Materials Literature
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To and fro: Chiral metal–organic frameworks (CMOFs) derived from redox-active ruthenium/salen building blocks exhibited reversible single-crystal to single-crystal reduction and reoxidation. The catalytically inactive RuIII CMOFs (green; see picture) were reduced to RuII CMOFs (red) that were highly active for the asy…
The use of high-permittivity materials has been shown to be an effective method for increasing transmit and receive sensitivity in areas of low-signal intensity in the brain at high field. Results in this article show that the use of these materials does not increase the intercoil coupling for a phased array receive c…
Springing the trap: A pH-responsive mesoporous silica nanoparticle with a calcium phosphate (CaP) pore-blocking coating was developed by enzyme-mediated surface mineralization under mild conditions. Upon exposure to cellular lysosomal pH, guest anticancer drug was released from the pore by dissolution of the CaP pore…
Herein reported is a fundamentally new strategy for the design of high-power and high energy-density devices. This approach is based on the exchange of lithium ions between the surfaces (not the bulk) of two nanostructured electrodes, completely obviating the need for lithium intercalation or deintercalation. In both…
PTB7 semiconducting copolymer comprising thieno[3,4-b]thiophene and benzodithiophene alternating repeat units set a historic record of solar energy conversion efficiency (7.4%) in polymer/fullerene bulk heterojunction solar cells. To further improve solar cell performance, a thorough understanding of structure-propert…
Self-assembled hierarchical MoO(2)/graphene nanoarchitectures have been fabricated on a large scale through a facile solution-phase process and subsequent reduction of the Mo-precursor/graphene composite. The as-formed MoO(2)/graphene nanohybrid as an anode material for lithium-ion batteries exhibits not only a highly…
Abstract The effect of carbon nanofiber on the thermal behavior of poly(ethylene‐co‐propylene) (PEP) as revealed by differential scanning calorimetry and thermogravimetric analysis is reported. Analysis showed faster crystallization of PEP at higher temperature upon cooling with the increase of carbon nanofiber (CNF)…
We report on the characterization of various salts of [MnIII6CrIII]3+ complexes prepared on substrates such as highly oriented pyrolytic graphite (HOPG), mica, SiO2, and Si3N4. [MnIII6CrIII]3+ is a single-molecule magnet, i.e., a superparamagnetic molecule, with a blocking temperature around 2 K. The three positive ch…
Abstract Influence of ultrafine carboxylic acrylonitrile butadiene rubber powder (XNBRP) on properties of natural rubber (NR) was investigated. Mechanical properties, thermal resistance, and oil resistance of XNBRP‐filled NR were determined after various loadings of XNBRP were added. Results clearly show that the pres…
In this paper, we have developed a facile MgCl2-assissted hydrothermal synthesis route to grow tubular aragonite whiskers on a large scale. The products have been characterized by powder X-ray diffraction (XRD), optical microscopy, and scanning electronic microscopy (SEM). The results show the as-grown product is pure…
Abstract In this work, we have synthesis nylon‐6/polyethylene oxide (PEO) copolymer system based on feed ratio of PEO (0∼ 10 wt %) through condensation polymerization in a pilot scale. The structure of copolymer was confirmed by Fourier transform infrared (FTIR) spectroscopy and verified by 1H nuclear magnetic resonan…
We investigate the electronic structure of carbon nanotubes functionalized by adsorbates anchored with single C-C covalent bonds. We find that despite the particular adsorbate, a spin moment with a universal value of 1.0 μB per molecule is induced at low coverage. Therefore, we propose a mechanism of bonding-induced m…
Abstract Phase transfer catalyzed reactions are often more easily and cheaply performed than conventional method and they are therefore of particular interest. A polysulfone functionalized with phosphonate (2‐PSF) was prepared under phase transfer catalysis (PTC) conditions, and it was evaluated by spectrometric metho…
Using first-principles calculations in the framework of density functional theory, we studied the electronic structure and optical performance of TiN. It was found that the calculated structure parameter and optical performance are in better agreement with the latest relevant experimental data, and our theoretical stu…
Abstract The elastic modulus (El) of crystalline regions in the direction parallel to the chain axis in a new semiaromatic polyamide 9‐T (PA9‐T) containing a long aliphatic chain unit was measured by X‐ray diffraction and the derived El value was discussed in terms of its molecular conformation and mechanical properti…
Ultrapure: The absolute purity of defect-free and structurally perfect single-walled carbon nanotubes in a bulk sample can be determined with density gradient ultracentrifugation (see picture). The experimental protocol offers a quick and reliable tool and is applicable to a broad variety of nanotube materials to eval…
Time resolved infrared spectroscopy has been applied to study in situ the evaporation process of a 3-glycidoxypropyltrimethoxysilane hybrid sol by casting a droplet on a ZnSe substrate; the analysis has been performed in the middle-infrared range and in the near-infrared range. The experiment has allowed following the…
Tests were conducted on the performance of UNS S31600 stainless steel (SS) in a natural day/night cycle vs full darkness under conditions of natural marine biofilm accumulation. In quiescent flowing seawater tests in the laboratory as well as under natural immersion in the sea, diffuse sunlight (∼10% of natural) count…
This work reports on the energy level alignment and charge transfer in organized assemblies of CdTe and CdSe nanoparticles (NPs), for both electrochemical systems and in solid-state photovoltaic devices. This work shows how control over the energy level alignment, by manipulation of the size and surface ligands of the…
Abstract Composites of polypropylene (PP) with nontreated nanosilica at different particle sizes are prepared, and their viscoelastic properties are studied by dynamic strain‐ and frequency‐sweep experiments. It is clear that incorporation of nanoparticles in a polymer matrix due to the huge specific surface area enha…