Materials Literature
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Auf Molekülebene wurde der Bildungsmechanismus kolloidaler InP-Quantenpunkte (QDs) mithilfe von NMR-Spektroskopie untersucht. Anders als bei der Bildung von monodispersem PbSe und CdSe werden bei InP-Synthesen üblicherweise die molekularen Phosphorspezies nach der Keimbildung vollständig verbraucht, sodass die QDs aus…
A nice gathering at the interface: The de novo design and characterization of amphiphilic α/β-peptides, which form ordered two-dimensional assemblies at the air–water interface composed of oligomers in pleated conformation similar to β-sheets of α-peptides, is reported. The positioning of ionic side chains along the b…
X-ray nonlinear optics, which has been considered as a scientific frontier to be explored with x-ray free-electron lasers, is accessible with existing synchrotron x-ray sources, revealing its unique features. We demonstrate that x-ray parametric down-conversion is observed indirectly through quantum mechanical interfe…
The adsorption of a small amount of cesium on Ag(110) redirects the partial oxidation products of styrene from phenylacetaldehyde and phenylketene to styrene oxide. The cesium stabilizes the oxametallacycle intermediate and hinders its transformation to the intermediate that leads to the other products. Cesium does no…
Manganese dioxide nanoparticles were prepared by a chemical precipitation method. Composite electrodes for electrochemical supercapacitors (ES) were fabricated by impregnation of slurries of the manganese dioxide nanoparticles and carbon black into porous nickel foam current collectors. In the composite electrodes, ca…
Nineteen neutral nickel bisdiphenylethenedithiolene complexes [Ni(dpedt)2], including seventeen new compounds, were synthesized and characterized by a new short, efficient and multigram-scale synthetic method. Preliminary physical investigations show that these complexes are electron-withdrawing materials exhibiting g…
Abstract Immiscible ternary blends of PET/EVA/PP (PET as the matrix and (PP/EVA) composition ratio = 1/1) were prepared by melt mixing. Scanning electron microscope results showed core‐shell type morphology for this ternary blend. Binary blends of PET/PP and PET/EVA were also prepared as control samples. Two grades of…
IMPORTANCE OF THE FIELD: The presence of the blood-brain barrier (BBB), an insurmountable obstacle, in particular, and other barriers in brain and periphery contribute to hindrance of the successful diagnosis and treatment of a myriad of central nervous system pathologies. This review discusses several strategies adop…
In order to obtain satisfied spherical agglomerated product and overcome the incomplete removal of the impurity during the traditional spherical agglomerated process, a new strategy incorporating the spherical agglomeration technique and the drowning-out crystallization process, by which the impurities can be efficien…
We report the observation of domain structure and piezoelectric properties of pure and Mn-doped (K 0.44 ,Na 0.52 ,Li 0.04 )(Nb 0.84 ,Ta 0.1 ,Sb 0.06 )O 3 (KNN-LT-LS) thin films on SrTiO 3 substrates. It is revealed that, using piezoresponse force microscopy, ferroelectric domain structure in such 500 nm thin films com…
We have synthesized various samples of the $x=2/3$ phase of sodium cobaltate ${\text{Na}}_{x}{\text{CoO}}_{2}$ and performed x-ray powder diffractions spectra to compare the diffraction with the structure proposed previously from NMR and nuclear quadrupole resonance (NQR) experiments [H. Alloul, I. R. Mukhamedshin, T.…
We report a joint experimental and theoretical study of CO chemisorption on the golden cages. We find that the Au(17)(-) cage is highly robust and retains its cage structure in Au(17)(CO)(-). On the other hand, the Au(16)(-) cage is transformed to a structure similar to Au(17)(-) upon the adsorption of CO. Au(18)(-) i…
Abstract Oriented polymer blends whose major component is high‐density polyethylene (HDPE) are strained until failure. Two‐dimensional (2D) small‐angle X‐ray scattering (SAXS) patterns monitor the nanostructure evolution, which is related to the macroscopic mechanical evolution. Data evaluation methods for high‐precis…
In this work, CdSe/CdS semiconductor ligand-exchanged nanoparticles have been immobilized on poly-(N-isopropylacrylamide) (pNIPAM)-based microspheres. The size and the shrinkage capacity of the spheres can be tuned by the ratio of NIPAM/styrene (pNIPAM-PS spheres) or NIPAM/BIS (N-N′-methylene-bis-acrylamide) and MA (m…
Electronic and magnetic properties of the charge ordered phase of ${\text{LuFe}}_{2}{\text{O}}_{4}$ are investigated by means of x-ray spectroscopic and theoretical electronic structure approaches. ${\text{LuFe}}_{2}{\text{O}}_{4}$ is a compound showing fascinating magnetoelectric coupling via charge ordering. Here, w…
With the rapid advances being made in novel high-energy ion-beam techniques such as proton beam writing, single-ion-event effects, ion-beam-radiation therapy, ion-induced fluorescence imaging, proton/ion microscopy, and ion-induced electron imaging, it is becoming increasingly important to understand the spatial energ…
Four coordination polymers of different transition metal ions with azide and the zwitterionic dicarboxylate ligand 1,2-bis(N-carboxymethyl-4-pyridinio)ethane (bcpe) were synthesized, and structurally and magnetically characterized. They are formulated as [M(2)(bcpe)(N(3))(4)].H(2)O (M = Mn, 1; Co, 2; and Ni, 3) and [C…
The superparamagnetic iron oxide nanoparticle (SPIO) 'theranostics', which contain imaging probes for tumor diagnosis and therapeutic compounds for therapy in a single nanoparticle, might provide significant benefits compared with exiting tumor imaging and therapeutic strategies. In this review, we summarize the progr…
We demonstrate a method that by design reproducibly exploits hot spots in metal nanoparticle aggregates for disease-specific enzyme detection using SERS. Crucially, the reporter molecule is placed within a self-assembled bioactive gold nanostructure, at the optimal EM hot spot position, overcoming the main problem of…
In this paper we provide a comprehensive analysis of different properties of pnictides both in the normal and superconducting state, with a particular focus on the optimally doped ${\text{Ba}}_{1\ensuremath{-}x}{\text{K}}_{x}{\text{Fe}}_{2}{\text{As}}_{2}$ system. We show that, by using the band dispersions experiment…