bassi da Silva,
• Hélen Cássia Rosseto,
• Lidiane Vizioli de Castro Hoshino,
• Mauro Luciano Baesso,
• Wilker Caetano,
• Craig Murdoch,
• Helen Elizabeth Colley and
• Marcos Luciano Bruschi

Beilstein J. Nanotechnol. 2019, 10, 2304–2328, doi:10.3762/bjnano.10.222

• released from the drug delivery system and how the applied technology influences the availability of the drug. Another aspect to be considered for the in vitro drug release analysis is the choice of release medium. For hydrophobic drugs, sometimes it is necessary to add surfactants that can provide the

Microbubbles decorated with dendronized magnetic nanoparticles for biomedical imaging: effective stabilization via fluorous interactions

• Da Shi,
• Justine Wallyn,
• Dinh-Vu Nguyen,
• Francis Perton,
• Delphine Felder-Flesch,
• Sylvie Bégin-Colin,
• Mounir Maaloum and
• Marie Pierre Krafft

Beilstein J. Nanotechnol. 2019, 10, 2103–2115, doi:10.3762/bjnano.10.205

• conjunction with focused ultrasound, and under magnetic resonance imaging guidance, for achieving blood/brain and blood/tumor barrier crossing of drugs [11][12]. Medical MBs have a shell consisting of surfactants, phospholipids, or polymers and are usually stabilized by a fluorocarbon gas [13] that acts as an

Green and scalable synthesis of nanocrystalline kuramite

• Andrea Giaccherini,
• Giuseppe Cucinotta,
• Stefano Martinuzzi,
• Enrico Berretti,
• Werner Oberhauser,
• Alessandro Lavacchi,
• Giovanni Orazio Lepore,
• Giordano Montegrossi,
• Maurizio Romanelli,
• Antonio De Luca,
• Massimo Innocenti,
• Vanni Moggi Cecchi,
• Matteo Mannini,
• Antonella Buccianti and
• Francesco Di Benedetto

Beilstein J. Nanotechnol. 2019, 10, 2073–2083, doi:10.3762/bjnano.10.202

• all of these requirements. The material constraints must be considered, not only for the final product, but for the whole production process. Most works reporting the successful synthesis of CTS have employed surfactants, high pressure or noxious solvents. In this paper, we demonstrate the synthesis

• kuramite by a simple, green and scalable one-pot approach without the use of surfactants. Due to the complex crystal chemistry of the phases in the Cu–Sn–S system, we employed a deep structural and compositional analysis to correctly assign the CTS phases. We emphasize that a multianalytical approach

Gold-coated plant virus as computed tomography imaging contrast agent

• Alaa A. A. Aljabali,
• Mazhar S. Al Zoubi,
• Khalid M. Al-Batanyeh,
• Ali Al-Radaideh,
• Mohammad A. Obeid,
• Abeer Al Sharabi,
• Walhan Alshaer,
• Bayan AbuFares,
• Tasnim Al-Zanati,
• Murtaza M. Tambuwala,
• Naveed Akbar and
• David J. Evans

Beilstein J. Nanotechnol. 2019, 10, 1983–1993, doi:10.3762/bjnano.10.195

• ) aqueous Hellmanex solution (strong alkaline cleaning concentrate made of phosphates and surfactants from Helma Analytics) and air dried prior to being filled with sample solution (500 μL). The outer surface of the cells was wiped gently with a sheet of soft lens cleaning tissue. In total, 10 successive

Pulsed laser synthesis of highly active Ag–Rh and Ag–Pt antenna–reactor-type plasmonic catalysts

• Kenneth A. Kane and
• Massimo F. Bertino

Beilstein J. Nanotechnol. 2019, 10, 1958–1963, doi:10.3762/bjnano.10.192

• benefits: (1) the absence of surfactants and ligands; (2) a simple, robust, and quick two-step method production; (3) bulk targets of the constituent metals as the only necessary ingredients. Experimental The synthesis of the monometallic colloids was carried out using a EKSPLA SL312G/SH/TH pulsed laser

Preservation of rutin nanosuspensions without the use of preservatives

• Pascal L. Stahr and
• Cornelia M. Keck

Beilstein J. Nanotechnol. 2019, 10, 1902–1913, doi:10.3762/bjnano.10.185

• the early 1990s [1][2][3][4]. They are composed of 100% substance, are stabilized with only small amounts of surfactants, and possess particle sizes below 1 µm. According to the Ostwald–Freundlich equation nanocrystals possess a higher curvature leading to an enhanced dissolution pressure and thus to

Microfluidic manufacturing of different niosomes nanoparticles for curcumin encapsulation: Physical characteristics, encapsulation efficacy, and drug release

• Mohammad A. Obeid,
• Ibrahim Khadra,
• Abdullah Albaloushi,
• Margaret Mullin,
• Hanin Alyamani and
• Valerie A. Ferro

Beilstein J. Nanotechnol. 2019, 10, 1826–1832, doi:10.3762/bjnano.10.177

• . Niosome nanoparticles are lipid-based, and composed of non-ionic surfactants with cholesterol orientated into a membrane bilayer structure. Two different non-ionic surfactants were used and the mixing parameters were varied to optimize the characteristics of the prepared niosomes. The prepared niosomes

• surfactants prepared by the solvent evaporation method, Xu et al. were able to achieve around 92% loading efficiency of curcumin and measured enhanced cytotoxic activity against ovarian cancer cells compared with freely dispersed curcumin [9]. Microfluidic mixing is a recently developed method for the

• encapsulating curcumin were prepared by microfluidic mixing by varying the surfactants and mixing parameters. Previously, our lab successfully developed empty niosomes through microfluidic mixing using different types of surfactants such as Tween 85 or Span 85 at different ratios. In this work, these

Materials nanoarchitectonics at two-dimensional liquid interfaces

• Katsuhiko Ariga,
• Michio Matsumoto,
• Taizo Mori and
• Lok Kumar Shrestha

Beilstein J. Nanotechnol. 2019, 10, 1559–1587, doi:10.3762/bjnano.10.153

• [241]. At the interface between butanol and benzene, C60 typically assembles into one-dimensional superstructures (rods and tubes). However, by adding surfactants to those interfacial systems, the morphology of the assemblies can be altered to three-dimensional objects. The final morphology highly

• depends on type and concentration of the surfactants. When the non-ionic surfactant diglycerol monolaurate was added to butanol (0.01%), flower-like three-dimensional objects were precipitated at the interface with benzene. Detailed morphological analyses with electron microscopy techniques revealed that

• the surfactants did not basically alter primarily the one-dimensional structures of the formed assemblies. Instead, they seemed to promote super-lattice formation constructing three-dimensional flowers form the same one-dimensional rods observed in non-surfactant systems (tubes). The thermal

Highly ordered mesoporous silica film nanocomposites containing gold nanoparticles for the catalytic reduction of 4-nitrophenol

• Mohamad Azani Jalani,
• Leny Yuliati,
• Siew Ling Lee and
• Hendrik O. Lintang

Beilstein J. Nanotechnol. 2019, 10, 1368–1379, doi:10.3762/bjnano.10.135

• surfactant to form the material Mobil composition of matter (MCM)-41 [15]. Considering their low toxicity, their bio-degradable nature, and the fact that they are inexpensive and highly availability, non-ionic surfactants such as Brij [16] and Pluronic [17] block copolymers have also been employed as

• from gold(III) chloride trihydrate (HAuCl4) solution have been used as a precursor for post-synthetic grafting upon mixing with mesoporous silica [20]. Another method is to utilize the co-condensation reaction by the mixing solution of HAuCl4 with surfactants and silica sources during the sol–gel

Photoactive nanoarchitectures based on clays incorporating TiO₂ and ZnO nanoparticles

• Eduardo Ruiz-Hitzky,
• Pilar Aranda,
• Marwa Akkari,
• Nithima Khaorapapong and
• Makoto Ogawa

Beilstein J. Nanotechnol. 2019, 10, 1140–1156, doi:10.3762/bjnano.10.114

• clay surface from precursors dispersed with surfactants [116] or without [129][130], as well as the direct attachment of already formed particles to the clay [118][122]. The characteristics of the resulting materials are strongly influenced by the preparation conditions as the generated NPs show

• Pangel B20, prepared by modification of montmorillonite and sepiolite with cationic surfactants, respectively) during sol-gel process, and ii) selective photodeposition of the noble metal in the previously formed TiO2@clay nanoarchitecture [131]. The good dispersion of the noble-metal NPs, clearly

Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants

• Atiđa Selmani,
• Johannes Lützenkirchen,
• Kristina Kučanda,
• Dario Dabić,
• Engelbert Redel,
• Ida Delač Marion,
• Damir Kralj,
• Darija Domazet Jurašin and
• Maja Dutour Sikirić

Beilstein J. Nanotechnol. 2019, 10, 1024–1037, doi:10.3762/bjnano.10.103

• environmental impact. Due to their high abundance in aqueous environments and their rich technological applicability, surfactants are among the most interesting compounds used for tailoring the stability. The aim of this paper is to determine the influence of surfactant molecular structure on TNW stability

• /aggregation behavior in water and aqueous NaBr solution by dynamic and electrophoretic light scattering. To accomplish this, two structurally different quaternary ammonium surfactants (monomeric DTAB and the corresponding dimeric 12-2-12) at monomer and micellar concentrations were used to investigate TNW

• differences in the intrinsic log K values, it was shown that 12-2-12 interacts more strongly with TNWs than DTAB. The modelling results enable a better understanding of the interaction between TNWs and surfactants as well as the prediction of the conditions that can promote stabilization or aggregation

Deposition of metal particles onto semiconductor nanorods using an ionic liquid

• Michael D. Ballentine,
• Elizabeth G. Embry,
• Marco A. Garcia and
• Lawrence J. Hill

Beilstein J. Nanotechnol. 2019, 10, 718–724, doi:10.3762/bjnano.10.71

• an ionic liquid, and the effect this has on catalytic performance. Platinum, gold, and silver nanoparticles were deposited onto CdSe@CdS (core@shell) nanorods from metal salts in an ionic liquid (1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide) without additional surfactants or reducing

• dimensions smaller than 10 nm are commonly reported with small deviations in the distribution of nanorod lengths. Another widely investigated approach to nanoparticle synthesis uses ionic liquids as solvents for the synthesis of nanoparticles without the need for additional stabilizing surfactants [13][14

• without the need for additional surfactants or reducing agents. Results and Discussion CdSe quantum dots and CdSe@CdS nanorods were synthesized using cadmium oxide, octadecylphosphonic acid, hexylphosphonic acid, trioctylphosphine, and trioctylphosphine oxide based on methods reported by Manna et al. and

Ultrathin hydrophobic films based on the metal organic framework UiO-66-COOH(Zr)

• Miguel A. Andrés,
• Clemence Sicard,
• Christian Serre,
• Olivier Roubeau and
• Ignacio Gascón

Beilstein J. Nanotechnol. 2019, 10, 654–665, doi:10.3762/bjnano.10.65

• ≈200 nm have been synthesized and assembled at the air–water interface by the Langmuir–Blodgett technique. The use of different solvents, mixtures of solvents and surfactants has been investigated in order to improve the stability of MOF dispersions and reduce particle aggregation. The compact MOF

• -designed manner to form pores and/or channels of desired dimensions [1]. These materials tend to have a very high surface area and present several advantages compared to traditional porous inorganic materials, including chemical diversity and good compatibility with polymers and surfactants [2][3

• (Zr) with free pendant –COOH groups also fulfills this requirement. Firstly, the effect of using different solvents (or mixtures of solvents) for the preparation of MOF dispersions has been investigated. Additionally, different amounts of two well-known surfactants that form stable and compact

Topochemical engineering of composite hybrid fibers using layered double hydroxides and abietic acid

• Liji Sobhana,
• Lokesh Kesavan,
• Jan Gustafsson and
• Pedro Fardim

Beilstein J. Nanotechnol. 2019, 10, 589–605, doi:10.3762/bjnano.10.60

• esterification or etherification, and (2) physical methods such as composite development using hydrophobic moieties of silicones, fluorocarbons, or surfactants. The physical methods employed to make cellulose hydrophobic were applied only to regenerated cellulose and not to pristine wet-state cellulose. Our

• earlier reported work directly utilized the wet pulp fibers without any prior treatment. Moreover, anionic surfactants cause environmental pollution when the resultant acidic materials are washed out. Therefore, the choice of stearic acid was motivated by green-chemistry principles. This method differed

pH-mediated control over the mesostructure of ordered mesoporous materials templated by polyion complex micelles

• Emilie Molina,
• Mélody Mathonnat,
• Jason Richard,
• Patrick Lacroix-Desmazes,
• Martin In,
• Philippe Dieudonné,
• Thomas Cacciaguerra,
• Corine Gérardin and
• Nathalie Marcotte

Beilstein J. Nanotechnol. 2019, 10, 144–156, doi:10.3762/bjnano.10.14

• , silica-based ordered mesoporous materials (OMMs) have attracted considerable attention in various fields such as adsorption, separation and catalysis. The formation of these mesostructures relies on a supramolecular assembly process between silicic species and surfactants or amphiphilic block copolymers

• formation of thermally and mechanically stable materials with larger pore sizes and thicker walls than those obtained with surfactants. This opens up the possibility of easily functionalizing them and tailoring the mesopore arrangement into various ordered mesostructures [7]. This is especially true as long

• curvature of the mesostructure as a function of pH up to 6.9. Such an influence of the solution pH on the variation of mesostructure and mesopore size has also been reported with non-ionic surfactants/copolymers [11][20][35][36] and ionic cetyltrimethylammonium. [37] The up-curvature observed at p/p0 > 0.85

A novel polyhedral oligomeric silsesquioxane-modified layered double hydroxide: preparation, characterization and properties

• Xianwei Zhang,
• Zhongzhu Ma,
• Hong Fan,
• Carla Bittencourt,
• Jintao Wan and
• Philippe Dubois

Beilstein J. Nanotechnol. 2018, 9, 3053–3068, doi:10.3762/bjnano.9.284

• nanofillers. So far, many organic modifiers have been successfully used to modify LDHs. One of the most commonly used is sodium dodecylbenzene sulfonate (SDBS) [7][14]. Other modifiers include a variety of sulfate and phosphate surfactants [15][16][17], aliphatic and aromatic mono- and dicarboxylic acids [18

• . In contrast, the LDH modified with OCPS seems to have a denser interlayer packing. Previous literature suggests that the intercalation with linear organic molecules, e.g., surfactants, into pristine LDH can significantly weaken the hydrogen-bonding interactions between interlayer water, interlayer

Accurate control of the covalent functionalization of single-walled carbon nanotubes for the electro-enzymatically controlled oxidation of biomolecules

• Naoual Allali,
• Veronika Urbanova,
• Mathieu Etienne,
• Xavier Devaux,
• Martine Mallet,
• Brigitte Vigolo,
• Jean-Joseph Adjizian,
• Chris P. Ewels,
• Sven Oberg,
• Alexander V. Soldatov,
• Edward McRae,
• Yves Fort,
• Manuel Dossot and
• Victor Mamane

Beilstein J. Nanotechnol. 2018, 9, 2750–2762, doi:10.3762/bjnano.9.257

• putting oxidative defects on their sidewalls and extremities to decrease their hydrophobicity, ii) to use non-covalent interaction with hydrophilic biomolecules or surfactants [15][16][17][18] or iii) to use covalently grafted polyethyleneglycol (PEG) linkers, as described by us [9][11][12]. Many studies

Droplet-based synthesis of homogeneous magnetic iron oxide nanoparticles

• Christian D. Ahrberg,
• Ji Wook Choi and
• Bong Geun Chung

Beilstein J. Nanotechnol. 2018, 9, 2413–2420, doi:10.3762/bjnano.9.226

• File 1, and Supporting Information File 2). After internal mixing the droplets showed a homogenous red color. To stabilize the droplets in the tubing, two surfactants (Abil EM 90 and Triton X-100) were added to the mineral oil phase. The concentration of the surfactants was chosen in such a manner that

Block copolymers for designing nanostructured porous coatings

• Roberto Nisticò

Beilstein J. Nanotechnol. 2018, 9, 2332–2344, doi:10.3762/bjnano.9.218

• leaving the PEO domains visible (and forming a porous structure). Analogous results were also obtained for cobalt onto PS-b-PEO [100]. Concerning the soft-templating route, usually the most diffuse porogens used are surfactants: small molecules characterized by having both polar (head) and apolar (tail

• ) parts linked together by chemical bonds [101]. Analogous to surfactants, even amphiphilic block copolymers (such as the PS-b-PEO ones) can be used as templating agents [4]. As reported by Yu and co-workers [102], PS-b-PEO copolymers were used for the production of mesoporous silica films where a cubic

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

• near the hydrophobic core, whereas the shell, which is composed of hydrophilic groups, ensures the stability of the system in solution. Examples for these amphiphilic compounds are surfactants [1], liposomes [2], polymers [3], and synthetic macrocycles [4]. Calixarenes and calixresorcinarenes are

• fragments [32] and appear due to the reaction conditions (see Experimental section). Because of the presence of mPEG groups, compound 3 can be considered a non-ionic surfactant. It is known, that in aqueous solutions of non-ionic surfactants increasing temperatures leads to phase separation. There are two

Fabrication of photothermally active poly(vinyl alcohol) films with gold nanostars for antibacterial applications

• Mykola Borzenkov,
• Maria Moros,
• Claudia Tortiglione,
• Serena Bertoldi,
• Nicola Contessi,
• Silvia Faré,
• Angelo Taglietti,
• Agnese D’Agostino,
• Piersandro Pallavicini,
• Maddalena Collini and
• Giuseppe Chirico

Beilstein J. Nanotechnol. 2018, 9, 2040–2048, doi:10.3762/bjnano.9.193

• surfactants, they were coated with either SH-PEG5000–OCH3 or SH-PEG5000–COOH before being incorporated in the PVA matrix, as PEGylation of gold nanostars leads to enhanced stability [9][10] and complete surfactant removal [6][8].The aqueous solutions of PEGylated GNSs were prepared with 0.6 mg/mL Au

Synthesis of rare-earth metal and rare-earth metal-fluoride nanoparticles in ionic liquids and propylene carbonate

• Marvin Siebels,
• Lukas Mai,
• Laura Schmolke,
• Kai Schütte,
• Juri Barthel,
• Junpei Yue,
• Jörg Thomas,
• Bernd M. Smarsly,
• Anjana Devi,
• Roland A. Fischer and
• Christoph Janiak

Beilstein J. Nanotechnol. 2018, 9, 1881–1894, doi:10.3762/bjnano.9.180

• . Microwave heating and employing suitable ILs and PC as inert reaction media proved to be crucial. Ionic liquids are used as stabilizing reagents and as solvents in syntheses of nanoparticles [27][28][29][30][31]. In contrast to conventional stabilizers, such as surfactants or polymers, the ILs stabilize the

A simple extension of the commonly used fitting equation for oscillatory structural forces in case of silica nanoparticle suspensions

• Sebastian Schön and
• Regine von Klitzing

Beilstein J. Nanotechnol. 2018, 9, 1095–1107, doi:10.3762/bjnano.9.101

• , roughness [37] and or potential [38], or addition of varying surfactants [39]. Oscillatory structural forces can be described either theoretically via the solutions of numerical simulations [34][40][41][42] or statistical mechanics equations [43][44][45][46][47][48][49][50] or with a semi empirical approach