Materials Literature
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Our goal is to develop the functionalized superparamagnetic iron oxide nanoparticles (SPIONs) demonstrating the capacities to be delivered in liver specifically and to be dispersed in physiological environment stably. For this purpose, SPIONs were coated with polyvinylbenzyl-O-beta-D-galactopyranosyl-D-gluconamide (PV…
This paper presents methodology developed for the computational modeling and design of negative refractive index materials (NIMs) based on molecular chirality. An application of the methodology is illustrated by ab initio computations on two organometallic molecules which constitute the monomer units of a chiral polym…
In this paper we present and investigate a stochastic model and its associated Fokker–Planck equation for the lay-down of fibers on a conveyor belt in the production process of nonwoven materials. The model is based on a stochastic differential equation taking into account the motion of the fiber under the influence o…
Alginate (ALG) hydrogels incorporating vascular endothelial growth factor (VEGF) were nano-coated with polyelectrolyte multilayer (PEM) films composed of chitosan (CT) and dextran sulfate (DEX) in order to control the VEGF release from the hydrogels. When non- and nano-coated ALG hydrogels containing VEGF were incubat…
We present physical and electrical evidence of the Thomson thermo-electric effect in line-type phase-change memory cells. This causes a shift of the molten zone during RESET programming towards the anode contact, and as a consequence the phase change material (PCM) design at the contact area has a significant influenc…
Emerging host-guest chemistry of synthetic nanotubes is reviewed, including the preparation of their encapsulation complexes, guest dynamics, exchange and potential applications.
Polycrystalline Si photovoltaic cells were coated with photoluminescent phosphors to increase the power conversion efficiency by down-conversion of high energy ultraviolet photons to less energetic visible photons, for which the Si solar cell conversion efficiency is greater. Phosphor coatings consisting of Y2O3:Eu3+,…
The authors report the simple and easy method to fabricate transition-metal–carbon nanotube hybrid materials through nitrogen mediation. Ni nanoparticles were uniformly dispersed on carbon nanotubes without any pretreatment such as defect activation by strong acids or covalent functionalization processes. A theoretica…
The repeated introduction of an a-dione unit and its reaction with an arene-1,2-diamine allows the stepwise annulation of all four pyrrolic rings of a porphyrin, as is demonstrated by the synthesis of a trisquinoxalinoporphyrin, a tetrakisquinoxalinoporphyrin and the more elaborated bisporphyrin.
With the introduction of nanoscale in situ imaging technologies, a new understanding of the microscopic processes that underlie widely used empirical ‘rate laws’ is emerging. This review summarizes recent findings that the kinetics of mineral dissolution can be explained by equivalent, but inverse, microscopic process…
The synthesis of new soluble conjugated metallopolymers 4a–c and 5a–c containing Zn, Ni and Cu salphen derivatives is reported. The structures of the high molecular weight polymers are confirmed by NMR, IR, UV-vis, and fluorescence spectroscopic studies. Zinc-containing metallopolymer 4a exhibits strong aggregation be…
Ultra low-k (ULK, k=2.4) dielectric has weaker mechanical properties than first generation low-k films (k=3.0). The introduction of ULK into advanced back end of lines (BEOL) presents a significant challenge due to chip package interaction (CPI) where the packaged die is cycled over a temperature range and the resulti…
Chiral calix[4]arenes bearing long tertiary alkyl groups at the upper rim and S-1-phenylethylamine groups at the lower rim can form heat-set gels and egg-like vesicles enantioselectively with d-2,3-dibenzoyltartaric acid in cyclohexane, which is the first example of heat-set gels resulting from difference in interacti…
The aim of this study was to evaluate the energy consumption, in general, for ring type yarn manufacturing systems and to examine the energy consumption in a chosen spinning mill by considering the available data including installed power, monthly and yearly energy usage. A simple theoretical approach for predicting t…
The main goal of the method proposed in this paper is the numerical study of various kinds of anisotropic gratings deposited on isotropic substrates, without any constraint upon the diffractive pattern geometry or electromagnetic properties. To that end we propose a new FEM (Finite Element Method) formulation which ri…
We describe a novel experimental technique for measuring the viscoelastic properties of ultrathin polymer films. The method is based on the classic bubble inflation technique for measuring the biaxial creep compliance of films, reduced in size to measure films with thicknesses down to at least 13 nm. The method uses t…
This review highlights the recent progress of electron-donating polymers containing thio-cyclic units (tetrathiafulvalene, dithiafulvene, thioketene dimers). These polymers with TTF derivatives in the main chain and side chain have been studied with the aim of improving processability of their charge transfer complexe…
DE-310 is composed of the topoisomerase-I inhibitor DX-8951 (exatecan) and carboxymethyldextran polyalcohol (CM-Dex-PA) carrier, which are covalently linked via peptidyl spacer (Gly-Gly-Phe-Gly). In this study, we investigated relationship between the cathepsin activity and the drug release of DE-310 by use of human l…
The introduction of CF(3) reporter groups close to the paramagnetic centre in macrocyclic lanthanide(iii) complexes allows faster acquisition of (19)F magnetic resonance data, and amplifies chemical shift non-equivalence, as exemplified by the definition of ratiometric chemical shift probes for pH and, in principle, e…
Chemical conversions within the cages of doped sol-gel porous oxides take place with unique advantages over reactions in solution as the glassy matrix has tremendous effects on the reactivity of the entrapped molecules. The chemical properties of sol-gel materials can be tailored in an immense range of values and chem…