Humidity-dependent electrical performance of CuO nanowire networks studied by electrochemical impedance spectroscopy

• Jelena Kosmaca,
• Juris Katkevics,
• Jana Andzane,
• Raitis Sondors,
• Liga Jasulaneca,
• Raimonds Meija,
• Kiryl Niherysh,
• Yelyzaveta Rublova and
• Donats Erts

Beilstein J. Nanotechnol. 2023, 14, 683–691, doi:10.3762/bjnano.14.54

• effect of humidity on dielectrophoretically assembled CuO nanowire network systems with multiple interconnects, which may become very advantageous for the scalable assembly of CuO nanowire-based devices as NEMS [5], sensors [2], and thermoelectric modules [4], is yet to be reported. In this work, CuO

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

• extremely low densities (0.1–1 g·cm−3), the highest specific surface areas (165–7800 m2·g−1) currently known, tunable surface properties, good mechanical and thermal stability, intriguing and controllable morphologies, and uniform yet tunable pores that are created by the self-assembly of metal ions or

Nanoarchitectonics to entrap living cells in silica-based systems: encapsulations with yolk–shell and sepiolite nanomaterials

• Celia Martín-Morales,
• Jorge Fernández-Méndez,
• Pilar Aranda and
• Eduardo Ruiz-Hitzky

Beilstein J. Nanotechnol. 2023, 14, 522–534, doi:10.3762/bjnano.14.43

• assembly of biological and inorganic components is being increasingly developed with the aim of achieving high-quality functional materials exhibiting properties of living species, but entrapped within inorganic solid structures [2][3]. When such assembly processes are carried out at the nanometre scale

• nanoarchitectonics approach involves the manipulation at the nanometre or molecular level, using chemical reactions, processes of self-assembly and self-organization, as well as modulation under external stimuli. This strategy represents a path of great interest to develop new biohybrid materials harbouring

• systems studied during the past decades were based on the encapsulation of enzymes and yeast spores within silica gels for the design of biosensors and bioreactors [9][10][11][12]. Biological entities can be considered themselves excellent examples of self-assembly occurring in nature [13]. Based on these

Specific absorption rate of randomly oriented magnetic nanoparticles in a static magnetic field

• Ruslan A. Rytov and
• Nikolai A. Usov

Beilstein J. Nanotechnol. 2023, 14, 485–493, doi:10.3762/bjnano.14.39

• amplitude, Hac = 100–200 Oe [1][7][8]. In magnetic hyperthermia, magnetic nanoparticles are introduced into the tumor and heated by absorbing the energy of the ac magnetic field. The intensity of heat release is characterized by the specific absorption rate (SAR) of an assembly. Maintaining a temperature in

• hysteresis loops of assemblies under the influence of ac and dc magnetic fields were carried out in [13][14]. It was shown [13] that an application of dc magnetic fields with Hdc ≥ 400 Oe is sufficient to completely suppress the SAR of an assembly of FeCo nanoparticles. It was also found [14] that for

• biological media can be considered fixed and random. In this case, the dynamics of the assembly magnetization depends on the parameters of the external magnetic field, as well as on the magnetic and geometric parameters of an assembly [20][22][25][26]. To develop the joint MPI-MH technique, it is necessary

Molecular nanoarchitectonics: unification of nanotechnology and molecular/materials science

• Katsuhiko Ariga

Beilstein J. Nanotechnol. 2023, 14, 434–453, doi:10.3762/bjnano.14.35

• imaging at the atomic and molecular level has revealed the self-assembly mechanisms of crystal nuclei in organic crystals and metal-organic frameworks [42]. It has become possible to obtain statistical information on the size and structure of individual prenucleation clusters that cannot be examined by

• , fabrication engineering, and bio-related science (Figure 1) [51][52]. Materials synthesis by nanoarchitectonics is envisioned to integrate and use various processes [53]. For example, physical/chemical material transformation, atomic/molecular manipulation, self-assembly/self-organization, arrangement and

• asymmetric and hierarchical. Compared to structures created by self-assembly based on simple equilibrium processes, more hierarchical and complex structures are obtained in nanoarchitectonics processes [54]. In addition, several uncertainties in the nanoscale world from which architectures are derived have a

Plasmonic nanotechnology for photothermal applications – an evaluation

• A. R. Indhu,
• L. Keerthana and
• Gnanaprakash Dharmalingam

Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33

New trends in nanobiotechnology

• Pau-Loke Show,
• Kit Wayne Chew,
• Wee-Jun Ong,
• Sunita Varjani and
• Joon Ching Juan

Beilstein J. Nanotechnol. 2023, 14, 377–379, doi:10.3762/bjnano.14.32

• -assembly; wet chemical reduction; The widespread use of nanotechnology has reached almost every sector in our daily lives and amazed the world by offering various potential applications in these sectors. The uprising wave of nanotechnology and its application are now prominent in the fields of chemistry

• biocompatibility of the nanomaterials is also discussed. The thematic issue also recorded a work on the topic of “Self-assembly of amino acids toward functional biomaterials” [5], where the role of biomaterials in nanobiotechnology is discussed. In this review, the latest advances in amino acid self-assembly and

• properties associated with the process and yielded products are highlighted. The self-assembly methods in focus included single amino acid self-assembly, functional amino acid self-assembly, amino acid and metal ion coordination self-assembly, and amino acid regulatory functional molecule self-assembly. Many

Biocatalytic synthesis and ordered self-assembly of silica nanoparticles via a silica-binding peptide

• Mustafa Gungormus

Beilstein J. Nanotechnol. 2023, 14, 280–290, doi:10.3762/bjnano.14.25

• and proteins, have been demonstrated to be useful in the synthesis and self-assembly of inorganic nanostructures. Herein, we describe a simple Stöber-based method wherein both the synthesis and the self-assembly of SiO2 nanoparticles can be facilitated by a silica-binding peptide (SiBP). We

• with NH3, the SiBP produces smaller and more uniformly distributed submicrometer particles. The SiBP also improves the long-range self-assembly of the as-grown particles into an opal-like structure by changing the surface charge, without any need for further modification or processing of the particles

• . The results presented here provide a biomimetic route to the single-step synthesis and assembly of SiO2 nanoparticles into colloidal gels or opal-like structures. Keywords: biocatalysis; biomimetics; nanoparticle; peptide; self-assembly; silica; Introduction Ordered structures of nanoparticles have

Nanotechnology – a robust tool for fighting the challenges of drug resistance in non-small cell lung cancer

• Filip Gorachinov,
• Fatima Mraiche,
• Diala Alhaj Moustafa,
• Ola Hishari,
• Yomna Ismail,
• Jensa Joseph,
• Maja Simonoska Crcarevska,
• Marija Glavas Dodov,
• Nikola Geskovski and
• Katerina Goracinova

Beilstein J. Nanotechnol. 2023, 14, 240–261, doi:10.3762/bjnano.14.23

• subcellular targeting, were synthesized by click coupling reactions or arranged by self-assembly and co-assembly of block copolymers. These carriers may challenge different barriers after bioresponsive cleavage of the above functionalities. One recently published example involves a micellar structure composed

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

• inclusion complex (thus, the ternary assembly is also disassembled). As the result, the siRNA cargo is released and shows excellent cytotoxicity against cancer cells. In Figure 5, NIR light is used (instead of UV in Figure 4) to release siRNA at the target site. As described in section 2.3, the NIR

• inclusion complexes with β-CyD. Hence, the whole assembly spontaneously dissociated (Figure 5b). Furthermore, the azo groups were exposed to cytoplasm during the dissociation of nanoparticles and digested by the enzyme azoreductase. This unique enzyme is abundant in the cells of eukaryotes and degrades azo

• , this method is less affected by drug resistance and side-effects. A hydrogel was prepared by using both the electrostatic self-assembly between graphene oxide and a quaternized polymer and the formation of a pseudopolyrotaxane between α-CyD and poly(ethylene glycol) monomethyl ether (many α-CyD

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

• graphitization were used as carbon supports. The best electrochemical measurement results were obtained for Pt deposited on Vulcan XC-72R. The peak power density measured for this material in a membrane electrode assembly (MEA) of a PEMFC (fed with H2/Air) was 0.41 W/cm2, which is a good result compared to 0.57

• catalysts in a membrane electrode assembly (MEA) of PEMFCs fed with H2/air. The materials with Pt deposited on Vulcan XC-72R (samples A and B), like commercial catalysts, formed a good quality catalyst layer on the Nafion membranes. However, we encountered some issues during electrode preparation from the

• the amount of Pt deposited by PLD. The results of performance tests of Pt-based catalysts conducted in a membrane electrode assembly are shown in Figure 7. Polarization curves shown in Figure 7a are used to assess the influence of cell construction on the value of activation, resistance, and transport

Formation of nanoflowers: Au and Ni silicide cores surrounded by SiO_x branches

• Feitao Li,
• Siyao Wan,
• Dong Wang and
• Peter Schaaf

Beilstein J. Nanotechnol. 2023, 14, 133–140, doi:10.3762/bjnano.14.14

• areas consist of more Si and Ni in 5Au15Ni and 10Au10Ni but less Ni in 15Au5Ni, which has the lowest Ni concentration (Supporting Information File 1, Figure S5). The line structures show epitaxial self-assembly growth and their EDS results show a comparatively high content of Ni apart from Si, which may

Antimicrobial and mechanical properties of functionalized textile by nanoarchitectured photoinduced Ag@polymer coating

• Jessica Plé,
• Marine Dabert,
• Helene Lecoq,
• Sophie Hellé,
• Lydie Ploux and
• Lavinia Balan

Beilstein J. Nanotechnol. 2023, 14, 95–109, doi:10.3762/bjnano.14.11

• properties exhibited by the Ag@polymer-functionalized textiles (Figure 1a and 1b) were then investigated via reflectance measurements. As shown in Figure 3, the Ag@PEG600DA coating is more reflective than the Ag@PEG600DA/PETIA sample (97% and 68% at 650 nm, respectively). Particle assembly and distribution

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

• Particles with attractive patches are appealing candidates to be used as building units to fabricate novel colloidal architectures by self-assembly. Here, we report the synthesis of one-patch silica nanoparticles, which consist of silica half-spheres whose concave face carries in its center a polymeric

• patch made of grafted polystyrene chains. The multistage synthesis allows for a fine control of the patch-to-particle size ratio from 0.23 to 0.57. The assembly of the patchy nanoparticles can be triggered by reducing the solvent quality for the polystyrene chains. Dimers or trimers can be obtained by

• tuning the patch-to-particle size ratio. When mixed with two-patch nanoparticles, one-patch nanoparticles control the length of the resulting chains by behaving as colloidal chain stoppers. The present strategy allows for future elaboration of novel colloidal structures by controlled assembly of

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

• through π–π interaction and with neighboring isoalloxazine groups via hydrogen bonding, promotes the ordered assembly of riboflavin molecules on the surface of SWCNTs [9][17]. Papadimitrakopoulos et al. described the helical wrapping of flavin mononucleotide through π–π interaction between the

• adjacent riboflavin molecules (Figure 5b). As the riboflavin–dextran complex was relaxed, the binding energy between the riboflavin assembly and the dextran molecule was calculated. It was found that in the case of dextran in the top position (Figure 5a), weak van der Waals interactions do not depend

• riboflavin assembly (Figure 5b), different bonding patterns are observed depending on the mutual orientation of the adjacent isoalloxazine moieties. The strength of bonding between neighboring riboflavin molecules is proportional to the type of riboflavin helix around a particular SWCNT. The yield of

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

• monometallic (nanoG) structures or core–shell bimetallic (nanoGS) architectures with an external silver layer. Here, we describe the preparation of a supramolecular assembly between nanoGS and pentamidine, an antileishmanial drug endowed with a wide range of therapeutic properties (i.e., antimicrobial, anti

• -inflammatory, and anticancer). The physicochemical characterization of the supramolecular assembly (nanoGSP) in terms of size and colloidal stability was investigated by complementary spectroscopic techniques, such as UV–vis, ζ-potential, and dynamic light scattering (DLS). Furthermore, the role of PolyCD

• , Figure 1) achieved by supramolecular assembly of the components as well as their physicochemical characterization in terms of size and colloidal stability. The drug binding ability of nanoGS with Pent has been investigated by complementary spectroscopic techniques such as UV–vis, zeta potential (ζ

Near-infrared photoactive Ag-Zn-Ga-S-Se quantum dots for high-performance quantum dot-sensitized solar cells

• Roopakala Kottayi,
• Ilangovan Veerappan and
• Ramadasse Sittaramane

Beilstein J. Nanotechnol. 2022, 13, 1337–1344, doi:10.3762/bjnano.13.110

• 24 h with a MPA/acetonitrile solution 3:7 (v/v). This substrate was then immersed into the colloidal AZGSSe QD solution for 48 h to obtain the AZGSSe-sensitized TiO2 NF-based photoanode. Assembly of QDSCs Earlier reports revealed that Cu2S is a low-cost and efficient counter electrode (CE) for QDSCs

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

• et al. [39] proposed a multistep assembly method to fabricate carbon nanotube tips by developing a well-controlled procedure to fabricate scanning probe carbon nanotube tip microscopes. The process consists of three steps: purification and alignment of nanotubes using electrophoresis; transfer of

• assembly methods, direct growth of carbon nanotubes by chemical vapor deposition (CVD) allows for increased bond strength between CNT tips and AFM probes. A pore growth method was used by Hafner et al. [42]. The method uses AFM imaging in contact mode to flatten the silicon tip, followed by hydrogen

• ethanol solvent. The colloidal particles in the suspension can self-assemble into two- and three-dimensional colloidal crystals of various shapes under certain conditions. In the process of self-assembly, such fibrous colloidal crystals are small in size and usually micrometer in length due to the weak

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

• Yinglin Ma,
• Xiangyun Xiao and
• Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

• are a type of simple natural molecule which is widely applied for the specific recognition of chiral analytes in QCM. The molecular layers of amino acids may be immobilized on the surface of electrodes by chemical modification and self-assembly. Mandelic acid (MA) is an important chiral intermediate

• in the pharmaceutical industry. It has been taken as a model molecule to verify the “proof-of-principle” concept for chiral recognition [28]. Kim and co-workers fabricated ʟ-phenylalanine (ʟ-Phe)-modified QCM sensor and used vapor diffusion molecular assembly (VDMA) to study the chiral adsorption of

• modified QCM sensors [29]. The sensor layers were constructed by self-assembly of ʟ(ᴅ)-Val monolayers or comb-teeth-type grafted polymer brushes with ʟ(ᴅ)-Val. According to the frequency shifts upon bovine serum albumin (BSA) adsorption, ʟ-Val-modified sensors were shown to have a stronger binding to BSA

A cantilever-based, ultrahigh-vacuum, low-temperature scanning probe instrument for multidimensional scanning force microscopy

• Hao Liu,
• Zuned Ahmed,
• Sasa Vranjkovic,
• Manfred Parschau,
• Andrada-Oana Mandru and
• Hans J. Hug

Beilstein J. Nanotechnol. 2022, 13, 1120–1140, doi:10.3762/bjnano.13.95

• containing the xy-positioning unit and the xyz-scan piezo carrying the sample receiver. While four of the six shear piezo stacks are glued to the z-slider unit, the two remaining stacks are glued to a leaf-spring assembly depicted in Figure 4a,b. The central screw (red arrow) pushes the leaf spring against

• the x- and y-sliders, facilitating the setting of a force sufficiently large to have a rigid assembly, but small enough to move the sliders at low temperatures, where the range of the shear stacks is significantly reduced. With this concentric design, dimensional changes in the height of the shear

• , however, are complex, and their fabrication and assembly typically require considerable efforts. For this reason, all our sample/cantilever holders use the same four laser-cut metal parts as base plates (m1–m4) connected via a simple ceramic center piece (Figure 7f), on top of which different assemblies

Biomimetic chitosan with biocomposite nanomaterials for bone tissue repair and regeneration

• Se-Kwon Kim,
• Sesha Subramanian Murugan,
• Pandurang Appana Dalavi,
• Sebanti Gupta,
• Sukumaran Anil,
• Gi Hun Seong and
• Jayachandran Venkatesan

Beilstein J. Nanotechnol. 2022, 13, 1051–1067, doi:10.3762/bjnano.13.92

• composite using a self-assembly method. The osteoblasts obtained from newborn rat calvaria bones were subjected to biological tests. Cells were viable and proliferating with the produced composite material. In addition, there was an increase in alkaline phosphatase activity. Aside from that, exceptional

• . Through cell viability, porosity measurements, in vitro degradation, and degradation tests, researchers determined that the composites showed increased biocompatibility and promoted cell proliferation and growth, in addition to having a steady degradation rate [61]. In addition, a layer-by-layer assembly

Spindle-like MIL101(Fe) decorated with Bi₂O₃ nanoparticles for enhanced degradation of chlortetracycline under visible-light irradiation

• Chen-chen Hao,
• Fang-yan Chen,
• Kun Bian,
• Yu-bin Tang and
• Wei-long Shi

Beilstein J. Nanotechnol. 2022, 13, 1038–1050, doi:10.3762/bjnano.13.91

• efficient photocatalysts for CTC degradation. Metal–organic frameworks (MOFs) are a kind of micro- or mesoporous materials established by the self-assembly of organic linkers and metal-cluster or metal-ion nodes [19]. The MOF materials possess large surface areas, high pore volume, tunability, uniform

• photocatalyst under UV light irradiation [30]. So far, a large number of MOFs have been shown to exhibit photocatalytic activity in H2 production, organic pollutant degradation, and Cr(VI) and CO2 reduction [26][27][31][32][33]. Among MOF catalysts, MIL101(Fe) is a cage-like structure formed by self-assembly of

Electrocatalytic oxygen reduction activity of AgCoCu oxides on reduced graphene oxide in alkaline media

• Iyyappan Madakannu,
• Indrajit Patil,
• Bhalchandra Kakade and
• Kasibhatta Kumara Ramanatha Datta

Beilstein J. Nanotechnol. 2022, 13, 1020–1029, doi:10.3762/bjnano.13.89

• atomic-level manipulation using established materials chemistry concepts towards the assembly of functional nanoarchitectonics [25][26][27]. The assembly of nanoscale objects through combination and in situ growth routes, leading to high-performance nanoarchitectonics, is an interesting strategy. An

• interesting choice could be the support/assembly of trimetallic AgCuCo particles via in situ formation integrated with conductive (graphitic) supports to further enhance the electrocatalytic properties regarding the ORR in alkaline medium. We designed trimetallic AgCuCo oxide NPs supported on rGO using a

• nanostructures. Also, upon increasing the Ag fraction in the sample, the dispersion of the trimetallic assembly considerably increases, which is clearly reflected in Figure S3c–e, Supporting Information File 1. The importance of the rGO support is further evident from the imaging of supportless the ACC-2* sample

Design of a biomimetic, small-scale artificial leaf surface for the study of environmental interactions

• Miriam Anna Huth,
• Axel Huth,
• Lukas Schreiber and
• Kerstin Koch

Beilstein J. Nanotechnol. 2022, 13, 944–957, doi:10.3762/bjnano.13.83

• composition play significant roles. Here, the ability of self-assembly of wax after isolation from the leaves was used to develop a small-scale wax-coated artificial leaf surface with the chemical composition and wettability of wheat (Triticum aestivum) leaves. By thermal evaporation of extracted plant waxes

• extracted plant waxes has shown that the diverse microstructures of epicuticular waxes arise by self-assembly and that the micromorphology of wax structures is largely determined by their chemical composition [15][17][18][19][20][21][22][23]. Platelets, which mostly have a high primary alcohol content, are

Bioselectivity of silk protein-based materials and their bio-inspired applications

• Hendrik Bargel,
• Vanessa T. Trossmann,
• Christoph Sommer and
• Thomas Scheibel

Beilstein J. Nanotechnol. 2022, 13, 902–921, doi:10.3762/bjnano.13.81

• species [119]. These globular domains fulfill important control functions concerning protein solubility in the gland reservoir and in the assembly of spidroins into silk threads. The various spidroins of spiders differ in their amino acid sequences to yield the specific properties and functions of the

• coatings, recombinant spider silk proteins based on eADF4 can be processed into 3D scaffolds, such as foams or hydrogels due to their self-assembly properties [169][171][172][173][174]. Balb 3T3 fibroblasts adhered to porous foams made of eADF4(C16)-RGD and showed spreading and cell elongation along the