Self-assembly of amino acids toward functional biomaterials

• Huan Ren,
• Lifang Wu,
• Lina Tan,
• Yanni Bao,
• Yuchen Ma,
• Yong Jin and
• Qianli Zou

Beilstein J. Nanotechnol. 2021, 12, 1140–1150, doi:10.3762/bjnano.12.85

• acid self-assembly. This article reviews the recent advances in amino acid self-assembly regarding amino acid self-assembly, functional amino acid self-assembly, amino acid coordination self-assembly, and amino acid regulatory functional molecule self-assembly. Keywords: amino acids; functional

• advances in the field of amino acid self-assembly. In this review, we highlight the latest advances in amino acid self-assembly. These self-assembly methods mainly focus on single amino acid self-assembly, modified amino acid self-assembly, amino acid and metal ion coordination self-assembly, and amino

• were used for the selective sensing of Fe3+ within cancer cells and imaging of Fe3+ [54]. Amino-acid-coordinated self-assembly. Coordination-driven self-assembly is a supramolecular self-assembly method based on metal-coordination bond formation, which has the advantages of fewer steps, fast final

The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles

• Nabojit Das,
• Akash Kumar and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2021, 12, 924–938, doi:10.3762/bjnano.12.69

• nanocrystals with high-index {771} facets. The nanoparticles with high-index planes exhibited higher catalytic activity due to high density of atoms with low coordination number compared to nanoparticles with low-index facets such as {100}, {111}, or {110}. Chirea et al. synthesized polycrystalline gold

• nanowires through a NaBH4-assisted rapid reduction of HAuCl4 in a DES (mixture of reline and ethaline) [94]. The strong coordination of [AuCl4]− in reline exhibited a sixfold enhanced catalytic activity. Apart from the high catalytic activity, nanoparticles produced in DESs showed no cytotoxicity in vitro

Prediction of Co and Ru nanocluster morphology on 2D MoS₂ from interaction energies

• Cara-Lena Nies and
• Michael Nolan

Beilstein J. Nanotechnol. 2021, 12, 704–724, doi:10.3762/bjnano.12.56

• are oxidised. Adatoms that are only bound to other Co atoms remain metallic. Overall oxidation of Co atoms varies with atom coordination. For Ru we find that atoms are partially oxidised when adsorbing to the MoS2 ML, with a computed Bader charge in the range of 7.6 to 7.8 electrons, compared to

Fate and transformation of silver nanoparticles in different biological conditions

• Barbara Pem,
• Marija Ćurlin,
• Darija Domazet Jurašin,
• Valerije Vrček,
• Rinea Barbir,
• Vedran Micek,
• Raluca M. Fratila,
• Jesus M. de la Fuente and
• Ivana Vinković Vrček

Beilstein J. Nanotechnol. 2021, 12, 665–679, doi:10.3762/bjnano.12.53

• complexing agents [44][45]. Henglein et al. [46] suggested the mechanism of coordination of Ag+ on the nanoscale surface by halide ions in media where halide ions are present at a high concentration. Formed AgCl2− complex ions then undergo recrystallization into large objects similar to those observed in PBS

Surface-enhanced Raman scattering of water in aqueous dispersions of silver nanoparticles

• Paulina Filipczak,
• Krzysztof Hałagan,
• Jacek Ulański and
• Marcin Kozanecki

Beilstein J. Nanotechnol. 2021, 12, 497–506, doi:10.3762/bjnano.12.40

• the OH stretching vibration region can give an idea of the dynamic supramolecular structure of water. There are many models of water structure in the liquid phase. These are generally grouped into two types: models with a continuum of geometric and energetic states (assuming tetrahedral coordination

Colloidal particle aggregation: mechanism of assembly studied via constructal theory modeling

• Scott C. Bukosky,
• Sukrith Dev,
• Monica S. Allen and
• Jeffery W. Allen

Beilstein J. Nanotechnol. 2021, 12, 413–423, doi:10.3762/bjnano.12.33

• increase in the coordination number. We should note that the results presented here assume the self-assembly of monodisperse spherical particles suspended in a monovalent salt solution arranged in a uniform starting configuration. Given the Brownian nature of colloidal particles, future simulations should

Gold(I) N-heterocyclic carbene precursors for focused electron beam-induced deposition

• Cristiano Glessi,
• Aya Mahgoub,
• Cornelis W. Hagen and
• Mats Tilset

Beilstein J. Nanotechnol. 2021, 12, 257–269, doi:10.3762/bjnano.12.21

• under electron irradiation. However, this trend is not extended to the recently reported silver carboxylates [39][40]. In gold(I) complexes, only two ligands are present in the coordination sphere, a neutral ligand L and an anionic ligand X. Both ligands influence the complex stability, with an

TiO_x/Pt₃Ti(111) surface-directed formation of electronically responsive supramolecular assemblies of tungsten oxide clusters

• Marco Moors,
• Yun An,
• Agnieszka Kuc and
• Kirill Yu. Monakhov

Beilstein J. Nanotechnol. 2021, 12, 203–212, doi:10.3762/bjnano.12.16

• atoms per each WVI center. As a result, tungsten ions are in tetrahedral coordination environments. W3O9 shows a large energy gap of 3.4 eV which nearly reaches the value of bulk WO3 exhibiting a direct band gap of 3.5 eV [12]. Overall, W3O9 can be seen as the smallest molecular model for bulk WO3

• (111) surface. For this work, only two thermodynamically stable oxide phases were utilized: (i) the z’-TiOx phase with a rectangular unit cell, which is characterized by a typical stripe pattern originated from titanium atoms with different oxygen coordination, and (ii) the w’-TiOx phase with a wagon

Toward graphene textiles in wearable eye tracking systems for human–machine interaction

• Ata Jedari Golparvar and
• Murat Kaya Yapici

Beilstein J. Nanotechnol. 2021, 12, 180–189, doi:10.3762/bjnano.12.14

• people with locked-in syndromes who have extremely limited peripheral mobility but still retain their eye motor coordination [10]. Similarly, basic deliberate eye movements such as saccades (i.e., fast eye movements), fixations (i.e., the duration between two saccades when the gaze is fixated at a point

The role of gold atom concentration in the formation of Cu–Au nanoparticles from the gas phase

• Yuri Ya. Gafner,
• Svetlana L. Gafner,
• Darya A. Ryzkova and
• Andrey V. Nomoev

Beilstein J. Nanotechnol. 2021, 12, 72–81, doi:10.3762/bjnano.12.6

• interaction radius of up to (and including) the fifth coordination sphere. Based on this model, we focused on determining the influence of several initial conditions on the initial stage of the synthesis by condensation of binary Cu–Au nanoparticles. In particular, we focused on the growth processes of these

• heating of Cu3Au nanoclusters, typical changes called “order–disorder transition” occur in the nanocluster structure, leading to the decomposition of the initial L12 crystal structure. This leads to a transition to the FCC structure with a random atomic distribution in the long-range coordination spheres

• addition, the displacement of gold atoms to the cluster surface also plays a role [9]. A cluster begins to form with a copper core and a gold shell (core–shell clusters). The surface atoms already have a lower binding energy due to a decrease in their coordination number, and surface gold atoms have an

Free and partially encapsulated manganese ferrite nanoparticles in multiwall carbon nanotubes

• Saja Al-Khabouri,
• Salim Al-Harthi,
• Toru Maekawa,
• Mohamed E. Elzain,
• Ashraf Al-Hinai,
• Ahmed D. Al-Rawas,
• Abbsher M. Gismelseed,
• Ali A. Yousif and
• Myo Tay Zar Myint

Beilstein J. Nanotechnol. 2020, 11, 1891–1904, doi:10.3762/bjnano.11.170

• semiconducting structures [31][32]. The valence edge of the CNTs correspond to the work function [33]. The well-known features of three-fold coordination of C atoms are the deep-lying σ band, corresponding to a strong in-plane bonding located at 8.1 eV, and delocalized π bands, representing the weak bonding

Molecular dynamics modeling of the influence forming process parameters on the structure and morphology of a superconducting spin valve

• Alexander Vakhrushev,
• Aleksey Fedotov,
• Vladimir Boian,
• Roman Morari and
• Anatolie Sidorenko

Beilstein J. Nanotechnol. 2020, 11, 1776–1788, doi:10.3762/bjnano.11.160

• structures, but also construct spatial profiles and distributions by the target parameter, e.g. height or coordination number. Results and Discussion A series of numerical experiments on modeling the multilayer hybrid structure formation processes based on cobalt and niobium were performed. The variable

• different spatial orientations. The blurring of the contact area between the layers and a less even surface profile compared to niobium are noticeable. A quantitative characteristic of the material spatial structure can be obtained by calculating the coordination number. The coordination number in

• crystallography reflects the number of nearby equally distant atoms of the same type in the crystal lattice. The number of nearest neighbors determines the material packing density. For different types of crystal lattices, the coordination number will be different. The cubic volume-centered lattice

Absorption and photoconductivity spectra of amorphous multilayer structures

• Oxana Iaseniuc and
• Mihail Iovu

Beilstein J. Nanotechnol. 2020, 11, 1757–1763, doi:10.3762/bjnano.11.158

• ]. The physical properties of covalently bonded glasses are determined by the mean coordination number Z (average number of covalent bonds per atom) [4]. It is well known that the functionality of many photonic and optoelectronic devices is based on the intrinsic photoelectric effect. The photocurrent

Adsorption and self-assembly of porphyrins on ultrathin CoO films on Ir(100)

• Feifei Xiang,
• Tobias Schmitt,
• Marco Raschmann and
• M. Alexander Schneider

Beilstein J. Nanotechnol. 2020, 11, 1516–1524, doi:10.3762/bjnano.11.134

• be detected (Figure 3b). This latter observation remains true for larger coverages at which the size of such agglomerates is increased. The situation for 2 is comparable to adsorption properties observed on Cu(111) when metal-organic coordination is not activated [10]. However, different to Cu(111

Self-assembly and spectroscopic fingerprints of photoactive pyrenyl tectons on hBN/Cu(111)

• Domenik M. Zimmermann,
• Knud Seufert,
• Luka Ðorđević,
• Tobias Hoh,
• Sushobhan Joshi,
• Tomas Marangoni,
• Davide Bonifazi and
• Willi Auwärter

Beilstein J. Nanotechnol. 2020, 11, 1470–1483, doi:10.3762/bjnano.11.130

• ][33], decouple perylenetetracarboxylic dianhydride (PTCDA) aggregates [34], study interfacial charge transfer in binary phthalocyanine arrays [35], probe vibronic conductance in oligophenylenes [36], and control the charge state of F16CoPc [37]. Studies focusing on the preparation of coordination

Structural and electronic properties of SnO₂ doped with non-metal elements

• Jianyuan Yu,
• Yingeng Wang,
• Yan Huang,
• Xiuwen Wang,
• Jing Guo,
• Jingkai Yang and
• Hongli Zhao

Beilstein J. Nanotechnol. 2020, 11, 1321–1328, doi:10.3762/bjnano.11.116

• structure with space group P42/mnm. There are six O2− ions as nearest neighbors of each Sn4+ site, and three Sn4+ ions as nearest neighbors of each O2− ion. Hence, the coordination numbers for Sn and O are six and three, respectively. The CASTEP package was used to construct a 3 × 2 × 1 SnO2 supercell. To

Role of redox-active axial ligands of metal porphyrins adsorbed at solid–liquid interfaces in a liquid-STM setup

• Thomas Habets,
• Sylvia Speller and
• Johannes A. A. W. Elemans

Beilstein J. Nanotechnol. 2020, 11, 1264–1271, doi:10.3762/bjnano.11.110

• manganese center of the porphyrin moiety serves as a coordination site for an oxygen atom, which subsequently is inserted into the double bond of the alkene. A variety of oxygen donors can be used to oxidize the manganese center to an active manganese-oxo (Mn=O) species, such as iodosylbenzene, hypochlorite

• no direct metal atom coordination from the substrate is possible. To our surprise we found a strong influence of the solvent on the success of imaging the molecules with STM. When n-tetradecane was used as the solvent, monolayers of MnTUPCl readily formed on Au(111) (Figure 1c), while poorly

• forward two possible explanations for the reduction of the manganese centers of the molecules of MnTUPCl at the Au(111)–n-tetradecane interface in a liquid-STM, i.e., the coordination of a gold atom from the top-most gold layer to MnTUPCl in an axial ligand-like fashion, or an active reduction as the

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

• Mykola Borzenkov,
• Piersandro Pallavicini,
• Angelo Taglietti,
• Laura D’Alfonso,
• Maddalena Collini and
• Giuseppe Chirico

Beilstein J. Nanotechnol. 2020, 11, 1134–1146, doi:10.3762/bjnano.11.98

• materials, nanoscale metal chalcogenides (Cu2−xE, E = S, Se, Te), transition metal dichalcogenide nanostructures (e.g., WS2, MoS2), metal-oxide nanoparticles (e.g., WO3), and nanoscale coordination compounds (e.g., Prussian blue nanoparticles) [33][36][37][38]. The photothermal properties of these

Straightforward synthesis of gold nanoparticles by adding water to an engineered small dendrimer

• Sébastien Gottis,
• Régis Laurent,
• Vincent Collière and
• Anne-Marie Caminade

Beilstein J. Nanotechnol. 2020, 11, 1110–1118, doi:10.3762/bjnano.11.95

• Sebastien Gottis Regis Laurent Vincent Colliere Anne-Marie Caminade Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France Laboratoire de Réactivité et Chimie des Solides, UMR CNRS/UPJV

Nickel nanoparticles supported on a covalent triazine framework as electrocatalyst for oxygen evolution reaction and oxygen reduction reactions

• Secil Öztürk,
• Yu-Xuan Xiao,
• Dennis Dietrich,
• Beatriz Giesen,
• Juri Barthel,
• Jie Ying,
• Xiao-Yu Yang and
• Christoph Janiak

Beilstein J. Nanotechnol. 2020, 11, 770–781, doi:10.3762/bjnano.11.62

• ]. CTFs can be synthesized through different methods and under different reaction conditions, which enables the control over porosity and surface area [29][30][31][32]. The nitrogen moieties within the CTFs can provide coordination anchors or support for metal species [33][34]. They allow for the

• with lone electron pairs, which enable a coordination of nickel, a high chemical and thermal stability arising from the covalently bonded framework as well as high surface area and large pore volume, which allow for a facile molecular transport of reactants and products. We report a route to Ni

Silver-decorated gel-shell nanobeads: physicochemical characterization and evaluation of antibacterial properties

• Marta Bartel,
• Katarzyna Markowska,
• Marcin Strawski,
• Krystyna Wolska and
• Maciej Mazur

Beilstein J. Nanotechnol. 2020, 11, 620–630, doi:10.3762/bjnano.11.49

• than that with sulfonic groups. Thus, the coordination of silver nanoparticles is preferred in terms of thiol rather than sulfonic groups. If the above scenario is correct, one can deduce that, due to the conversion of ca. 55% of the sulfonic groups, the charge accumulated on the particles (due to

Interfacial charge transfer processes in 2D and 3D semiconducting hybrid perovskites: azobenzene as photoswitchable ligand

• Nicole Fillafer,
• Tobias Seewald,
• Lukas Schmidt-Mende and
• Sebastian Polarz

Beilstein J. Nanotechnol. 2020, 11, 466–479, doi:10.3762/bjnano.11.38

• [45]. It is well known, that vibrations of surface-bound amines are quenched through coordination. Signals at 832, 765, 727 and 685 cm−1 can be assigned to the aromatic vibrations of the phenyl rings of azobenzene. These significant vibrations can as well be found in 3D-AzoC2 (blue), which indicates a

• successful functionalization. The UV–vis absorption spectra, shown in Figure 4F, confirm these findings. 3D-AzoC2 shows absorption maxima at 518 and 324 nm. The absorption at 518 nm is assigned to the excitonic bandgap of the perovskite. The absorption at 324 nm indicates the coordination of the azobenzene

• , Figures S10–S12), the photoswitching reaction is strongly facilitated. The improvement can be observed for all ligands (Table 4). It can be concluded that the photoswitching from trans- to cis-isomer is enhanced through the coordination of the azobenzene to the semiconductor. Photoswitching as a

Nanoparticles based on the zwitterionic pillar[5]arene and Ag⁺: synthesis, self-assembly and cytotoxicity in the human lung cancer cell line A549

• Dmitriy N. Shurpik,
• Denis A. Sevastyanov,
• Pavel V. Zelenikhin,
• Pavel L. Padnya,
• Vladimir G. Evtugyn,
• Yuriy N. Osin and
• Ivan I. Stoikov

Beilstein J. Nanotechnol. 2020, 11, 421–431, doi:10.3762/bjnano.11.33

• presence of a preorganized macrocyclic structure makes the process of controlled supramolecular self-assembly possible with certain coordination sites. In this paper, we report the first example of using nontoxic, water-soluble pillar[5]arene derivatives containing sulfobetaine fragments to produce

DFT calculations of the structure and stability of copper clusters on MoS₂

• Cara-Lena Nies and
• Michael Nolan

Beilstein J. Nanotechnol. 2020, 11, 391–406, doi:10.3762/bjnano.11.30

• determined for the Cu atoms on the defective monolayer are shown in Table 8. The computed Bader charge at the Cu atom at site 1 indicates little oxidation of the Cu atom. This arises due to coordination of Cu to three Mo atoms so that oxidation of the Cu is not favourable. The other binding sites have

High-performance asymmetric supercapacitor made of NiMoO₄ nanorods@Co₃O₄ on a cellulose-based carbon aerogel

• Meixia Wang,
• Jing Zhang,
• Xibin Yi,
• Benxue Liu,
• Xinfu Zhao and
• Xiaochan Liu

Beilstein J. Nanotechnol. 2020, 11, 240–251, doi:10.3762/bjnano.11.18

• corresponding to the Mo 3d5/2 and Mo 3d3/2 levels of Mo6+, respectively [39]. Figure 4f shows the core-level spectrum of O 1s. It can be divided into two main peaks at 530.4 and 531.2 eV, which are attributed to typical metal–oxygen bonds and oxygen ions of low coordination numbers at the surface, respectively