Materials Literature
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Bimetallic heterostructures are used as industrial catalysts for many important transformations. However, conventional catalysts are primarily prepared in cost-effective manners without much appreciation in metal size control and metal-metal interaction. By employing recent nanotechnology, Pt nanocrystals with tailore…
A series of dinucleating bis (β-diketiminate) ligands with rigid bridges has been prepared. In all cases the β-diketiminate unit is 2,6- i Pr 2 C 6 H 3 NC(Me)C(H)C(Me)N-(bridge), and the bridges are either para -phenylene, meta -phenylene or 2, 6-pyridylene (the dinucleating ligands are abbreviated as PARA-H 2, META-H…
We report the synthesis, structural identification, and electrical properties of the first one-dimensional (1-D) nanomaterials of a semiconducting higher manganese silicide (MnSi(2-x)) with widths down to 10 nm via chemical vapor deposition of the single-source precursor Mn(CO)(5)SiCl(3). The complex Nowotny chimney l…
This study focuses on the effect of various parameters of the synthesis procedure of the CO 2 sorbent—CaO−Ca 12 Al 14 O 33 derived from calcium acetate—on the CO 2 sorption ability and lifetime. The synthesis procedure consists of the calcination of the acetate CaO precursor (step 1), the precipitation of the CaO with…
A new calix[4]pyrrole-based, dual functional, chemodosimetric sensor was developed and studied as a cyanide selective indicator; complete color bleaching was observed even in the co-presence of an excess of other anions.
First-principles modeling combined with experimental methods were used to study hydroxyapatite in which Sr2+ is substituted for Ca2+. Detailed analyses of cation-oxygen bond distributions, cation-cation distances, and site 1-oxygen polyhedron twist angles were made in order to provide an atomic-scale interpretation of…
Abstract The function of organic solar cells is based upon charge photogeneration at donor/acceptor heterojunctions. In this paper, the origin of the improvement in short circuit current of poly(3‐hexylthiophene)/6,6‐phenyl C61‐butyric acid methyl ester (P3HT/PCBM) solar cells with thermal annealing is examined. Trans…
Density functional theory incorporating hybrid exchange-correlation functionals has been extraordinarily successful in providing accurate, computationally tractable treatments of molecular properties. However, conventional hybrid functionals can be problematic for solids. Their nonlocal, Hartree-Fock-like exchange ter…
X-ray based computed tomography (CT) is among the most convenient imaging/diagnostic tools in hospitals today in terms of availability, efficiency, and cost. However, in contrast to magnetic resonance imaging (MRI) and various nuclear medicine imaging modalities, CT is not considered a molecular imaging modality since…
The study on the mechanism of the shape evolution of nanocrystaline particles is an important and emerging field, which is applicable in the shaped control synthesis of nanoparticles. As an alternative to transmittance electron microscopy (TEM), which is already used in the study of nanoparticles, in this article a si…
A new organic nonlinear optical (NLO) material L-Histidinium trifluoroacetate was crystallized using L-Histidine and trifluoroacetic acid in 1:1 stoichiometric ratio in water-ethanol medium.X-ray diffraction analysis of the single crystals showed that they belong to triclinic system, space group P1, with two molecules…
The Al5O4(-) cluster displays a highly symmetric (D4h) planar ring structure and magic cluster stability. The enhanced stability of this nonstoichiometric cluster is the result of an unconventional electronic distribution within the cluster, which is different from that found in stoichiometric Al2O3. The corresponding…
Abstract This paper reports the anisotropic electrical properties of a layer‐by‐layer (LBL) film composed of water‐soluble conjugated polymers and single‐walled carbon nanotubes (SWNTs). The water‐soluble poly (p‐phenylene ethynylene)s (PPEs) are capable of a strong π‐π interaction with the sidewall of SWNTs and resul…
Selbstzerstörend: Multipodale Goldpartikel entstehen in einer galvanischen Verdrängungsreaktion zwischen AuCl und einem selbstzerstörerischen Templat, das aus einem dreidimensionalen Aggregat magnetischer Eisennanopartikel besteht. Einmalig an diesem System ist, dass das Templat während der Reaktion spontan auseinande…
The present study shows how spectroscopic methods are implemented during the identification of diamonds. Specifically, this article presents the characteristic spectroscopic features and criteria of identification for different types of yellow diamonds, including varieties of naturally occurring yellow color and varie…
We have successfully synthesized bulk nanostructured Fe94.3B5.7 alloy using the one-step approach of a self-propagating high temperature synthesis (SHS) combining a rapid cooling technique. This method is convenient, low in cost, and capable of being scaled up for processing the bulk nanostructured materials. The soli…
Abstract Aniline‐formaldehyde resin modified by adding piperazine (AFP) was prepared in alkaline medium, and its metal polychelates have also been prepared with Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) metal ions. The synthesized compounds were characterized by elemental, spectral (UV–Vis, IR, 1H‐NMR and 13C‐NMR), t…
The Journal of Phycology was founded in 1965 by the Phycological Society of America. All aspects of basic and applied research on algae are included to provide a common medium for the ecologist, physiologist, cell biologist, molecular biologist, morphologist, oceanographer, taxonomist, geneticist, and biochemist. The…
Effects of various rare‐earth (RE) dopants (Y 3+ , La 3+ , Ce 3+ , Pr 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Gd 3+ , Tm 3+ , Dy 3+ , Er 3+ , and Yb 3+ ) on the dielectric, ferroelectric, and pyroelectric properties of Sr 0.5 Ba 0.5 Nb 2 O 6 (SBN50) ceramics were investigated. In the present studies, the doping concentrations of…
The behavior of a linear polymer chain is studied in a solvent with high affinity for the polymer. The coil dimensions and specific heat are calculated as a function of chain length, solvent concentration, and polymer-solvent attraction strength epsilon(ps). All other interactions are limited to excluded volume repuls…