Materials Literature
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We determine the capillary attraction and equilibrium configurations of particles trapped at a liquid-fluid interface due to the pinning of their contact line. We calculate analytically the asymptotic interaction energy between two particles and, numerically, the multibody energy landscape for up to four contacting pa…
Vapor sensors using thin porous silicon (PS) Fabry-Pérot films were prepared and characterized. The detection method used in this work involves measurement of the intensity of reflected light from a microporous Si film as a function of analyte concentration. Analyte adsorption within the pores of the film causes the F…
We report the preparation of loadable ultrathin, multilayered polyelectrolyte/dendrimer films by the sequential electrostatic deposition of negatively charged poly(styrenesulfonate) (PSS) and a positively charged fourth generation poly(amidoamine) dendrimer (4G PAMAM). Multilayers were first constructed on planar supp…
Charge distribution in the insulating phase of $\ensuremath{\theta}\ensuremath{-}(\mathrm{BEDT}\ensuremath{-}\mathrm{TTF}{)}_{2}\mathrm{RbZn}(\mathrm{SCN}{)}_{4}$ [BEDT-TTF denotes bis(ethylenedithiolo)tetrathiafulvalene] is investigated using the polarized Raman and infrared (IR) spectroscopy. Both of the Raman and I…
Multilayer films of nanoparticles were grown in a systematic and controlled manner layer-by-layer by alternating exposures of suitably functionalized substrates (glass, Au) to either poly(allylamine) and carboxylic acid-functionalized nanoparticles or to poly(styrene sulfonate) and arylamine-functionalized nanoparticl…
We report experimental measurements of the adsorption of methane and ethane, and binary mixtures of these components, on MCM-41. This adsorbent, which has a simple, regular pore structure and a chemically homogeneous surface, was used as a model system on which to evaluate methods for the prediction of adsorption equi…
We have studied the electronic structure of ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}\mathrm{O}$ using photoemission spectroscopy measurements and configuration-interaction (CI) calculations on a ${\mathrm{MnO}}_{4}$ cluster model. It is shown that the CI calculation can give a consistent description of the p…
The aggregation behavior of protoporphyrin IX in aqueous solution, as a function of pH and ionic strength, has been studied by means of UV/vis, fluorescence emission spectroscopy, and resonant light scattering (RLS) techniques. Our experimental results agree with previous literature assignments: (i) protoporphyrin IX…
In recent years electronic structures of ${\mathrm{Bi}}_{2}{\mathrm{Te}}_{3}$ and related materials have been studied theoretically through ab initio band-structure calculations and experimentally through photoemission experiments, but to the best of our knowledge, a detailed comparison between experiment and theory h…
Production of stable polymer−nanotube composites depends on good wetting interaction between polymer and nanotube, which is polymer specific, and depends in particular on chain conformation. In this paper, we examine this interaction for a conjugated, semiconducting polymer by a range of microscopic and spectroscopic…
We have performed a series of ab initio calculations to determine the atomic structure, ideal work of adhesion $({\mathcal{W}}_{\mathrm{ad}\mathrm{}}),$ and bonding character of the $\mathrm{Al}(111)/\ensuremath{\alpha}\ensuremath{-}{\mathrm{Al}}_{2}{\mathrm{O}}_{3}(0001)$ interface. Six candidate interface geometries…
Three new molybdenyl iodates, KMoO3(IO3) (1), RbMoO3(IO3) (2), and CsMoO3(IO3) (3), have been prepared through the hydrothermal reactions of MoO3 with AIO4 (A = K, Rb, or Cs) at 180 C. These compounds are isolated as nearly colorless, air-stable crystals. Single-crystal X-ray diffraction experiments reveal that 1 poss…
Whenever a curved surface interacts with another surface, the principles of adhesion are at work. From the cells in your body to the dust on your glasses, intermolecular forces cause materials to attract one another. Elastic deformations resulting from these adhesive interactions store strain that can be liberated dur…
The hydrosilylation polymerization of aliphatic ω-dimethylsilyloxy ketones is catalyzed by activated dihydridocarbonyltris(triphenylphosphine)ruthenium ( Ru ) to yield unsymmetrical poly(silyl ether)s. Likewise, Ru catalyzes the copolymerization of aliphatic α,ω-diketones with α,ω-dihydridooligodimethylsiloxanes to yi…
Temperature-programmed decarbonylation processes of Mo(CO) 6 entrapped in NaY and HY zeolites were investigated in situ by the time-resolved energy-dispersive X-ray absorption fine structure (DXAFS) technique. The DXAFS study revealed that the decarbonylation of Mo(CO) 6 in both NaY and HY proceeded through molybdenum…
Epitaxial thin films of RMnO3 (R = Sm, Eu, Gd, Dy) have been prepared using liquid injection MOCVD. The formation of a high-temperature hexagonal modification for DyMnO3 and bulk hexagonal EuMnO3 and GdMnO3, which does not exist for the bulk compounds, has been observed on ZrO2(Y2O3) (111) substrates at 900 °C due to…
ADVERTISEMENT RETURN TO ISSUEPREVNoteCrystallization-Induced Deformation of Spherical Microdomains in Block Copolymer Blends Consisting of a Soft Amorphous PhaseHsin-Lung Chen, Hsiu-Chun Li, Yen-Yu Huang, and Fang-Chyou ChiuView Author Information Department of Chemical Engineering, National Tsing Hua University, Hsin…
The tris-bidentate ligand 1,3,5-tris(5'-tert-butyl-3',4'-dihydroxyphenyl)benzene ((TBCat)(3)Ph) was synthesized. The reaction of this molecule in basic solution with two paramagnetic acceptors, i.e., a nickel(II)minus signtetraazamacrocyclic ligand complex (Ni(CTH)) (CTH = dl-5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraaz…
The effect of acetylation of potato starch on swelling, enzymatic degradation, and bovine serum albumin (BSA, molecular mass 68 kDa) release rate from polymer films was studied. Potato starch and potato starch acetates (SA), having a degree of substitution of 1.9 or 2.6, were investigated. Polymer films were incubated…
This paper addresses the problem of determining the electrostatic potential of large proteins by the superposition of potentials calculated for small fragments. The use of different atomic and molecular fragments is considered for reproducing the molecular electrostatic potential of different conformations of N-acetyl…