Cyclodextrins as eminent constituents in nanoarchitectonics for drug delivery systems

• Makoto Komiyama

Beilstein J. Nanotechnol. 2023, 14, 218–232, doi:10.3762/bjnano.14.21

• photocatalytic process destroy subcellular structures (e.g., cell membranes or organelle membranes). Various types of cancers are effectively treatable without significant side effects. However, most photosensitizers available at present are hydrophobic and easily aggregate in aqueous solution. Thus, the

A novel approach to pulsed laser deposition of platinum catalyst on carbon particles for use in polymer electrolyte membrane fuel cells

• Bogusław Budner,
• Wojciech Tokarz,
• Sławomir Dyjak,
• Andrzej Czerwiński,
• Bartosz Bartosewicz and
• Bartłomiej Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 190–204, doi:10.3762/bjnano.14.19

• dark-grey powder was collected from the crucible and purified by stirring in an aqueous solution of hydrochloric acid (20 wt %) at boiling point (to remove MgO, CaO, and other byproducts of the combustion soluble in acids). After acid treatment, the black powder was filtered, washed with distilled

Structural, optical, and bioimaging characterization of carbon quantum dots solvothermally synthesized from o-phenylenediamine

• Zoran M. Marković,
• Milica D. Budimir,
• Martin Danko,
• Dušan D. Milivojević,
• Pavel Kubat,
• Danica Z. Zmejkoski,
• Vladimir B. Pavlović,
• Marija M. Mojsin,
• Milena J. Stevanović and
• Biljana M. Todorović Marković

Beilstein J. Nanotechnol. 2023, 14, 165–174, doi:10.3762/bjnano.14.17

• 5% CO2. 5 × 104 Hela cells were seeded on cover slips in 12-well plates and incubated overnight to allow cells to attach. The next day, cells were treated with medium containing aqueous solution of CQDs at a final concentration of 200 µg/mL (deionized water was used as a negative vehicle control

Liquid phase exfoliation of talc: effect of the medium on flake size and shape

• Samuel M. Sousa,
• Helane L. O. Morais,
• Joyce C. C. Santos,
• Ana Paula M. Barboza,
• Bernardo R. A. Neves,
• Elisângela S. Pinto and
• Mariana C. Prado

Beilstein J. Nanotechnol. 2023, 14, 68–78, doi:10.3762/bjnano.14.8

• Waals heterostructures. Being able to scale the production is a crucial step to realizing applications at an industrial level. We present the results of liquid-phase exfoliation of talc using different liquid media, namely sodium cholate aqueous solution (6 mg/mL and 1 mg/mL), Triton X-100 aqueous

• most symmetrical are those of butanone and Triton X-100. All comparisons can be found in Table 3. Finally, let us analyze advantages and drawbacks of each sample. An aqueous solution of 6 mg/mL sodium cholate is a widely recommended medium for liquid exfoliation [6][11]. For talc, it does yield the

• acceleration and duration, and sample deposition) were kept constant. Four different media were employed to exfoliate talc. Aqueous solutions of sodium cholate at 1 and 6 mg/mL (with the talc powder concentration adapted to keep the cholate/talc ratio constant), an aqueous solution of Triton-X100, and pure

Solvent-induced assembly of mono- and divalent silica nanoparticles

• Bin Liu,
• Etienne Duguet and
• Serge Ravaine

Beilstein J. Nanotechnol. 2023, 14, 52–60, doi:10.3762/bjnano.14.6

• a NaCl aqueous solution) was added dropwise under stirring into the THF dispersion of 1-PSN to reach the targeted volume fraction and a total volume of 1 mL. It took about 20 s to add 100 μL. Assembled structures were monitored by collecting 50 µL samples at various incubation times and direct

Single-step extraction of small-diameter single-walled carbon nanotubes in the presence of riboflavin

• Polina M. Kalachikova,
• Anastasia E. Goldt,
• Eldar M. Khabushev,
• Timofei V. Eremin,
• Timofei S. Zatsepin,
• Elena D. Obraztsova,
• Konstantin V. Larionov,
• Liubov Yu. Antipina,
• Pavel B. Sorokin and
• Albert G. Nasibulin

Beilstein J. Nanotechnol. 2022, 13, 1564–1571, doi:10.3762/bjnano.13.130

• novel approach to disperse and extract small-diameter single-walled carbon nanotubes (SWCNTs) using an aqueous solution of riboflavin and Sephacryl gel. The extraction of small-diameter semiconducting SWCNTs was observed, regardless of the initial diameter distribution of the SWCNTs. Dispersion of

• be attributed to solvatochromism induced by noncovalent interactions between nanotubes and the aromatic isoalloxazine moiety of riboflavin in aqueous solution. The PL map of the first eluted fraction of Tuball in riboflavin-separated dispersion (Figure 3b and Figure S2, Supporting Information File 1

• to its low solubility in water, which leads to poor solubilization of SWCNT bundles. Lower riboflavin concentrations did not affect the dispersion process of nanotubes in any way. To analyze the dispersing ability of riboflavin, the same amount of SWCNTs was dispersed in 1% w/w SDS aqueous solution

Non-stoichiometric magnetite as catalyst for the photocatalytic degradation of phenol and 2,6-dibromo-4-methylphenol – a new approach in water treatment

• Joanna Kisała,
• Anna Tomaszewska and
• Przemysław Kolek

Beilstein J. Nanotechnol. 2022, 13, 1531–1540, doi:10.3762/bjnano.13.126

• the adsorption of organic compounds onto the surface of the catalyst. The sorption power depends largely on the properties of the organic molecule in question, as well as on the properties of the catalyst’s surface. The test reactions were carried out in aqueous solution at pH 8 (due to the hydrolytic

Hydroxyapatite–bioglass nanocomposites: Structural, mechanical, and biological aspects

• Olga Shikimaka,
• Mihaela Bivol,
• Bogdan A. Sava,
• Marius Dumitru,
• Christu Tardei,
• Beatrice G. Sbarcea,
• Daria Grabco,
• Constantin Pyrtsac,
• Daria Topal,
• Andrian Prisacaru,
• Vitalie Cobzac and
• Viorel Nacu

Beilstein J. Nanotechnol. 2022, 13, 1490–1504, doi:10.3762/bjnano.13.123

• obtained bioglass in an agate mortar. (vii) Sieving of the BG powder to obtain powder of particle sizes below 64 μm. The HA-BG composites were obtained by mixing 90 or 95 wt % of HA (HAP or HAG) powder with, respectively, 10 or 5 wt % of BG powder. An aqueous solution of 7% polyvinyl alcohol (PVA) was

Rapid and sensitive detection of box turtles using an electrochemical DNA biosensor based on a gold/graphene nanocomposite

• Abu Hashem,
• M. A. Motalib Hossain,
• Ab Rahman Marlinda,
• Mohammad Al Mamun,
• Khanom Simarani and
• Mohd Rafie Johan

Beilstein J. Nanotechnol. 2022, 13, 1458–1472, doi:10.3762/bjnano.13.120

• ). Electrochemical characterisation of screen-printed carbon electrodes Figure 3b shows the CV behaviour of SPCE and different modified SPCEs with 2 mM of a [Fe(CN)6]3−/4− aqueous solution in 0.2 M KCl at a scan rate of 100 mV/S. Compared with bare SPCE, the peak currents of Gr/SPCE and AuNPs/SPCE considerably

Supramolecular assembly of pentamidine and polymeric cyclodextrin bimetallic core–shell nanoarchitectures

• Alexandru-Milentie Hada,
• Nina Burduja,
• Marco Abbate,
• Claudio Stagno,
• Guy Caljon,
• Louis Maes,
• Nicola Micale,
• Massimiliano Cordaro,
• Angela Scala,
• Antonino Mazzaglia and
• Anna Piperno

Beilstein J. Nanotechnol. 2022, 13, 1361–1369, doi:10.3762/bjnano.13.112

• nanoGS were prepared according to previously reported procedure [14]. Briefly, an aqueous solution of nanoG was prepared by mixing 1.5 mL of 10−3 M HAuCl4 and 9 mL of PolyCD aqueous solution (2 mg/mL water for HPLC) previously sonicated for 2 min and leaving the solution under stirring for 3 h, keeping

• temperature for 15 h. In vitro antileishmanial activity and cytotoxicity For the antileishmanial activity, nanoG, nanoGS, and nanoGSP (all of them in aqueous solution) were evaluated in vitro against L. infantum MHOM/MA (BE)/67 intracellular amastigotes. The aqueous sample solutions (nanoG = 28.17 μg/mL of Au

• ) in ultrapure aqueous solution, Pent solution in ethanol (green line, 52.5 µg/mL) d = 0.2 cm. (C) Size distribution (or DH) of nanoGS (red line) and nanoGSP (purple line) in a molar ratio of CD/Pent 1:1 in ultrapure water at 25 °C. Informative changes evidenced in the range of 3.2–4.2 ppm and 60.04

Studies of probe tip materials by atomic force microscopy: a review

• Ke Xu and
• Yuzhe Liu

Beilstein J. Nanotechnol. 2022, 13, 1256–1267, doi:10.3762/bjnano.13.104

• surface of nano-, micron, and micro- and nanocomposite structures. In this study, ten μm diameter silica spheres were selected as the particles for the colloidal probe and dispersed into an aqueous solution and sonicated for five minutes. A small amount of the dispersed liquid was removed and added

Green synthesis of zinc oxide nanoparticles toward highly efficient photocatalysis and antibacterial application

• Vo Thi Thu Nhu,
• Nguyen Duy Dat,
• Le-Minh Tam and
• Nguyen Hoang Phuong

Beilstein J. Nanotechnol. 2022, 13, 1108–1119, doi:10.3762/bjnano.13.94

• ), indicating that ZnO NPs are negatively charged and stable in aqueous solution. Photocatalytic degradation of dyes The photocatalytic degradation of ZnO NPs was evaluated through the degradation of methylene blue and methyl orange under visible and UV light and the degradation efficiency was calculated via

Recent advances in green carbon dots (2015–2022): synthesis, metal ion sensing, and biological applications

• Aisha Kanwal,
• Naheed Bibi,
• Sajjad Hyder,
• Arif Muhammad,
• Hao Ren,
• Jiangtao Liu and
• Zhongli Lei

Beilstein J. Nanotechnol. 2022, 13, 1068–1107, doi:10.3762/bjnano.13.93

• , patterning, and sensing, as a result of their advantageous characteristics [125]. Han and co-workers extracted cow milk-derived CDs (CM-CDs) from aqueous solution using ethyl acetate to create amphiphilic CM-CDs (ACMCDs). A unique ACMCD-Ag/polymethylmethacrylate antibacterial film was produced utilizing the

• , and they were effectively used for Cu2+ detection, which was attributed to the fluorescence quenching effect of the ions [128]. A unique and quick microwave-assisted method that requires two steps was reported by Pires for the synthesis of CDs with an average size of 9 nm from an aqueous solution of a

Solar-light-driven LaFe_xNi_1−xO₃ perovskite oxides for photocatalytic Fenton-like reaction to degrade organic pollutants

• Chao-Wei Huang,
• Shu-Yu Hsu,
• Jun-Han Lin,
• Yun Jhou,
• Wei-Yu Chen,
• Kun-Yi Andrew Lin,
• Yu-Tang Lin and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 882–895, doi:10.3762/bjnano.13.79

• remaining in the aqueous solution during the textile process. The amount of dye wastewater is enormous and has gradually become the main wastewater discharged in the industry [6]. At present, dyes are mainly divided into azo dyes, thiazine dyes, acridine dyes, and aryl methane dyes. Due to their complex

• various photocatalysts prepared at pH 0 or pH 7 The standard concentration of MB aqueous solution was prepared at 20 ppm. Various LaFexNi1−xO3 perovskite oxides prepared at pH 0 were examined for dark adsorption and photocatalytic degradation. First, dark adsorption was not significant for all perovskite

• area and crystal diameters. A larger surface area would enhance the surface reaction with the aqueous solution, and larger crystal diameters could decrease the possibility of recombining electron-and-hole pairs. However, while the Fe doped content was set at 90%, replacing Ni, the photocatalytic

Gelatin nanoparticles with tunable mechanical properties: effect of crosslinking time and loading

• Agnes-Valencia Weiss,
• Daniel Schorr,
• Julia K. Metz,
• Metin Yildirim,
• Saeed Ahmad Khan and
• Marc Schneider

Beilstein J. Nanotechnol. 2022, 13, 778–787, doi:10.3762/bjnano.13.68

• , Singen, Germany) at a frequency of 37 kHz in pure ethanol for 5 min. Subsequently, wafers were dried under a flow of nitrogen and covered with an 1% aqueous solution of branched polyethyleneimine (PEI), 25 kDa, for 15 min. To remove unbound PEI, the wafers were rinsed with deionized water. Coated wafers

Hierarchical Bi₂WO₆/TiO₂-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

• Zehao Lin,
• Zhan Yang and
• Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762, doi:10.3762/bjnano.13.66

• × 1.0 cm2) and saturated calomel electrode (SCE) were used as the reference and counter electrodes, respectively. The Na2SO4 aqueous solution (0.5 M) was employed as the electrolyte and a xenon lamp with a 420 nm cutoff filter was used as the light source. The corresponding sample (5.0 mg) was

• pollutant solution was taken out at set intervals to determine the concentration variation of the pollutant solution. Cr(VI) and RhB were chosen as pollutant representatives, and the concentration of the RhB aqueous solution was measured by the absorbance at λ = 553 nm, analyzed through a Shimadzu UV-2450

• spectrophotometer. The concentration of the Cr(VI) aqueous solution was determined by the diphenylcarbazide colorimetric method as follows. 1,5-diphenylcarbazide (0.2 g) was dissolved in acetone/water (100.0 mL, v/v = 1:1) to form solution A, while H3PO4 (20.0 mL) and H2SO4 (20.0 mL) were homogeneously mixed in

Antibacterial activity of a berberine nanoformulation

• Hue Thi Nguyen,
• Tuyet Nhung Pham,
• Anh-Tuan Le,
• Nguyen Thanh Thuy,
• Tran Quang Huy and
• Thuy Thi Thu Nguyen

Beilstein J. Nanotechnol. 2022, 13, 641–652, doi:10.3762/bjnano.13.56

• BBR was significantly enhanced. The concentration of BBR NPs in aqueous solution (3.0 mg/mL) was higher than the saturation concentration of the precursor BBR (lower than 2.0 mg/mL). A notable increase in the antibacterial activity of BBR NPs against representative Gram-positive (MRSA) and Gram

• transmission electron microscopy (TEM, JEM1010, JEOL). The dynamic average size distribution and the stability of the prepared BBR NPs in aqueous solution were evaluated by dynamic light scattering (DLS) using a Zetasizer Nano ZS, Malvern Instruments. Antibacterial activity of BBR NPs The antibacterial

Fabrication and testing of polymer microneedles for transdermal drug delivery

• Vahid Ebrahiminejad,
• Zahra Faraji Rad,
• Philip D. Prewett and
• Graham J. Davies

Beilstein J. Nanotechnol. 2022, 13, 629–640, doi:10.3762/bjnano.13.55

• to remove the fat layer to the thickness of 3 ± 0.1 mm [31], and thawed before insertion testing on a 3D printed stretching mechanism to mimic skin in vivo conditions (Figure 2a). The MN arrays were initially oxygen plasma cleaned for 1 minute before dip coating with a concentrated aqueous solution

Comparative molecular dynamics simulations of thermal conductivities of aqueous and hydrocarbon nanofluids

• Adil Loya,
• Antash Najib,
• Fahad Aziz,
• Asif Khan,
• Guogang Ren and
• Kun Luo

Beilstein J. Nanotechnol. 2022, 13, 620–628, doi:10.3762/bjnano.13.54

• constructed with 36 CuO molecules bonded by the COMPASS force field. This constructed nanoparticle size was 0.4 nm, as shown in Figure 1b. A molecular dynamics simulation of paraffin (i.e., eicosane C20H42) was also conducted for comparison with the aqueous solution. In the alkane/CuO nanofluid simulation

• thermal properties of the studied systems. The thermal conductivity of water/CuO nanofluids is significantly higher than that of nonpolar nanofluids. It was also found that due to higher velocities, intermolecular collisions and high kinetics of metal oxide atoms happen in aqueous solution, which results

A new method for obtaining the magnetic shape anisotropy directly from electron tomography images

• Cristian Radu,
• Ioana D. Vlaicu and
• Andrei C. Kuncser

Beilstein J. Nanotechnol. 2022, 13, 590–598, doi:10.3762/bjnano.13.51

• analysis, 28–30 wt % solution of NH3 in water, Acros Organics). The preparation of the MNPs was performed by reverse precipitation, in which an aqueous solution (50 mL) of FeSO4 with the surfactant CTAB (2:1, mass ratio) was slowly dripped into a 50 mL basic solution of NaOH and NH4OH. The solution turned

Stimuli-responsive polypeptide nanogels for trypsin inhibition

• Petr Šálek,
• Jana Dvořáková,
• Sviatoslav Hladysh,
• Diana Oleshchuk,
• Ewa Pavlova,
• Jan Kučka and
• Vladimír Proks

Beilstein J. Nanotechnol. 2022, 13, 538–548, doi:10.3762/bjnano.13.45

• solution. The surfactants SPAN 80 (0.855 g) and TWEEN 85 (0.045 g) were dissolved in CHX (20.4 g) and mixed with the aqueous solution of PHEG-Tyr with HRP. This two-phase system was cooled to 0 °C and dispersed using a UP200Ht ultrasonic processor equipped with a sonotrode S26d7 (Hielscher Ultrasonics GmbH

• crosslinking in inverse miniemulsion by modification of an earlier procedure [24]. Briefly, PHEG-Tyr (0.18 g) was dissolved in Q-H2O (4 g) in a round-bottom glass flask for 24 h at room temperature under magnetic stirring. Then, HRP (0.450 mg) was dissolved in Q-H2O (0.32 g) and added to the PHEG-Tyr aqueous

Design and characterization of polymeric microneedles containing extracts of Brazilian green propolis

• Camila Felix Vecchi,
• Rafaela Said dos Santos,
• Jéssica Bassi da Silva and
• Marcos Luciano Bruschi

Beilstein J. Nanotechnol. 2022, 13, 503–516, doi:10.3762/bjnano.13.42

• extraction. The ethanolic extract (EE) was obtained using ethanol 96° GL and the comminuted drug with a drug/solvent (w/w) ratio of 3:7. The glycolic extract (GE) was prepared using the comminuted drug and an aqueous solution of propylene glycol 50% (w/w) and the same drug/solvent (w/w) ratio of 3:7. The

The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks

• Ali Javed,
• Felix Steinke,
• Stephan Wöhlbrandt,
• Hana Bunzen,
• Norbert Stock and
• Michael Tiemann

Beilstein J. Nanotechnol. 2022, 13, 437–443, doi:10.3762/bjnano.13.36

• , followed by phosphonomethylation of the amino group using phosphonic acid, formaldehyde, and hydrochloric acid. The synthesis of the compounds [Mg(H2O)2(H3L)]·H2O and [Pb2(HL)]·H2O was achieved following published procedures [17]. For [Mg(H2O)2(H3L)]·H2O, an aqueous solution of MgCl2 (6 mmol, 1218 mg in 2

• mL H2O) was added to a mixture of the linker molecule (564 mg, 1.5 mmol), 1.5 mL of an aqueous solution of NaOH (c = 2 mol/L), 6.5 mL water, and 10 mL ethanol in a 30 mL Teflon insert, which was placed into a steel autoclave. For [Pb2(HL)]·H2O, Pb(OAc)3 (0.5 mmol, 189 mg in 2 mL H2O) was added to a

Interfacial nanoarchitectonics for ZIF-8 membranes with enhanced gas separation

• Season S. Chen,
• Zhen-Jie Yang,
• Chia-Hao Chang,
• Hoong-Uei Koh,
• Sameerah I. Al-Saeedi,
• Kuo-Lun Tung and
• Kevin C.-W. Wu

Beilstein J. Nanotechnol. 2022, 13, 313–324, doi:10.3762/bjnano.13.26

• aqueous solution (50 mL) in an Erlenmeyer flask. The flask was connected to an aspirator to provide a vacuum to remove the air inside the pores of the disk. Then, the disk was kept in the aqueous solution for another 30 min until the porous support was fully filled with zinc nitrate. The α-Al2O3 disk was

• increased to 50 mM, a continuous ZIF-8 film with a high surface coverage was obtained (Figure 5b). In this case, the diffusion rate of 2-methylimidazole from 1-octanol solution into aqueous solution was relatively slow. As a result, homogeneous crystal formation was suppressed through the small number of

Coordination-assembled myricetin nanoarchitectonics for sustainably scavenging free radicals

• Xiaoyan Ma,
• Haoning Gong,
• Kenji Ogino,
• Xuehai Yan and
• Ruirui Xing

Beilstein J. Nanotechnol. 2022, 13, 284–291, doi:10.3762/bjnano.13.23

• ) FTIR spectra of MZG, GSH, and Myr. (e) Stability evaluation of MZG nanoparticles during incubation in aqueous solution at 37 °C for 24 h. (f) Stability evaluation of MZG nanoparticles during incubation in the mixture medium of PBS containing 9% DMEM and 1% FBS (v/v) at 37 °C for 24 h (equivalent