Materials Literature
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Abstract A new approach to prepare and characterize double network elastomeric systems was investigated. A styrene‐ethylene‐ co ‐butylene‐styrene (SEBS) triblock copolymer system containing physical crosslinks was used to achieve a double network by additional crosslinking using ultra‐violet (UV) light. An ethylene–pr…
Three new gallium diphosphonates: Ga(3)(OH)(O(3)PC(3)H(6)PO(3))(2) (1), Ga(4)(O(3)PC(5)H(10)PO(3))(3)(C(5)H(5)N)(2) (2), and Ga(HO(3)PC(10)H(20)PO(3)) (3), in which the diphosphonate bridging ligands have 3, 5, and 10 methylene units, respectively, have been synthesized using solvothermal methods and their structures…
The racemate and enantiomer of sertraline free base were prepared and characterized. The crystalline sertraline enantiomer is relatively less polymorphic compared with the sertraline-HCl salt. The solid-state nature of sertraline racemate was identified to be a racemic compound through a binary melting point phase dia…
Air-stable four-coordinate As(III) complexes, [As(L4)Cl] (1) and [As(L4)I] (2), were prepared using a rearranged form of the deprotonated benzothiazoline ligand, 2-(pyridin-2-yl)-2,3-dihydrobenzo[d]thiazole. Complexes 1 and 2 have been characterized by FTIR, (1)H NMR, UV-vis, and elemental microanalysis. The solid-sta…
We report negative and positive refraction in a prism made of stacked perforated thin surfaces for s and p polarization, respectively. By corrugating the subwavelength slits of a free-standing periodic arrangement, geometrically induced surface-plasmon-like currents are excited and transmission is allowed under s pola…
Abstract In this paper, a facile route was designed to prepare a new AB 2 ‐type polymer P1 via simple Sonogashira coupling reaction, also its corresponding linear analog ( P2 ) was obtained from AB monomer for comparison. Despite the relatively lower loading density of the effective chromophore moieties, P1 demonstrat…
We present the pressure-dependent infrared absorbance spectra of unoriented single-walled carbon nanotube films for pressures up to 8 GPa. Various pressure transmitting media (helium, argon, CsI, and alcohol mixture) were employed to verify the influence of the pressure medium on the observed pressure effects. For all…
Abstract Linear viscoelastic properties of polymer melts are highly sensitive to any structural changes, including molecular weight changes and the formation and growth of crystallites. Here, we make use of this sensitivity to study the homogeneous crystallization of polylactide. As this polymer is rather quickly susc…
The employment of H 2 in fuel cell (FCs) technologies could ensure significant advantages in terms of efficiency and environmental impact, representing thus an important alternative to the conventional energy production systems. As far as the actual lack of infrastructure for H 2 production, storage, and distribution…
Novel organic-inorganic mesoporous luminescent hybrid material N, N'-bis(salicylidene)-thiocarbohydrazide (BSTC-SBA-15) has been obtained by co-condensation of tetraethyl orthosilicate and the organosilane in the presence of Pluronic P123 surfactant as a template. N,N'-bis(salicylidene)-thiocarbohydrazide (BSTC) graft…
Abstract Homopolymer bearing cyclic carbonate (CC) group, ABA type triblock copolymers, and (AC)B(AC) type terpolymers with statistical arrangement of A and C monomers bearing side chain CC groups are reported here. Difunctional poly(ethylene glycol) macroinitiators (PEGMIs) were prepared from PEG of three different m…
High Resolution Image Download MS PowerPoint Slide We report epitaxial growth and structures of SrFeO 2.5 (SFO) films on SrTiO 3 (STO) (001) and (111) substrates by pulsed-laser deposition. Reflection high-energy electron diffraction intensity oscillations were observed during the initial growth on both substrates, re…
Garutiite (Ni,Fe,Ir) is a new hexagonal polymorph of native Ni discovered in chromitite from Loma Peguera, Dominican Republic. The mineral was identified in heavy mineral concentrates obtained through the use of electric pulse disaggregation (EPD) and hydroseparation (HS) techniques. It forms as anhedral, botryoidal g…
We report high-resolution, bulk Compton scattering measurements unveiling the Fermi surface of an optimally doped iron-arsenide superconductor, $\text{Ba}{({\text{Fe}}_{0.93}{\text{Co}}_{0.07})}_{2}{\text{As}}_{2}$. Our measurements are in agreement with first-principles calculations of the electronic structure, revea…
Four different poly( tert -butoxystyrene)- b -polystyrene- b -poly(4-vinylpyridine) (P t BOS- b -PS- b -P4VP) linear triblock copolymers, with the P4VP weight fraction varying from 0.08 to 0.39, were synthesized via sequential anionic polymerization. The values of the unknown interaction parameters between styrene and…
Electron-energy-loss spectroscopy (EELS) is used to investigate single layers of ${\text{LaAlO}}_{3}$ grown on ${\text{SrTiO}}_{3}$ having an $n$-type interface as well as multilayers of ${\text{LaAlO}}_{3}$ and ${\text{SrTiO}}_{3}$ in which both $n$- and $p$-type interfaces occur. Only minor changes in Ti valence at…
Biofunctional micelles formed via self-assembly of synthetic peptide-lipid conjugates are a class of promising biomaterials with applications in drug delivery and tissue engineering. The micelle building block, termed peptide amphiphile, consists of a lipid-like chain covalently linked through a spacer to a peptide he…
Abstract By impedance spectroscopy, Gonzalez‐Campos et al. J Polym Sci Part B: Polym Phys 2009, 47, 932–943, reported the first evidence of a glass transition in a polysaccharide. To gain a better understanding on the molecular relaxations in polysaccharides, we study composites of chitosan (CS)/silver nanoparticles (…
Abstract A new quantitative fabric drape evaluation method using image-processing technology was published in Part 1 and submitted to the International Organization for Standardization as a revised international standard. In this research, the effects of fabric properties on drape parameters have been examined using t…
X-ray photoelectron spectroscopy at 3.5 keV photon energy, in combination with high-resolution transmission electron microscopy, is used to follow the formation of the interface between rhodium and carbon nanotubes. Rh nucleates at defect sites, whether initially present or induced by oxygen-plasma treatment. More uni…