Materials Literature
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Recently developed photoelectrode Ag 3 PO 4 exhibits extremely high quantum yield (up to 90% at 420 nm) of O 2 generation from water oxidation, but it can only absorb part of visible light and cannot reduce water to release H 2 . It is still a challenge to develop the high performance water splitting photocatalysts to…
Combinations of additives (polymers and surfactants) are often used in pharmaceutical products to improve the delivery of poorly water-soluble active pharmaceutical ingredients (API). Additive interactions have not been widely studied and may promote or inhibit crystallization (nucleation and crystal growth) in an unp…
Atmospheric humidity strongly influences the interactions between dry granular particles in process containers. To reduce the energy loss in industrial production processes caused by particle agglomeration, a basic understanding of the dependence of particle interactions on humidity is necessary. Hence, in this study,…
Abstract Aliphatic polyurethanes could be obtained in high yield via a non‐isocyanate method based on the self‐polycondensation of dihydroxyurethanes obtained by the reaction of diamines and ethylene carbonate. The polycondensation under a N 2 atmosphere yielded [6,2]polyurethane with a M n value of 5300 in 87% yield.…
Homo- and copolymers of N -vinylimidazole belong to a rapidly emerging class of polymeric materials. Because of the fact that these materials can be utilized in several high-temperature processes and applications, such as catalysis, fuel cells, polymeric ionic liquids (PIL), precursors for new materials by thermolysis…
Semiconductor photocatalysis is an important process for a variety of applications. However, the high recombination rate is still a limiting factor for the photocatalytic activity of the current photocatalysts. Several strategies were employed in an attempt to reduce the recombination rate, including doping with trans…
The occupied and unoccupied in-gap electronic states of a Rh-doped SrTiO 3 photocatalyst were investigated by X-ray emission spectroscopy and X-ray absorption spectroscopy for different Rh impurity valence states and doping levels. An unoccupied midgap Rh 4+ acceptor state was found 1.5 eV below the SrTiO 3 conduction…
Lithium manganese silicate positive electrode materials have received great attention because of the two lithium ion capacities and can be realized in ultrafine nanoparticles due to their low volumetric changes upon lithium insertion and extraction. A supercritical fluid process has been adopted to synthesize monodisp…
We simulated the behavior of suspended carbon nanotube resonators over a broad range of temperatures to explore the physics of semiflexible polymers in underdamped environments. We find that thermal fluctuations induce strong coupling between resonance modes. This effect leads to spectral fluctuations that readily acc…
Abstract This microreview focuses on several thiophene‐annulation reactions of less cyclic precursors on aromatic units (“thienannulation reactions”), which have been applied to the synthesis of a range of π‐extended thienoacene‐based organic semiconductors. Those thienannulation reactions can be applicable to the syn…
Four unusual isomorphous metal–organic frameworks, [M 2 (L1)(L2) 2 ] (M = Co for 1, Mn for 2, Zn for 3, and Cd for 4 ), where H 4 L1 = tetrakis[4-(carboxyphenyl)-oxamethyl]methane acid and L2 = 4-tolyl-2,2′:6′,2″-terpyridine, have been synthesized under hydrothermal conditions. Their structures have been determined by…
Abstract This paper reports on the photochemical behavior upon exposure to UV‐visible light of a poly(2,7‐carbazole) derivative for use in high‐performance solar cells. Poly[N‐9′‐hepta‐decanyl‐2,7‐carbazole‐alt‐5,5‐(4′,7′‐di‐2‐thienyl‐2′,1′,3′‐benzothiadiazole)] (PCDTBT) is one of a relatively large class of push‐pull…
Motivated by the enhanced cytotoxicity of some chemotherapeutic agents at temperature rise, multifunctional chitosan nanospheres which co-carried gold nanorods and cisplatin were prepared. These hybrid nanospheres were characterized by dynamic light scattering, zeta potential, UV-Vis absorption spectra and transmissio…
Abstract A new strategy to compatibilize immiscible blends is proposed, using graphene oxide (GO) nanosheets taking advantage of their unique amphiphilic structures. When 0.5 or 1 wt% GOs were incorporated in immiscible nylon 6/poly(vinylidene fluoride) (PVDF) (90/10 wt%) blends, the dimension of PVDF dispersed partic…
Abstract Single‐crystal, 1D nanostructures are well known for their high mobility electronic transport properties. Oxide‐nanowire field‐effect transistors (FETs) offer both high optical transparency and large mechanical conformability which are essential for flexible and transparent display applications. Whereas the “…
Natural saccharides are involved in numerous biological processes. It has been shown that these carbohydrates play a role in cell adhesion and proliferation, as well as protein stabilization, organization, and recognition. Certain carbohydrates also serve as receptors for viruses and bacteria. They are over expressed…
The surface structure-controlled synthesis of noble metal nanocrystals (NCs) bounded by high-index facets has become a hot research topic due to their potential to significantly improve catalytic performance. This study reports the preparation of monodisperse Au-Pd alloy NCs with systematic shape evolution from rhombi…
An electrically conductive polypyrrole (PPy) doped with a bioactive agent is an emerging functional biomaterial for tissue engineering. We therefore used chondroitin sulfate (CS)-doped PPy coating to modify initially electrically insulating polylactide resulting in novel osteogenic scaffolds. In situ chemical oxidativ…
In this study, we designed a fluorescence resonance energy transfer system containing gold nanorods (AuNRs) and fluorescein (FAM) for the detection of hepatitis B virus DNA sequences. AuNRs were synthesized according to the seed-mediated surfactant-directed approach, and the surface of the AuNRs was wrapped with a thi…
The concept of embedding a spinel component in high capacity, composite xLi 2 MnO 3 •(1−x)LiMO 2 (M = Mn, Ni) 'layered-layered' structures to improve their electrochemical properties and cycling stability has been exploited. In this paper, we report the preparation and electrochemical characterization of three-compone…