Materials Literature
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Here we report the preparation of Eu 3+ -doped cubic NaYF 4 and hexagonal Na(Y 1.5 Na 0.5 )F 6 nanocrystals and the crystal phase is modified by temperature of heating and varying the Y 3+ /F − ratio. The volume fraction of the cubic phase decreases from 100 to 55% with increasing the temperature from 80 to 400 °C, an…
Colloidal gold bipyramids with a narrow ensemble plasmon resonance in the near-infrared are adhered on glass or silicon substrates using polyelectrolytes. Atomic force microscopy and scanning electron microscopy show a monolayer of the deposited colloids that remains nonaggregated, with an optical density of ∼0.1 at t…
Photocontrol of Bcl-x(L) binding affinity has been achieved by using short BH3 domain peptides for Bak(72-87) and Bid(91-111) alkylated with an azobenzene crosslinker through two cysteine residues with different sequence spacings. The power to control the conformation of the crosslinker and hence peptide structure was…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTHierarchically Ordered Polymer Nanofibers via Electrospinning and Controlled Polymer CrystallizationBingbing Wang, Bing Li, Jie Xiong†, and Christopher Y. Li*View Author Information A. J. Drexel Nanotechnology Institute and Departme…
The effect of short-chain branching (SCB) on the persistence length l p of polyethylene (PE) was studied using small-angle neutron scattering (SANS). In thermodynamically good solvents, l p can be measured directly from the scattering vector q tr at the crossover from good solvent mass-fractal scaling to the rodlike p…
Supramolecular polymers are chains of small molecules held together through reversible noncovalent interactions. In general, a given monomer self-assembles into a single type of supramolecular polymer. However, in a few cases, two different self-assembled structures can coexist; this yields interesting responsive syst…
PURPOSE: In vivo evaluation of good manufacturing practice-grade targeted liposomal doxorubicin (TVT-DOX), bound to a CD13 isoform expressed on the vasculature of solid tumors, in human tumor xenografts of neuroblastoma, ovarian cancer, and lung cancer. EXPERIMENTAL DESIGN: Mice were implanted with lung, ovarian, or n…
The Protein Structure Initiative Structural Genomics Knowledgebase (PSI SGKB, http://kb.psi-structuralgenomics.org) has been created to turn the products of the PSI structural genomics effort into knowledge that can be used by the biological research community to understand living systems and disease. This resource pr…
We study the feasibility of the alkali-metal (AM = Li, Na, K)-doped B 80 fullerenes for hydrogen storage using first-principles calculations. It is found that the AM atoms are strongly attached at the centers of the pentagons of the B 80, forming B 80 AM m complexes (1 ≤ m ≤ 12). This bonding can be attributed to the…
Dehydration of the Prussian blue analogues CsNi[Cr(CN)(6)] x 2 H(2)O (1) and Cr(3)[Cr(CN)(6)](2) x 10 H(2)O (2) affords two new microporous magnets: CsNi[Cr(CN)(6)] (1d) and Cr(3)[Cr(CN)(6)](2) x 6 H(2)O (2d). Compounds 1d and 2d maintain the Prussian blue structure, and N(2) adsorption measurements at 77 K show them…
Recent experimental and theoretical studies of the magnetoelectric (ME) effect in the nanocomposite structures and in laminates show an enhanced ME coefficient. These materials combine piezoelectric properties of the paramagnetic phase and piezomagnetic properties of the magnetic phase. We propose to fabricate heteros…
The nucleation and growth of palladium clusters supported on anatase TiO 2 (101) surface has been studied using periodic supercell models and density functional theory. The most active site for single Pd adatom on the perfect TiO 2 (101) surface is the bridge site formed by two two-coordinated oxygen (2cO) atoms at th…
The supramolecular interactions are of importance for inducing the molecular orientation and constructing functional materials with high performance. In this manuscript we report uniaxially oriented molecular crystal of a cyano substituted oligo( p -phenylene vinylene) 1,4-bis(α-cyano-4-diphenylaminostyryl)-2,5-diphen…
The kinetics and microstructure of solid-phase crystallization under continuous heating conditions and random distribution of nuclei are analyzed. An Arrhenius temperature dependence is assumed for both nucleation and growth rates. Under these circumstances, the system has a scaling law such that the behavior of the s…
Welding nanocrystals for assembly: The welding of Au domains grown on the tips of shape-controlled cadmium chalcogenide colloidal nanocrystals is used as a strategy for their assembly. Iodine-induced coagulation of selectively grown Au domains leads to assemblies such as flowerlike structures based on bullet-shaped na…
Shear banding is an important feature of flow in complex fluids. Essentially, shear bands refer to the coexistence of flowing and non-flowing regions in driven material. Understanding the possible sources of shear banding has important implications for a wide range of flow applications. In this regard, quasi-two dimen…
The direct synthesis of hydrogen peroxide on Pd and Pd/Au catalysts was investigated with first-principle DFT methods for periodic two-dimensional surfaces. A two-step reaction mechanism was proposed starting from a superoxo precursor state of the dioxygen molecule on Pd surface and its subsequent reaction with two hy…
The Kramers-Kronig relations between the real and imaginary parts of a response function are widely used in solid-state physics to evaluate the corresponding quantity if only one component is measured. They are among the most fundamental statements since only based on the analytical behavior and causal nature of the m…
RuO2·xH2O nanodots highly dispersed onto the surfaces of poly(sodium 4-styrene sulfonate) (PSS) functionalized multi-walled carbon nanotubes (FMWCNTs) were successfully synthesized via a polymer-assisted technique under mild hydrothermal conditions. Here, PSS served as a bifunctional molecule both for solubilizing and…
Ionogels are solid oxide host networks confining at a meso-scale ionic liquids, and retaining their liquid nature. Ionogels were obtained by dissolving lanthanide(III) complexes in the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C6mim][Tf2N], followed by confinement of the lanthanide-d…