Developments in the Processing and Properties of NdFeB‐Type Permanent Magnets
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Liquid-crystalline metallophthalocyanines containing late first-row transition metals
Cobalt(II), nickel(II), copper(II) and zinc(II) phthalocyanines substituted by eight alkoxy chains in the peripheral (2,3,9,10,16,17,23,24) positions were prepared. The alkoxy chain lengths are octyloxy (C 8 H 17 O), dodecyloxy (C 12 H 25 O) and hexadecyloxy (C 16 H 33 O). Studies by polarized optical microscopy and h…
Diffusion-Corrected Simultaneous Multilayer Growth Model
A diffusion-corrected simultaneous multilayer (DCSM) model was developed, taking into account up-step and down-step diffusion of adatoms and enabling rapid identification of different film growth modes. This DCSM model was applied to the initial growth of Cr on (100) ${\mathrm{S}\mathrm{r}\mathrm{T}\mathrm{i}\mathrm{O…
Equation of State for Monolayers under Consideration of the Two-dimensional Compressibility in the Condensed State
The equation of state for Langmuir monolayers proposed earlier (Fainerman, V. B.; Vollhardt, D. J. Phys. Chem. B 1999, 103, 145.) is generalized for the case that one, two or more phase transitions in the monolayer take place, provided that the two-dimensional compressibility undergoes a jump at the phase transition,…
Heteroepitaxial Growth of Nanostructured Cerium Dioxide Thin Films by MOCVD on a (001) TiO2 Substrate
The deposition of epitaxial CeO 2 nanostructured thin films on rutile (TiO 2 ) substrates by metal−organic chemical vapor deposition (MOCVD) has been carried out in a wide temperature range. Films have been grown on (001)TiO 2 from the Ce(III) 1,1,1,5,5,5-hexafluoro-2,4-pentanedionato diglyme adduct (Ce(hfa) 3 ·diglym…
Polymer blends of poly(trimethylene terephthalate) and polystyrene compatibilized by styrene‐glycidyl methacrylate copolymers
Abstract The compatibilizing effects of styrene‐glycidyl methacrylate (SG) copolymers with various glycidyl methyacrylate (GMA) contents on immiscible blends of poly(trimethylene terephthalate) (PTT) and polystyrene (PS) were investigated using scanning electron microscopy (SEM), Fourier transform infrared spectroscop…
Analysis of the isothermal crystallization of isotactic polypropylene nucleated with sorbitol derivatives
Abstract The isothermal crystallization kinetics of isotactic polypropylene (iPP) and iPP nucleated with the sorbitol derivatives 1,3:2,4‐bis(4‐methyldibenzylidene)sorbitol and 1,3:2,4‐bis(3,4‐dimethylbenzylidene)sorbitol was studied, along with the subsequent melting behavior, as a function of the nucleating agent co…
Molecular design at the calamitic/discotic cross-over point. Mononuclear ortho-metallated mesogens based on the combination of rod-like phenylpyrimidines and -pyridines with bent or half-disc-shaped diketonatesElectronic supplementary information (ESI) available: procedures and analytical data for all compounds not described in the Experimental. See http://www.rsc.org/suppdata/jm/b2/b210250a/
Six novel series of mononuclear ortho-palladated and ortho-platinated metallomesogens have been obtained by combination of rod-like heteroaromatic liquid crystals with bent or half-disc-shaped 1,3-diketonate units. The synthesis of these molecules was achieved by ortho-metallation of rod-like 2-phenylpyrimidines and 2…
Morphology control of MnWO4 nanocrystals by a solvothermal route
A solvothermal route to MnWO4 nanoparticles and nanorods has been developed. These nano-size products have been characterized by X-ray diffraction and transmission electron microscopy. The pressure, pH and temperature of the reaction systems were found to play important roles in determining the morphologies of the MnW…
Synthesis and Spectroscopic Properties of Finite Ph2N-Containing Oligo(arylenevinylene) Derivatives That Emit Blue to Red Fluorescence
[structure: see text] A series of oligo(phenylenevinylene) (OPV) derivatives with finite conjugation units were prepared in short steps from few building blocks. The central and terminal aryl groups of these OPV dyes contain cyano and Ph(2)N substituents, respectively, which affect color of fluorescence. The wavelengt…
Simulating the morphology and mechanical properties of filled diblock copolymers
We couple a morphological study of a mixture of diblock copolymers and spherical nanoparticles with a micromechanical simulation to determine how the spatial distribution of the particles affects the mechanical behavior of the composite. The morphological studies are conducted through a hybrid technique, which combine…
A General Methodology for the Synthesis of Transition Metal Pnictide Nanoparticles from Pnictate Precursors and Its Application to Iron−Phosphorus Phases
Nanoparticles of iron phosphide have been prepared through a new strategy involving the reductive annealing of nanoparticulate iron phosphate precursors cast onto atomically flat mica surfaces. This route appears to be general for a range of transition metals and pnicogens and avoids the use of highly toxic and pyroph…
Infrared Spectra of BCO, B(CO)2, and OCBBCO in Solid Argon
The reactions of ground-state boron atoms with CO in solid argon have been reinvestigated. The BCO molecule was formed by codeposition of laser-ablated boron atoms with CO in argon. The ν 1, ν 2, ν 3, 2ν 1, 2ν 3, and ν 1 + ν 3 modes of isotopic BCO molecules have been measured. The linear dicarbonyl, B(CO) 2, and the…
Quantum Conductance Steps in Solutions of Multiwalled Carbon Nanotubes
We have prepared solutions of multiwalled carbon nanotubes in Aroclor 1254, a mixture of polychlorinated biphenyls. The solutions are stable at room temperature. Transport measurements were performed using a scanning-tunneling probe on a sample prepared by spin coating the solution on gold substrates. Conductance step…
Viscoelastic Scaling of Colloidal Gels in Polymer Solutions
The structure and formation of particulate silica networks in biopolymer solutions were studied using rheological measurements and diffusing wave spectroscopy (DWS). For samples with different volume fractions of silica, the frequency-dependent viscoelastic moduli can be scaled onto one master curve by shifting the da…
Thermal degradation studies on rigid polyurethane foams blown with pentane
Abstract The effect of sodium dihydrogenphosphate, trisodium pyrophosphate, and sodium aluminocarbonate on the thermal decomposition of rigid polyurethane (PUR) foams, based on diphenylmethane‐4,4‐diisocyanate, diphenyl‐2,2‐propane‐4,4‐dioxyoligo(ethylene oxide), and oxyalkylenated toluene‐2,6‐diamine, blown with pent…
Synthesis of Uniform CoTe and NiTe Semiconductor Nanocluster Wires through a Novel Coreduction Method
A novel coreduction method was developed to synthesize uniform one-dimensional CoTe and NiTe nanocluster wires. In the synthesis, soluble Na(2)TeO(3) was used to supply a highly reactive Te source and N(2)H(4).H(2)O was used both as reducing agent and as complexing agent. The as-prepared samples were characterized by…
Microscopic Approach to the Pseudo-Spin-1/2 Hamiltonian for Kramers Doublets in Exchange Coupled Co(II) Pairs
The microscopic theory of the magnetically anisotropic effective pseudo-spin-(1)/(2) Hamiltonian for a pair of Co(2+) ions is reported. In the framework of the second-order perturbation approach, the analytical expressions are found for the components of the tensor of the exchange interaction, g-tensor, and the factor…
Orbital Hybridization and Charge Transfer in Carbon Nanopeapods
We investigate the electronic structure of the fullerenes encapsulated inside carbon nanotubes, the so-called nanopeapods, using the first-principles study. The orbital hybridization of LUMO+1 (the state above the lowest unoccupied molecular orbital) of C60, rather than LUMO as previously proposed, with the nanotube s…
Proton Irradiation of Carbon Nanotubes
Single-walled carbon nanotubes (SWNTs) were irradiated with 1 MeV protons and the samples were analyzed using Fourier transform infrared spectroscopy, UV−vis−NIR spectroscopy, Raman spectroscopy, and secondary ion mass spectrometry. There is clear evidence that the irradiated sample contains C−H bonds.