Materials Literature
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A novel space-filling trialkoxysilane derivative was synthesized using a two-step strategy from commercially available starting materials to produce the precursor for the formation of low-density self-assembled monolayers. Self-assembled monolayers of the synthesized compound were prepared on three different substrate…
Carbon black (CB)-filled high density polyethylene (HDPE) composites, incorporating with or without tris(hydroxymethyl)aminomethane (Tris), were prepared by melt blending. The effects of CB oxidation and Tris incorporation on the resistivity-temperature characters were studied. The negative temperature coefficient eff…
The new kind of iron-based superconductor FeSe which has being widely studied recently is arsenic-free and has about 8 K of Tc. The less poisonous and simple binary FeSe is interesting for both scientific studies and engineering applications, even though its Tc is lower than that of other iron-based compounds. Recentl…
Abstract Passivation of porous silicon sensors is a critical issue for achieving high sensitivity and selectivity toward biomolecule targets that may be detected in complex physiologic solution. Without appropriate passivation, degradation of the porous silicon matrix inhibits the repeatability of optical measurements…
Abstract A series of copolyesters were prepared by the direct melt transesterification of poly(trimethylene terephthalate) (PTT) and poly(butylene succinate) (PBS). The sequential structure of the copolyesters was analyzed with proton nuclear magnetic resonance spectroscopy, and the randomness of the copolyesters was…
Abstract The properties of porous silicon make it an interesting material for biological applications. However, porous silicon is not an appropriate surface for cell growth. Surface modification is an alternative that could afford a bioactive material. In this work, we report a method to yield materials by modificatio…
Here we report the synthesis of monofunctional PEGylated amide ligands that were used to prepare bioactivable quantum dots of a 20 nm diameter with a controlled mean number of the covalently grafted ligands. They are stable in aqueous medium of high salinity including a large pH domain.
Water-soluble CdTe quantum dots (QDs) were synthesized by using a 3-mercaptopropionic acid (MPA) capped method. Stable electrochemiluminescence (ECL) was obtained when the CdTe QDs were immobilized onto a glassy carbon electrode (GCE) by Layer-By-Layer (LBL) assembly of CdTe QDs and polydiallyldimethylam-monium chlori…
Auf den Punkt gebracht: Ein einfaches Extraktionsverfahren unter Verwendung von quartären Ammoniumsalzen mit einer Polyethylenglycol-Kette als Phasentransferreagens bietet Zugang zu lösungsmittelfreien, fließfähigen Quantenpunkten. Die Produkte sind monodispers, wenig viskos und zeigen exzellente Photolumineszenzen (s…
The structure transitions and phase relationships of DyFe 3− x Al x compounds have been investigated by X-ray powder diffraction. Our XRD results show that each of the compounds with x ≤0.45 crystallizes in the rhombohedral PuNi 3 -type structure with space group R 3¯ m and Z =9; for the 0.8≤ x <1.0 compounds, each…
The reduction processes of Eu 3+ ions in aluminoborosilicate glasses were studied using both high‐temperature melting in air and β‐irradiation by time‐resolved luminescence and electron paramagnetic resonance spectroscopies. The Eu 2+ ions produced during the synthesis are characterized by the UV excited broadband lum…
Inhibition of brass corrosion by sodium diethyldithiocarbamate (DDTC) in 3% sodium chloride (NaCl) solution was investigated using the mass-loss method, electrochemical impedance spectroscopy (EIS), polarization curve method, and surface analysis method. Mass-loss results showed that the DDTC was an excellent inhibito…
The structures of small, robust metal clusters on a solid support were determined by a combination of spectroscopic and microscopic methods: extended X-ray absorption fine structure (EXAFS) spectroscopy, scanning transmission electron microscopy (STEM), and aberration-corrected STEM. The samples were synthesized from…
Convergent beam electron diffraction combined with conventional transmission electron microscopy is used to determine the crystal symmetry, and with energy‐dispersive spectrometry (EDS) the microchemistry of BaTiO 3 grains in (CaO+MgO)‐codoped, EIA‐X7R multilayer ceramic capacitors (MLCCs). The point group symmetries…
A novel family of thiophene-decorated phthalocyanines (M-TPcs) was efficiently synthesized, during which the key intermediate of these compounds was purified through a chemical approach. In the optimized geometries of M-TPcs, the peripherally linked thiophene rings are tilted from the Pc core, which oppose aggregation…
Abstract Layers of Si nanocrystals in a dielectric matrix have promising properties to be implemented as the absorber layer in a top cell of a Si‐based tandem solar cell. Si nanocrystals in SiC are produced by plasma deposition of Si rich a‐SiC:H and subsequent solid phase crystallization by thermal annealing at tempe…
The temperature and electric field dependence of electron mobilities in conjugated polyelectrolytes (CPEs) with structure variations of the ionic functionality and counterions were investigated to gain insight into the influence of these parameters on charge transport. Electron mobilities were determined by using elec…
The solvent-free conversion of N-carbamoyl-L-proline to hydantoin-L-proline by direct heating at 470 K is reported. A reaction mechanism is proposed based on a nucleophilic intramolecular substitution reaction involving both the lone pair of the NH 2 group and the carboxylic acid group of the N-carbamoyl-L-proline. Th…
A novel hyperbranched polyphosphate bisphenol-S ester (HPPES) flame retardant was prepared. The structure and thermal stability of the product were characterized. Polyamide 6 (PA6), HPPES and melamine pyrophosphate (MPP) were used to prepare flame retardant PA6 (FR-PA6) through melt blending. Limiting oxygen index (LO…
Abstract The strain‐induced crystallization (SIC) behaviors of crosslinked blends based on natural rubber (NR) and trans ‐1,4‐polyisoprene (TPI) with different content of TPI were probed explored by using synchrotron two‐dimensional wide angle X‐ray diffraction and dynamic mechanical analysis. The results showed that…