Materials Literature
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A novel hexagonal tungsten oxide (HTO)-like layered framework containing a main-group cation, In(3+), and a lone-pair cation, Te(4+), is reported. Na(1.4)InTe(3.6)O(9.4) exhibits a layered structure consisting of InO6, TeO3, and TeO4 polyhedra. The synthesis, crystal structure determination, characterization, and reac…
A series of arsenotungstates formulated as (H 2 en) 3.5 [HAs 2 W 8 O 31 ]·6H 2 O ( 1 ), Na 0.5 (H 2 en) 6.5 {Ni 3 (en)[B-α-AsW 9 O 34 ][B-β-AsW 8 O 31 ]}Cl 1.5 ·9H 2 O ( 2 ), and [H 2 en] 4 {[Ni 4 (Hen) 2 ][B-α-AsW 9 O 34 ] 2 }·5H 2 O ( 3 ) have been sequentially synthesized by controlling the reaction process. First,…
Abstract New mixed‐valence Cu I –Cu II 1D coordination polymers of the structure [Cu I 2 Cu II X 2 (Pip‐dtc) 2 (CH 3 CN) 2 ] n [Pip‐dtc = piperidine‐1‐carbodithioate; X = Br ( 1a ), I ( 1b )] containing a dithiocarbamate derivative have been synthesized and structurally characterized by X‐ray diffraction. The 1D infin…
The structure of kaolinite at the atomic level, including the effect of stacking faults, is investigated using inelastic neutron scattering (INS) spectroscopy and density functional theory (DFT) calculations. The vibrational dynamics of the standard crystal structure of kaolinite, calculated using DFT (VASP) with norm…
First-principles calculations based on the density functional theory (DFT) within the generalized gradient approximation (GGA) have been used to study Sc -doped TiO 2 , rutile and anatase, crystals. Local defect microstructure, electronic and electrical properties have been obtained and discussed in the present work.…
Background: Despite the wide range of applications, there is a serious lack of information on the impact of the nanoparticles on human health and the environment. The present study was done to determine the range of dangerous concentrations of iron oxide nanoparticle and their effects on mouse embryonic stem cells. Me…
This work aims at studying the effect of the milling conditions on the microstructure and mechanical properties of a ZrB₂-5 vol% Si₃N₄ matrix reinforced with chopped Hi-Nicalon SiC fibers. Several composites were obtained using different milling conditions in terms of time, speed and type of milling media. The composi…
Abstract The crystal structure of syndiotactic polystyrene (sPS) co‐crystals of δ‐class is discussed with the aim of identifying molecular descriptors that allow predicting the lattice distortions induced by the inclusion of guest molecules inside the cavities of the nanoporous δ‐form. Based on the consideration that…
In this work, we studied enzyme-catalyzed oxidation of single-walled carbon nanotubes (SWCNTs) produced by the high-pressure carbon monoxide (HiPco) method. While oxidation via strong acids introduced defect sites on SWCNTs and suppressed their near-infrared (NIR) fluorescence, our results indicated that the fluoresce…
A field-effect transistor has been fabricated utilizing an epitaxial film of unstrained zinc-substituted magnetite (Fe 3 O 4 ) as the active channel. A thin film of Fe 2.5 Zn 0.5 O 4 was grown on a lattice-matched MgO(001) substrate by pulsed-laser deposition and covered by a parylene gate insulator to dope charge car…
Abstract Syndiotactic polystyrene (sPS) forms cocrystals with a variety of chemical compounds. The guest molecules can be easily replaced with other kinds of molecules under certain conditions. The guest‐exchange process, on exposure to liquid triethylene glycol dimethyl ether (TEGDME), is followed by time‐resolved si…
Abstract Perfluoroarylation of a known iron(II) diiodoclathrochelate precursor and its new n ‐butylboron‐capped hexaiodomacrobicyclic analog with pentafluorophenylcopper(I) gave the first iron(II) cage complexes with inherent perfluoroaryl substituent(s). The complexes synthesized were characterized by elemental analy…
A shrinking device is an intriguing illusion device that can convert an arbitrary object virtually into a desired small-size object. By performing linear transformation along the orthogonal direction, two-dimensional and three-dimensional electromagnetic shrinking devices with anisotropic homogeneous material paramete…
Rare-earth aluminate (RAlO3, R = La–Lu and Y) glass and crystalline phases were prepared by containerless levitation in an aerodynamic levitation furnace. In the RAlO3 system, La, Nd and Sm aluminum perovskites solidified as glass and Eu–Lu and Y aluminum perovskites solidified as crystalline phases. The glass forming…
Abstract In this paper, we comprehensively investigate the influences of M (M=Cu, Co, Mn) substitution for Ni on the structures and electrochemical hydrogen storage characteristics of the nanocrystalline and amorphous Mg 20 Ni 10− x M x (M=Cu, Co, Mn; x = 0–4) alloys prepared by melt spinning. The as‐spun (M=None, Cu)…
Isomerization of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:mrow><mml:mi>n</mml:mi></mml:mrow></mml:math>-butane was studied on silica-supported heteropolyacids. The activity depends strongly on the solvent used for the preparation and on the polyoxometalate loading. This behavior was explai…
A facile approach to preparing mesoporous hybrid microcapsules is developed by exploring the segregating and mineralization-inducing capacities of cationic hydrophilic polymer. The preparation process contains four steps: segregation of cationic hydrophilic polymer during template formation, cross-linking of the segre…
ABSTRACT A design of experiments and response surface modeling were performed to investigate the effects of formulation and processing factors on the flexural moduli and strengths of vapor‐grown carbon nanofiber (VGCNF)/vinyl ester (VE) nanocomposites. VGCNF type (pristine, surface‐oxidized), use of a dispersing agent…
We report results of our total energy electronic structure calculation of encapsulation of graphene nanoribbon (GNR) in the carbon nanotube (CNT). The encapsulation of both coronene and perylene based graphene nanoribbons in zigzag (n,0) carbon nanotubes (where n ranges from 14 to 18 for perylene based nanoribbon and…
Nonadiabatic photocyclization is the fundamental step underlying photoswitching and light-assisted bond formation within diarylethylenes, yet the details of the nuclear dynamics leading to cyclization remain unclear. We have examined the ultrafast excited-state dynamics of o-terphenyl (OTP) and 1,2-diphenylcyclohexene…