Materials Literature
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Extended x-ray absorption fine-structure measurements have been performed on ZnSe crystals doped with Er by an addition of ErF 3 during growth. The results show that Er exists in these samples in an orthorhombic configuration with nine nearest F neighbours similar to that in orthorhombic ErF 3 . The energy level split…
SCOPUS: le.j
A technique to improve thin-film yield in chemical bath deposition of semiconductor thin films is presented. This involves the use of very small substrate separation, 0.1 mm, to eliminate the passive layer of the bath, which contributes solely to precipitation. At small substrate separation, a thin layer of the bath m…
In this work, gadolinium oxide (Gd2O3) films were obtained by the vacuum evaporation method. Films were tested by x-ray diffraction and energy dispersive x-ray fluorescence analysis. The attenuation of x-rays through the sample, and the absorption-corrected x-ray fluorescence yield, was utilized for quantitative analy…
We present the first results relative to the diffusion process of proteins (human serum albumin) adsorbed on or embedded in poly(sodium 4-styrenesulfonate)/poly(allylamine hydrochloride) polyelectrolyte multilayer films by using fluorescence recovery after photobleaching. At least two populations of adsorbed proteins…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTStructural and Thermosensitive Properties of Cyclotriphosphazenes with Poly(ethylene glycol) and Amino Acid Esters as Side GroupsSang Beom Lee, Soo-Chang Song, Jung-Il Jin, and Youn Soo SohnView Author Information Inorganic Chemistry Laboratory, Korea Institute of Science and T…
N -Methylated pyridospiropyran cations SP-R + (R= Me, Ph) have been inserted into MnPS 3 by ion exchange to yield Mn 1 - x PS 3 (SP-R) 2 x intercalates. Thin transparent films of these materials have been processed, which exhibit photochromism due to spiropyran−merocyanin transformation. Intercalation considerably sta…
Abstract 4‐ tert ‐Butylstyrene‐EPDM‐divinylbenzene graft polymer (PBED) was prepared by graft crosslinking polymerization in toluene using BPO as an initiator. Gel and sol of PBED were isolated by extraction with tetrahydrofuran (THF). Sol PBED can be reused as oil absorbent through cross‐linking by ultraviolet irradi…
We synthesized analogous series of monodisperse ABC triblock copolymers with symmetrical end blocks A/C and different short middle blocks B (5−10 wt %) with varying polarities by sequential anionic polymerization, i.e., polystyrene- b- poly(2-vinylpyridine)- b -poly(methyl methacrylate) (PS- b -P2VP- b -PMMA) and poly…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTAromatic Polyethers with Low Polydispersities from Chain-Growth PolycondensationTsutomu Yokozawa, Yukimitsu Suzuki, and Shuichi HiraokaView Author Information Department of Applied Chemistry, Kanagawa University Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan Cite…
The synthesis of poly(trifluoropropylmethyl)siloxane (PTFPMS) by anionic ring-opening polymerization of 1,3,5-tris(trifluoropropylmethyl)cyclotrisiloxane (F 3 ) was studied in miniemulsion using didodecyldimethylammonium bromide (DDDBr) as emulsifier and sodium hydroxide as initiator. This new process of polymerizatio…
Spontaneously forming H- and J-type chiral self-assemblies of lutein and lutein diacetate were studied by means of ultraviolet−visible and circular dichroism spectroscopy (CD). Spectroscopic properties of their thin films has been determined for the first time. Existence of chiral superstructures in both solution and…
Semiconductor SnO 2 nanowire arrays were fabricated by electrochemical deposition and thermal oxidizing methods based on highly ordered nanoporous alumina membrane. Their microstructures were characterized by X-ray diffraction, transmission electron microscopy, Raman spectrum, and scanning electron microscopy. The res…
Core−shell colloids comprising gold nanoparticles and a uniform titania coating were prepared by the complexation of polyelectrolyte preassembled on the core particles with titanium(IV) bis(ammonium lactato) dihydroxide (TALH) in aqueous solution, followed by hydrolysis of TALH.
We have examined the effect of an oscillatory rotation of a polarized dielectric particle. The rotational motion leads to a re-distribution of the polarization charge on the surface of the particle. We show that the time averaged steady-state dipole moment is along the field direction, but its magnitude is reduced by…
A large magnetic entropy change $|\ensuremath{\Delta}S|$ has been observed in Heusler alloy ${\mathrm{Ni}}_{52.6}{\mathrm{Mn}}_{23.1}{\mathrm{Ga}}_{24.3}$ single crystal near the martensitic structural transition temperature of 300 K with applied field along [001] direction. The obtained $|\ensuremath{\Delta}S|$ under…
The new oxychloride InTeO(3)Cl was synthesized from a mixture of In(2)O(3), InCl(3) and TeO(2). Its structure has been determined from single-crystal X-ray diffraction data. The structure is composed of layers separated by a van der Waals gap. The layers consist of edge-sharing chains of [InO(4)Cl(2)] octahedra linked…
Abstract A series of aliphatic poly(carbonate‐ co ‐phosphate)s was synthesized in bulk using aluminium isopropoxide as initiator by ring‐opening polymerization with various cyclic carbonates (trimethylene carbonate (TMC) and 5,5‐dimethyltrimethylene carbonate (DTC)) and cyclic phosphates (ethylene ethyl phosphate (EEP…
Three newly elucidated crystal structures of group IV phthalocyaninato complexes are reported, along with data for two further SiPc carboxylate complexes. In one of these crystal structures, bis(undecylcarboxylate)Sn(IV) phthalocyanine, the tin ion is seven coordinate, which is a unique finding for this atom in phthal…
The selected-area electron diffraction technique has been used to investigate the structure of bundles of single-wall carbon nanotubes synthesized by the catalytic chemical vapor deposition method. The helicity and lattice packing of the single-wall carbon nanotubes within the bundles have been deduced from the experi…