Materials Literature
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We designed and fabricated thin single-microcrystals of a photochromic diarylethene, 1,2-bis(2-methoxy-5-phenyl-3-thienyl)perfluorocyclopentene, which exhibits photochromic reactions up to high conversion in high efficiency because the diarylethene molecule has extremely small photocycloreversion quantum yield. The th…
Abstract Remote detection of reactive analytes using optical films constructed from electrochemically prepared porous Si‐based photonic crystals is demonstrated. Porous Si samples are prepared to contain either surface oxide or surface Si‐H species, and analyte detection is based on irreversible reactions with HF (aq)…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTFunctionalized Polylactide Film Surfaces via Surface-Initiated ATRPF. J. Xu*, X. C. Yang, C. Y. Li, and W. T. YangView Author Information State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Colleg…
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Abstract A multi‐component catalyst Ni‐VO x /AC (VO x is comprised of V 2 O 5 and VO 2 , x = 2.18) was synthesized by a wet impregnation method. The synthesized Ni‐VO x /AC shows a superior catalytic effect on de/hydrogenation of Mg. The MgH 2 +Ni‐VO x /AC composites can absorb 6.2 wt.‐% hydrogen within only 1 min at…
The well-defined core-shell carbon black/polypyrrole (CB/PPy) nanocomposites were prepared via the in situ chemical oxidative polymerization of pyrrole from the surfaces of the carbon black (CB) nanoparticles, with poly(2-hydroxy-3-(methacryloyloxy) propane-1-sulfonate) (PHMAS) as both the surfactant and the dopant. T…
Chemical substitution-induced continuous ferroelectric polarization rotation in BiFeO3 is discovered. Rare-earth-substituted BiFeO3 is a unique system in which the ferroelectric polarization vector continuously rotates, and by controlling the composition via substitution, a particular direction of the polarization vec…
The geometrical configuration of Au:Ag nanoparticle heterodimers can be optimized to produce prominent Fano resonance (FR) signals, strong enough to be detectable by standard spectroscopic techniques. The highest intensity of the FR in these bimetallic dimers is reached when the size ratio of the nanoparticles ( R Au:…
To find out efficient red phosphors used for white light-emitting diodes (LEDs), a new Ba2Gd2Si4O13:Eu3+ phosphor was prepared by conventional solid-state reaction method. The effect of Li2CO3 flux and Eu3+ doping concentrations on structural and luminescent properties of Ba2Gd2Si4O13 phosphors was studied in detail.…
In this study, we have developed a novel carrier, micelle-type bioconjugated PLGA-4-arm-PEG branched polymeric nanoparticles (NPs), for the detection and treatment of pancreatic cancer. These NPs contained 4-arm-PEG as corona, and PLGA as core, the particle surface was conjugated with cyclo(arginine-glycine-aspartate)…
The Young's modulus of multilayer films containing nanofibrillated cellulose (NFC) and polyethyleneimine (PEI) was determined using the strain-induced elastic buckling instability for mechanical measurements (SIEBIMM) technique. (1) Multilayer films were built up on polydimethylsiloxane substrates using electrostatic…
Abstract The fabrication of a flexible field‐emission device (FED) using single‐walled carbon nanotube (SWNT) network films as the conducting electrodes (anode and cathode) and thin multi‐walled CNT/TEOS hybrid films as the emitters is reported. P‐type doping with gold ions and passivation with tetraethylorthosilicate…
Modern solid-state NMR techniques, combined with X-ray diffraction, revealed the molecular origin of the difference in mechanical properties of self-associated chitosan films. Films cast from acidic aqueous solutions were compared before and after neutralization, and the role of the counterion (acetate vs Cl(-)) was i…
Increasing interest in graphene research in basic sciences and applications emphasizes the need for an economical means of synthesizing it. We report a method for the synthesis of graphene on commercially available stainless steel foils using direct thermal chemical vapor deposition. Our method of synthesis and the us…
Bimetallic nanoparticles: Au–Ag core–shell heterometallic nanorods and icosahedra can be prepared from Au decahedral seed particles using plasmon-mediated synthetic methods and adjusting the pH value of the solution (see picture). This method allows for the preparation of icosahedral nanostructures with an asymmetric…
Phenyliodine(III) bis(trifluoroacetate) (PIFA) in conjunction with a Lewis acid promotes C-C coupling of Bodipy monomers leading to mixtures of various oligomers. When a single position is blocked with an iodo or phenyl group, formation of the dimer is favored. These dimers display two successive oxidation and two red…
Atomic layer deposition (ALD) was used to synthesize graphene-based metal oxide nanocomposites. This strategy was fulfilled on the preparation of TiO(2)-graphene nanosheet (TiO(2)-GNS) nanocomposites using titanium isopropoxide and water as precursors. The synthesized nanocomposites demonstrated that ALD exhibited man…
In this article, an angle-resolved photoelectron spectroscopy (ARPES), X-ray absorption spectroscopy (XAS), and density-functional theory (DFT) investigations of water and ammonia adsorption on graphene/Ni(111) are presented. The results of adsorption on graphene/Ni(111) obtained in this study reveal the existence of…
We compute the equilibrium crystal structure and phase stability of iron at the $\ensuremath{\alpha}(\mathrm{bcc})\ensuremath{-}\ensuremath{\gamma}(\mathrm{fcc})$ phase transition as a function of temperature, by employing a combination of ab initio methods for calculating electronic band structures and dynamical mean…
We investigate scattering process in an ultra-high-Q optical microcavity coupled to subwavelength scatterers by introducing "splitting quality" Qsp, a dimensionless parameter defined as the ratio of the scatterer-induced mode splitting to the total loss of the coupled system. A simple relation is introduced to directl…