Materials Literature
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A water-mediated transformation reversibly converts the neutral 3D microporous coordination polymers [Ln 2 (adipate) 3 (H 2 O) 4 ]·6H 2 O (Ln 3+ = Pr 3+ ) and [Ln 2 (adipate) 3 (H 2 O) 4 ] x H 2 O (Ln 3+ = Gd 3+, Sm 3+ ), into the ionic 1D polymer [Ln(adipate)(H 2 O) 5 ]XH 2 O (with X = NO 3 −, Cl − and Ln 3+ = Pr 3+,…
It is widely recognized that the surface properties of paper depend on the fibrous matrix and the final surface treatment applied to the paper. Regarding chemical paper surface treatments, an important issue is the evaluation of the penetration of chemical compounds into the fibrous matrix, as the chemicals can potent…
This work deals with the determination of polymer effective charge based on the sensitivity of detection in capillary electrophoresis using indirect UV detection. In this detection mode, the polyelectrolyte (solute) displaces a certain quantity of probe contained in the background electrolyte and having the same charg…
Compositional analysis of the peptidoglycan (PG) of a wild-type methicillin-resistant Staphylococcus aureus and its fem-deletion mutants has been performed on whole cells and cell walls using stable-isotope labeling and rotational-echo double-resonance NMR. The labels included [1-(13)C,(15)N]glycine and l-[epsilon-(15…
The doping of titanium dioxide (TiO 2 ) with various metal or nonmetal elements has been considered as an effective strategy to extend the photoactive wavelength region to visible light. In this paper (nitrogen [N] and sulfur [S])‐codoped anatase TiO 2 nanoparticles were prepared via a sol–gel route, followed by a hea…
Abstract In support of a split: A water oxidation catalyst based on ruthenium bis‐(2‐pyridyl)pyrazole anchored on rutile TiO2 was prepared. The performance of this new material with regard to its capacity to catalytically oxidize water to molecular oxygen in a heterogeneous phase was evaluated. magnified image Two org…
Three cadmium coordination polymers incorporating both a flexible aliphatic α,ω-dicarboxylate and the hydrogen-bonding capable diimine 4,4′-dipyridylamine (dpa) have been prepared and structurally characterized. {[Cd(adp)(dpa)]} n ( 1, adp = adipate) adopts a doubly interpenetrated decorated primitive cubic three-dime…
Discontinuous freeform lens based secondary optics are essential to LED illumination systems. Surface roughness and smooth transition between two discrete sub-surfaces are two of the most common manufacturing defects existing in discontinuous freeform lenses. The effects of these two manufacturing defects on the optic…
Abstract Little things count: The number of protons and the nature of cations of the dye influence the open‐circuit potential and the short circuit current of dye‐sensitized solar cells (DSCs, see picture). Thus, the effect of substituting the two tetrabutylammonium counter ions in the standard N719 dye by sodium ions…
Novel multicolored micellar complexes self-assembled from P(NIPAAm-co-EIPPMMA · Eu(DMB)3)-b-PVPhol and P(NIPAAm-co-HEMA · FITC)-b-PVP polymers are prepared. These complexes exhibit temperature- and pH-dependent fluorescence, suggesting promising applications for in vivo sensing of the pH and temperature in complicated…
We have investigated the formation of 2-adamantanethiolate self-assembled monolayers on Au{111} and their displacement by n-dodecanethiol, using scanning tunneling microscopy, X-ray photoelectron spectroscopy, and infrared reflection absorption spectroscopy. Well-ordered 2-adamantanethiolate monolayers undergo rapid a…
ABSTRACT The effect of a second non‐singular term of mode I in the vicinity of the tip of a V‐notched crack is discussed. The undetermined eigenvector coefficients of singular and non‐singular terms of eigenfunction expansion were calculated by the numerical analysis method using the reciprocal work contour integral m…
Two new 6,6-open phenyl-C(81)-butyric acid methyl ester metallofulleroids, M(3)N@C(80)PCBM (M = Sc, Y), were synthesized by diazoalkane addition reactions and fully characterized. The results demonstrate that the reactive sites are the same for M(3)N@C(80) (M = Sc, Y) but dramatically different from that of C(60).
Au-core C-shell nanoparticles are fabricated using a simple CVD process. As a result, an addressable quantity of materials is produced that is able to be biofunctionalized using standard techniques. These new materials are then capable of being used for bioanalytical protein detection.
Abstract The effect of 20 wt% polytetrafluoroethylene (PTFE) fillers on the friction and wear properties of thermoplastic polyimides (TP) are investigated, under dry sliding in line contact against steel under 50 to 200 N, 0.3 to 1.2 m/s, and 60 to 260°C. Besides the lubricating mechanisms of PTFE based on mechanical…
Abstract Multiwalled carbon nanotubes have been synthesized by catalytic chemical vapor deposition of ethylene, using two different catalysts in order to obtain nanotubes with average diameters of 24 and 58 nm, and different lengths. Polyamide 6 (PA6) was reinforced by melt‐mixing in an extruder with 2 wt% functionali…
We have investigated high-quality MgO tunnel junctions with a range of barrier thickness in order to identify the underlying physical mechanism responsible for dielectric breakdown. Two types of dielectric breakdown (“soft” and “hard”) were observed. Soft breakdown was observed in a few percent of the devices. This br…
Low-energy electrons (LEEs) interact with a DNA model system to create a variety of excited states. In the gas phase, dissociative (sigma*) states are accessible by LEEs with energy <4 eV (see picture) and cause facile strand breaks through a dissociative electron attachment mechanism. However, under solvation these d…
To explore the robust nature of template resorcinols in organic solid-state reactions, a series of mono- and dipyridines were cocrystallized with different substituted resorcinols. The organizational consequences of hydrogen-bonds in the hydroxyl···pyridine heterosynthon in the presence of competitive hydrogen-bonding…
Silver oxide/silver have been deposited, with varying silver concentration (0.01−10 mol %), on the surface of sol−gel derived nanocrystalline anatase titania using two different techniques, namely the ultraviolet reduction and chemical reduction (using stannous ions). The pure and silver oxide/silver-deposited nanocry…