Materials Literature
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We describe the two correlated rotational motions of pyrimidine rings in 4,4'-dimethyl-2,2'-bipyrimidine ligated to Cu(i). The two pyrimidine rings delimited by anthryl and phenanthroline groups rotate to afford three isomers. (1)H NMR measurements revealed that the two rotational processes were activated at different…
Summary The n‐type cadmium sulfide (CdS) is one of the most promising materials for hetero‐junction thin film solar cell applications due to its wide bandgap (2.42 eV). In present communication, the deposition of pure CdS films with hexagonal symmetry by using home‐built spray pyrolysis technique and aqueous solutions…
BiFeO 3 microcylinders were synthesized via a hydrothermal condition. SEM observation reveals that with increasing the hydrothermal reaction time from 6 to 15 h, the microcylinders grow from ~0.7 to ~4.1 μ m in height, whereas their diameter remains to be 3.7‐3.8 μ m with a minor change. The microcylinders are mainly…
We have created a composite material based on polypropylene (PP) with carbon black as the filler. The dependence of the electric resistivity of the composite on the filler mass fraction has been experimentally studied. It is established that this dependence has a threshold character and the material retains dielectric…
Nanometric, luminescent Eu:LuPO <sub>4</sub> particles quickly (30 min) synthesised in the absence of organic additives and able to form stable colloidal suspensions in aqueous media.
The regenerability and stability of lanthanum strontium manganite (LSM)/yttria doped zirconia (YSZ)/LSM symmetrical cells have been examined after the cells were exposed to real-world air environment containing H2O and CO2. An alternate exposure experiment in 20% H2O-air and dry air has been conducted to test the reve…
Graphene based electron field emitter arrays consisting of cone-shaped silicon tips, a thin Al2O3 tunnel barrier, and graphene top electrode are fabricated. Due to the monolayered graphene top electrode, the electrons are able to tunnel through the Al2O3 layer and emit into the vacuum. The temperature behavior of the…
The study of catalysts based on a Ce 0.72 Zr 0.18 Pr 0.1 O 2 solid solution with Pt, Pd, and Ru supported from acetylacetonate precursors showed their high activity in the processes of CO and methane oxidation. Transmission electron microscopy, X-ray absorption spectroscopy, and X-ray photoelectron spectroscopy were u…
The synthesis of germanium nanoparticles has been carried out, thanks to the design of novel aminoiminate germanium(II) precursors: (ATI)GeZ (with Z = OMe, NPh2, and ATI = N,N'-diisopropyl-aminotroponiminate) and (Am)2Ge (Am = N,N'-bis(trimethylsilyl)phenyl amidinate). These complexes were fully characterized by spect…
This paper shows an influence of chemical composition of used electrolyte, such as amount of sulphuric acid in electrolyte, amount of aluminium cations in electrolyte and amount of oxalic acid in electrolyte, and operating parameters of process of anodic oxidation of aluminium such as the temperature of electrolyte, a…
Zeolite L macroinitiators are used for controlled radical copolymerization of a photo-active monomer and subsequent spin trapping of nitroxides results in diversely functionalized particles.
Novel tin(IV) halo complexes of an N-confused tetraphenylporphyrin with different axial ligands have been synthesized and characterized by various spectroscopic methods including X-ray crystallographic analysis. The molecular structures of the dichloro and dibromo derivatives possess perfect octahedral geometries, whi…
Controlling the self-assembly behavior of caged proteins expands their potential applications in nanotechnology. While the structure of a caged E2 protein from pyruvate dehydrogenase is inert to any pH change, the incorporation of switchable GALA peptide that undergoes a coil-to-helix transition at acidic pH modulates…
Implantation of hydrogen ions into synthetic single–crystal diamonds followed by subsequent high–temperature annealing and anodic etching of implanted crystals was used to obtain structurally perfect 30–nm thick diamond membranes with optically active NV− centres (area up to several tens mm²) appropriate for use in in…
Iterative 3,3′-diaminopivalic acid connections act as building blocks in the production of new all-aliphatic polyamide dendrimers. 3,3′-Diazidopivalic acid units underpin a two-step pathway involving carboxylic acid–amine condensation, followed azide reduction.
Aerogels based on vanadium oxide were obtained by supercritical drying in carbon dioxide (scCO 2 ) and organic solvents (acetone, n -hexane, n -heptane, and n -octane). The performed study allowed us to reveal the effect of experimental parameters (precursor type, type of primary and secondary solvents) on the phase c…
The morphological disorder in multilayer graphene behaves like a semiconductor in low temperature.
The chemical bonding theory of single crystal growth was applied to a Gd3Ga5O12 (GGG) Czochralski growth system. On the basis of anisotropic chemical bonding characteristics, the mesoscale process controlled by both thermodynamics and kinetics has been studied in GGG single crystal growth. Starting from the unit-scale…
The transition from nanoparticles suspended in aqueous solutions into solid fluorescent structures is developed for application in solid functional devices. The presented approach enables the organization of carbon dots into rod-like shapes that can still be re-dispersed into aqueous solution. Schiff bases forming at…
CDDP was loaded onto the surface of carboxyl polymer-coated NaYF <sub>4</sub> :Yb <sup>3+</sup> /Tm <sup>3+</sup> nanoparticles prepared by hydrothermal treatment in the form of Pt–O bonds, and delivered through cellular uptake of the NaYF <sub>4</sub> –CDDP composite.