Materials Literature
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The application of two recently developed protocols for the fast and robust determination of nucleation and growth kinetics to the antisolvent precipitation of PDI 747 is presented in this work. Both characterization methods are based on two in situ process analytical technologies, i.e., attentuated total reflection-F…
Optical metamaterial consisting of metal-dielectric composites creates a complicated system that is not amenable to analytical solutions. This presents a challenge in optimizing these intricate systems. We present the application of three nature-inspired stochastic optimization techniques in conjunction with fast nume…
The tripodal hexadentate picolinate ligand dpaa3- (H3dpaa=N,N'-bis[(6-carboxypyridin-2-yl)methyl]glycine) has been synthesised. It can form 1:1 and 1:2 lanthanide/ligand complexes. The crystal structure of the bis(aquo) lutetium complex [Lu(dpaa)(H2O)2] has been determined by X-ray diffraction studies. The number of w…
Abstract An ongoing challenge in polymer science is the preparation of materials with bespoke surface properties which differ from that of the bulk, for example hydrophobicity, wettability, chemical resistance, adhesion or biocompatibility. We highlight here recent efforts in the design, development and application of…
A new scheme for decomposing the total dipole moment and polarizability of a system into site-specific contributions is presented. The scheme is based on partitioning the system volume into cells associated with its atoms or groups of atoms. The site-specific dipole moments and polarizabilities are computed from the c…
Abstract The application of interference microscopy has provided an important breakthrough in the study of the transport of guest molecules in nanoporous materials, making it possible to observe the transient intracrystalline concentration profiles resulting from a well‐defined change (usually a step) in the ambient g…
Eine „Klick“-Reaktion – die Cycloaddition von Tetracyanethylen (TCNE) an elektronenreiche Alkine – mit anschließender Retro-Elektrocyclisierung liefert multivalente Charge-Transfer-Chromophore, die bis zu 24 Elektronen aufnehmen. Eine Kaskadenaddition von TCNE und Tetrathiafulvalen (TTF) an Polyine führt zu konjugiert…
This paper discusses the actuation durability of a conducting shape memory polyurethane (CSMPU) actuator. Introduced in 2004, the CSMPU actuator was manufactured by an in situ polymerization method for shape memory polyurethane with multi-walled carbon nanotubes. In order to apply the CSMPU to smart actuators and dete…
Chemical architectures supporting a high degree of electronic conjugation serve as important functional components in devices and materials for advanced electronic and photonic applications. Increasing the spatial dimensionality of such constructs can fundamentally modify their optoelectronic properties and significan…
Abstract Low pressure glow discharge nitrogen plasma has been used to improve wettability in a low density polyethylene (LDPE) film for technical applications. The plasma treatment was carried out at a power of 300 W for different exposure times in the 1–20 min range. Wettability changes were analyzed using contact an…
An experimental system of a four-pad 3 omega-method with noise cancellation circuit was designed to measure simultaneously thermal conductivity, thermal diffusivity and heat capacity of an individually suspended wire. The closed solution of temperature oscillation, in which the heat transport in the wire is modelled a…
The effect of pH and composition of sulfuric–oxalic acid mixture on the self-ordering configuration of high porosity alumina nanohole arrays, Kashi, M Almasi, Ramazani, A, Rahmandoust, M, Noormohammadi, M
Water dispersible ZnS:Mn nanocrystals were synthesized by capping the surface of the nanocrystals with four kinds of aminoacids ligands: arginine, cystein, histidine, and methionine. The aminoacids capped ZnS:Mn nanocrystal powders were characterized by XRD, HR-TEM, EDXS, and FT-IR spectroscopy. The optical properties…
We report on a study of thermodynamic functions and phase stability of lithium alanates $\mathrm{Li}\mathrm{Al}{\mathrm{H}}_{4}$ and ${\mathrm{Li}}_{3}\mathrm{Al}{\mathrm{H}}_{6}$ using ab initio density-functional and quasiharmonic phonon calculations. The calculated thermodynamic functions are in good agreement with…
Abstract The composites of poly(ε‐caprolactone) (PCL) and graphite oxide (GO) were successfully synthesized by ring‐opening polymerization of ε‐caprolactone with GO as the initiator. The composites with different GO content were synthesized and an exfoliated structure was found for all the composites from the wide ang…
The magnetic properties of nanocrystalline manganites La 1− x MnO 3+δ with particle size of 20 (LMO20), 25 (LMO25), and 30 nm (LMO30), prepared by the citrate method, have been investigated in the temperature range 5–320 K, magnetic field up to 90 kOe and under quasi-hydrostatic pressures up to 14.5 kbar. The studies…
Ab initio total energy calculations using the plane-wave pseudopotential method based on density functional theory were carried out to investigate the structural, energetic and electronic properties of A 2 Ti 2 O 7 (A = La, Gd and Yb) pyrochlores. It turned out that the formation energies of antisite defects are not l…
Rates of steady oxygen-isotope exchange differ in interesting ways for two sets of structural oxygens in the [HxTa6O19](8-x)-(aq) Lindqvist ion when compared to published data on the [HxNb6O19]8-x(aq) version. Because of the lanthanide contraction, the [HxTa6O19](8-x)-(aq) and [HxNb6O19](8-x)-(aq) ions are virtually i…
Abstract This feature article highlights three types of hyperbranched fluoropolymers (HBFPs) with different structural features, which were synthesized by either polycondensation of fluorinated AB x monomers or self‐condensing vinyl (co)polymerization of fluorinated inimers and/or fluorinated comonomers. Amphiphilic c…
Abstract A novel method of macromolecule encapsulation using micron‐sized polymeric shells constructed with a photoactive azobenzene containing polyelectrolyte is discussed. Fluorescently labeled dextran molecules were encapsulated using light to remotely shrink and change the wall permeability of new polymeric hollow…