Materials Literature
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The growth kinetics of CdSe nanocrystals nucleated from TOPSe and cadmium oleate were investigated in octadecene, a non-coordinating solvent. The effects of temperature and the oleic acid concentration on the kinetics of both nucleation and particle growth were investigated. It was found that increasing oleic acid con…
Novel organic solar cells have been prepared using quaternary self-organization of porphyrin (donor) and fullerene (acceptor) units by clusterization with gold nanoparticles on nanostructured SnO2 electrodes. First, porphyrin-alkanethiolate monolayer-protected gold nanoparticles (H2PCnMPC: n is the number of methylene…
The iterative algorithm of Feldman for heat flow in layered structures is solved in cylindrical coordinates for surface heating and temperature measurement by Gaussian-shaped laser beams. This solution for the frequency-domain temperature response is then used to model the lock-in amplifier signals acquired in time-do…
From the steady-state creep rate data treated as a function of the applied and the measured effective stress and temperature, a phenomenological dependence of the internal stress on the applied stress and temperature was derived. The result determined the expected character of the applied stress- and temperature depen…
We present a Taylor-based theory of deformation of an aggregate of rigid-plastic crystals that allows for heterogeneity of grain deformation, and use it to model macroscopic subdivision of grains into mutually misoriented volumes, a process termed deformation banding. Each grain is assumed to accommodate the macroscop…
An explanation is put forward for the early findings of Zeller and Pohl (, Phys. Rev. B, 4, 2029) and, in particular, Stephens (, Phys. Rev. B, 13, 852), and then for the more comprehensive recent findings of Meißner and Strehlow () for the anomalous magnetic-field-dependent behaviour of the heat capacity of some mult…
Magnetic measurements of the quasi 1-D molecular magnet formed by the coordination polymer of purely organic α-nitronyl nitroxide radical and manganese(II) ions, namely [( R )-3MLNN−Mn(hfac) 2 ], have been carried out under pressure up to 10 kbar at low temperatures. The results obtained show that the temperature of 3…
We have carried out extensive equilibrium molecular dynamics simulations to study the structure and the interfacial properties in the liquid-vapor phase coexistence of partially miscible binary Lennard-Jones mixtures. By analyzing the structural properties as a function of the miscibility parameter, alpha, we found th…
The crystal structure of [d(CGCAAATTTGCG)]2 has been determined to 1.5 A resolution, representing the first high-resolution structure of this DNA fragment. The ion interactions are novel. A spermine molecule replaces a Mg2+ observed in analogous structures. Unlike lower-resolution structures, the minor groove is narro…
Spin probe water solutions were adsorbed onto differently treated micelle-templated silicas (MTS) of different pore sizes to analyze the hosting ability of the MTS surface toward different organic molecules. The MTS synthesis was performed at 388 K by self-assembly of inorganic silica and micelles of cetyltrimethylamm…
The effect of the grain-shape (‘morphological’) texture of a polycrystal on the mechanical elastic constants and diffraction (X-ray) stress factors is investigated. To this end, the Eshelby–Kröner grain interaction model originally devised for polycrystals consisting of spherical grains is extended to ellipsoidal grai…
The electron spin dynamics associated with the photoinduced intramolecular electron transfer (ET) in a covalently linked malonate-strapped zinc porphyrin−fullerene (ZnP−C 60 ) dyad with “parachute” geometry was studied by time-resolved electron paramagnetic resonance (TREPR) spectroscopy. Studies were carried out in w…
The present authors have recently reported the atomic structure of ⟨011⟩ type II twin in NiTi shape memory alloy. In the present research, the atomic structure of ⟨011⟩ type II twin is further studied by using HRTEM in combination with atomic image simulation. Based on the model of type II twin constructed, the simula…
A low-temperature grafting approach using two Cu I molecular precursors ([CuOSi(O t Bu) 3 ] 4 and [CuO t Bu] 4 ) and a high-temperature exchange reaction using CuCl were utilized with a mesoporous silica support (SBA-15) to investigate the effects of catalyst preparation on the nature of copper−support interactions an…
We calculate the concentration-concentration partial structure factor ${S}_{\mathrm{CC}}(k)$ and the charge-charge structure factor ${S}_{\mathrm{zz}}(k)$ of liquid $\mathrm{Si}{\mathrm{O}}_{2}$, amorphous $\mathrm{Si}{\mathrm{Se}}_{2}$ and liquid $\mathrm{Ge}{\mathrm{Se}}_{2}$ using first-principles molecular dynamic…
We use a diarylethene with solution-stable open and closed forms (1,2-bis(2-methylbenzo[ b ]thiophen-3-yl) hexafluorocyclopentene), BTF6, as a photochromic energy transfer quencher of the metal-to-ligand charge-transfer (MLCT) based luminescence in [Ru(dpp) 3 ] 2+, dpp = 4,7-diphenyl-1,10-phenanthroline. As only the c…
The basic structure of alpha-LiFeO2, lithium iron oxide, is a cubic NaCl-type structure with a lattice constant of 0.42 nm; some short-range ordering characterized by octahedral clusters exists. The local structure of the short-range ordering was investigated by transmission electron microscopy and electron diffractio…
Using atom-transfer radical polymerization, we have prepared core−shell particles by grafting thermally sensitive poly( N -isopropylacrylamide) (PNIPAM) chains on a spherical polystyrene latex core (with a radius of ∼287 nm) via the “grafting-from” approach. As the temperature increases from 25 °C to 35 °C, the PNIPAM…
The DD4 mRNA of the penaeid prawn Penaeus japonicus was shown previously to be expressed in the epidermis adjacent to the exoskeleton specifically during the post-moult period, when calcification of the exoskeleton took place. The encoded protein possessed a Ca2+-binding site, suggesting its involvement in the calcifi…
A molybdenum chloromethoxide was prepared by reaction of MoCl 5 with methanol. By water addition, a sol was obtained that was stable on a month time scale. The sols were characterized by UV−vis and Raman spectroscopy, showing that upon water addition hydrolysis takes place but without extensive condensation, explainin…