Materials Literature
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The nuclear and magnetic structures of the cubic antiperovskite compound Mn3NiN are studied using neutron powder diffraction as a function of temperature and applied magnetic field. On cooling in zero field from the paramagnetic state, an anomalous lattice expansion abruptly occurs as the long range antiferromagnetic…
A series of new poly(imino ether)s (PIEs) have been synthesized via palladium-catalyzed polycondensation of 4,4′-dibromodiphenyl ether with various aromatic diamines. All PIEs were fully characterized by Fourier transform infrared spectroscopy, elemental analyses, differential scanning calorimetry, thermogravimetric a…
The inclusion of a transition metal ( M ) into an icosahedral Au 12 cage ([ M @Au 12 ] q ), was theoretically predicted prior to its experimental characterization on the basis of the jellium model, where the titled system is in accordance with the 18- ve principle fulfilling a 1s 2 1p 6 1d 10 electronic configuration.…
Using reactive singlet oxygen (1O2), the oxidation of chemical-warfare agent (CWA) simulants has been demonstrated. The zinc octaphenoxyphthalocyanine (ZnOPPc) complex was demonstrated to be an efficient photosensitizer for converting molecular oxygen (O2) to 1O2 using broad-spectrum light (450-800 nm) from a 250 W ha…
Abstract Laser-induced optical breakdown at two spatial locations in ultrapure water saturated with ambient gas is used to nucleate microscopic bubble clouds with lifetimes of tens of nanoseconds. The liquid is ruptured via the interaction of a pair of laser-induced shocks and bubbles. We find that the acoustically nu…
Polyglutamic acid at low pH forms aggregates and self-assembles into a spiral, fibril-like superstructure formed as a β2-type sheet conformation that has a more compact intersheet packing than commonly found. This is stabilized by three-centered bifurcated hydrogen bonding of the amide carbonyl involving the protonate…
It was recognized a long time ago that new material functionalities emerge from the assembly of nanoscale objects. Indeed, optical or mechanical properties are largely determined at this length scale. The last decades have brought many new approaches to manipulate objects at this fine, earlier unapproachable, size. Th…
We report a detailed investigation of vibrational modes, structure, and dynamics of elemental sulfur in the glassy and the supercooled state, using Raman scattering and ab initio calculations. Polarized Raman spectra are recorded--for sulfur quenched from 473 K--over a broad temperature range from 93 K to 273 K where…
Geschüttelt, nicht gerührt: Kohlenmonoxid wurde in einer Kugelmühle kontinuierlich oxidiert. Beim Mahlen wird die Reaktionsgeschwindigkeit deutlich erhöht, diese sinkt jedoch schnell gegen null, wenn der Mahlvorgang gestoppt wird. Die Reaktionsgeschwindigkeit der Cr2O3-katalysierten Reaktion in der Kugelmühle ist bei…
The Zintl-phase Sr3 AlSb3 , which contains relatively earth-abundant and nontoxic elements, has many of the features that are necessary for good thermoelectric performance. The structure of Sr3 AlSb3 is characterized by isolated anionic units formed from pairs of edge-sharing tetrahedra. Its structure is distinct from…
We report the influence of La substitution in epitaxial BiFeO3 thin films prepared by pulsed layer deposition on a Nb-doped SrTiO3 substrate, focusing on ferroelectric domain structure, leakage current, and multiferroic properties. Enhanced ferroelectric remanent polarization and reduced leakage current density were e…
We present spectral and angular transmission filters based on the guided-mode resonance (GMR) effect cooperating with the Rayleigh anomaly in a subwavelength nanograting. We theoretically and experimentally show that the onset of higher diffraction orders at the Rayleigh anomaly dramatically sharpens a GMR transmissio…
Die Durchdringungskraft hochenergetischer Röntgenstrahlen macht es möglich, den Verlauf von Reaktionen fester organischer Pharmazeutika in einer Kugelmühle in situ und in Echtzeit zu verfolgen, indem kristalline Phasen detektiert und auf die Entwicklung ihrer Partikelgrößen hin ausgewertet werden. Wird beim Mahlen ein…
Novel nitrogen‐doped graphene nanoribbons (GNR‐Ns) are synthesized by the coupling reaction between a pyrazine (or benzene) derivative and naphthalene followed by cyclodehydrogenation. The amount of nitrogen doping in the GNR‐Ns is controlled by changing the monomer feed ratio of pyrazine to benzene for polymerization…
Molecular dynamics simulations are performed to determine the solubility and diffusion coefficient of carbon dioxide and nitrogen in poly(methyl methacrylate) (PMMA). The solubilities of CO2 in the polymer are calculated employing our grand canonical ensemble simulation method, fixing the target excess chemical potent…
Sodium humate (SH), a cost-effective and environmentally friendly humic substance, was employed to noncovalently functionalize graphene. The functionalized graphene (SHG) could stably and individually be dispersed in water at very high concentration (up to 30 mg/mL). The stabilization mechanism of SHG colloid was reve…
A single‐step processing system in which an extruder and a peristaltic injector pump attached in tandem was developed for continuous and accurate incorporation of epoxidized soybean oil (ESO) into a poly (lactic acid) (PLA) matrix in order to enhance the flexibility and toughness of PLA sheet and film. The impact stre…
A correspondence is established between the electric dipole matrix elements of a polyatomic symmetric top molecule in a state with nonzero projection of the total angular momentum on the symmetry axis of the molecule and the magnetic dipole matrix elements of a magnetic dipole associated with an elemental spin F. It i…
X-ray pair distribution function (pdf) and U L${}_{3}$ extended x-ray absorption fine structure (EXAFS) and neutron pdf measurements that give identical results for UO${}_{2}$ show U(VI)-oxo moieties with x rays for mixed valence U${}_{4}$O${}_{9}$ and U${}_{3}$O${}_{7}$, in contrast to the neutron data that indicate…
Therapeutic advances do not circumvent the devastating fact that the survival rate in glioblastoma multiforme (GBM) is less than 5%. Nanoparticles consisting of liposome-based therapeutics are provided against a variety of cancer types including GBM, but available liposomal formulations are provided without targeting…