Materials Literature
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Self-propelled catalytic bubble-ejecting nanotubes (nanojets) are expected to perform a variety of autonomous tasks. Herein, we will show that with the introduction of a Ni segment into the Au/Ni/Pt nanotube design followed by consequent magnetization a permanent change in the magnetic domain orientation of the Ni seg…
Well-defined norbornene-functional poly(carbonate)s were prepared by ring-opening polymerization and utilized as multireactive polymeric scaffolds in a range of postpolymerization modifications. The norbornene-functional handles were shown to undergo facile reaction with azides via a 1,3-dipolar cycloaddition, tetrazi…
Conferring biodegradability to nanoparticles is vitally important when nanomedicine applications are being targeted, as this prevents potential problems with bioaccumulation of byproducts after delivery. In this work, dextran has been modified (and rendered hydrophobic) by partial acetalation. A solid state NMR method…
High Resolution Image Download MS PowerPoint Slide The distorted octahedral complexes [SnCl 4 { n BuSe(CH 2 ) n Se n Bu}] ( n = 2 or 3), ( 1 ) and ( 2 ), obtained from reaction of SnCl 4 with the neutral bidentate ligands and characterized by IR/Raman and multinuclear ( 1 H, 77 Se{ 1 H} and 119 Sn) NMR spectroscopy an…
A fully ab initio technique is discussed for the determination of dynamical X-ray structure factors (XSFs) of crystalline materials, which is based on a standard Debye-Waller (DW) harmonic lattice dynamical approach with all-electron atom-centered basis sets, periodic boundary conditions, and one-electron Hamiltonians…
Electron- and hole-transport properties of the $n$-type copolymer poly${$[$N$,${N}^{\ensuremath{'}}$-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5${}^{\ensuremath{'}}$-(2,2${}^{\ensuremath{'}}$-dithiophene)$}$ [P(NDI2OD-T2), PolyeraActivInk™ N2200] are investigated. Electron- and hole-on…
This paper presents the stator and rotor shape designs in interior permanent magnet (IPM) type brushless dc (BLDC) motor for reducing torque fluctuation. The partly enlarged air-gap made by rotor unequal out diameter and stator core structure with pole shoe modification is introduced. The torque ripple reduction is ac…
Two reactions of phenols with arynes have been developed. If LiTMP base is employed, arynes generated from aryl chlorides react with phenols to form helicenes. o-Arylation of phenols can be achieved by employing tBuONa base in the presence of AgOAc. Direct arylation of binol was achieved leading to the shortest pathwa…
Traditional pH-sensitive hydrogels inevitably suffer strength deterioration while the responsive weak acid or base groups are in the ionized state. In this study, we report on a facile approach to fabricate a novel pH-sensitive high-strength hydrogel from copolymerization of two hydrogen-bonding motif-containing monom…
In this paper, the concept of double stators and the concept of magnetic gears are artfully integrated to form a novel class of machines. By utilizing the modulation-ring structure, the proposed machines can modulate the high-speed rotating armature field of the stators to match the low-speed rotating permanent-magnet…
The current contribution aims to prepare a family of nitrofurantoin (NF) co-crystals and to investigate the ability of these co-crystals in enhancing the photostability and clinically relevant physicochemical properties of NF. Accordingly, supramolecular synthesis of the antibiotic drug NF with the co-formers 3-aminob…
The photochemistry of fac-[Re(bpy)(CO)(3)Cl] (1 a; bpy=2,2'-bipyridine) initiated by irradiation using <330 nm light has been investigated. Isomerization proceeded in THF to give the corresponding mer-isomer 1 b. However, in the presence of a small amount of MeCN, the main product was the CO-ligand-substituted complex…
We have developed a double-channel high electron mobility transistor with back barriers for carrier confinement. We have observed that the double-channel devices may suffer from the lack of gate control particularly for the lower channel. However, the problem can be contained by using a suitable back barrier for the l…
A robust, electrically conductive, superamphiphobic fabric was prepared by vapour-phase polymerisation of 3,4-ethylenedioxythiophene (EDOT) on fabric in the presence of fluorinated decyl polyhedral oligomeric silsesquioxane (FD-POSS) and a fluorinated alkyl silane (FAS). The coated fabric had contact angles of 169° an…
Four new three-dimensional isostructural lanthanide-cadmium metal-organic frameworks (Ln-Cd MOFs), [LnCd(2)(imdc)(2)(Ac)(H(2)O)(2) ]·H(2)O (Ln=Pr (1), Eu (2), Gd (3), and Tb (4); H(3)imdc=4,5-imidazoledicarboxylic acid; Ac=acetate), have been synthesized under hydrothermal conditions and characterized by IR, elemental…
Abstract Two similar structural versions of a molecular donor, in which two terminal hexyl‐substituted bithiophene units are connected to a central dithienosilole (DTS) through electron deficient thiadiazolopyridine (PT) units, and which differ only in the position of pyridyl N‐atoms, were explored to study the interp…
Highly transparent (T% ≈ 90%) nickel sulfide electrodes were prepared by a facile electrodeposition technique to perform as counter electrodes and presented a good photovoltaic performance in thiolate/disulfide mediated dye-sensitized solar cells.
We reported a new family of water insoluble, biocompatible and biodegradable cationic arginine and phenylalanine based poly(ester amide)s (Arg-Phe-PEAs) for potential biomedical applications. The Arg-Phe-PEA consists of 3 building blocks: amino acids, diols, and dicarboxylic acids and was prepared from both l-arginine…
The chitosan oligosaccharide-based disulfide-containing polyethylenimine derivative PEG-ss-COS-ss-PEI was synthesized and evaluated as a nonviral gene delivery carrier. The structure of the obtained polymers was confirmed by 1H NMR and FTIR. PEG-ss-COS-ss-PEI copolymers could effectively condense DNA into small partic…
We examine the peak power handling capability of a class of miniaturized-element frequency selective surfaces composed entirely of non-resonant constituting elements. The effects of various design parameters on the peak power handling capability of these structures are investigated using electromagnetic simulations an…