Materials Literature
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Abstract The oxalic amidine N , N′ ‐dimethyl‐ N , N′ ‐diphenyl‐1,2‐bis[4‐tolylimino]ethane‐1,2‐diamine was used to synthesise a chloridozinc complex and two monoprotonated species either with chloride or triflate counterions. The compounds have been structurally characterised by X‐ray crystallography. Proton affinitie…
Silicon nanotip arrays exhibit a wide variety of interesting optical and electronic properties associated with their dimensionality. We here investigate the effect of size‐induced changes on phonon localization and explain the enhanced Raman response. The occurrence of normally forbidden transitions in the photolumine…
Since the term “spintronics” was conceived in 1996, there have been several directions taken to develop new semiconductor-based magnetic materials for device applications using spin, or spin and charge, as the operational paradigm. Anticipating their integration into mature semiconductor technologies, one direction is…
The screened hybrid approximation (HSE) of density functional theory (DFT) is used to examine the structural, optical, and electronic properties of the high temperature phase, cubic UC(2). This phase contains C(2) units with a computed C-C distance of 1.443 Å which is in the range of a CC double bond; U is formally 4+…
The composite of multiwalled carbon nanotubes (MWCNTs) decorated with ZrO(2) nanoparticles, synthesized by a grafting method followed by high-temperature annealing, was studied. The oxygen functionalized MWCNT surface uniformly disperses and stabilizes the oxide nanoparticles to an extent that is controlled by the met…
Side group exchange reactions have been studied for linear high polymeric organophosphazenes, [N═P(OR 2 )] n ( n ∼ 15 000). Specifically, the exchange behavior of polymers was examined where OR = OCH 2 CF 3, OCH 2 CF 2 CF 2 CF 2 CF 2 H, OCH 2 Cl 3, OC 6 H 4 CHO- p, OC 6 H 4 CN- p, and OC 6 H 4 NO 2 - p with sodium tri…
Photocatalytic soot oxidation is studied on P25 TiO(2) as an important model reaction for self-cleaning processes by means of electron paramagnetic resonance (EPR) and Fourier transform infrared (FTIR) spectroscopy. Contacting of carbon black with P25 leads on the one hand to a reduction of the local dioxygen concentr…
BACKGROUND: Rapid increase in multi-walled carbon nanotube (MWCNT) production for their industrial and biomedical applications has led to concerns over the effects of MWCNTs on human health and the environment. Both animal and in vitro studies have provided important findings about MWCNT-induced effects on the lung ce…
The radii R of the area wetted by precursor films spreading from small droplets of polymer liquids are found to vary as R ~ t(ν) with ν = 0.31-0.42, in contradiction to the 0.5 exponent indicated in previous studies. The experiments reported here are for three of the same polymer liquids used in the previous studies-m…
In this work, we studied ac responses of T-stub structures that are composed of armchair and zigzag graphene ribbons. Compared with uniform graphene ribbons, the T-stub structures show extraordinary properties. The ac responses of armchair and zigzag T-stub structures show different behaviors for different edge config…
Graphene is a carbon sheet one atom thick, consisting of a two-dimensional honeycomb lattice, which is considered to be the thinnest material in the world.1,2 It is generally viewed as the basic unit for other carbon materials. Figure 1.1 shows that graphene can become 3D graphite, 1D carbon nanotub...
A theoretical study of ion vacancy migration properties in hydroxylated oxide film (passive film) formed on Cr surface has been carried out based on density functional theory (DFT). The ion vacancy migration involves a rather complex regime, which includes inner-Cr 2 O 3, outer-Cr(OH) 3 layers, and also the Cr/Cr 2 O…
The synthesis and structure-activity relationships of a homologous series of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid gadolinium(III) complexes bearing thiol-terminated alkyl side chains from three to nine carbons in length are reported. The observed binding with human serum albumin (HSA) of the compou…
The design of highly efficient fused silica transmission gratings with deep-etched triangular-shaped grooves in the -1st order diffraction is realized by the rigorous coupled wave analysis (RCWA). The antireflective effect of a subwavelength triangular-groove grating with gradient effective refractive index results in…
The design of electrode interfaces has a strong impact on cell-based bioelectronic applications. We present a new type of microelectrode array chip featuring a nanoporous alumina interface. The chip is fabricated in a combination of top-down and bottom-up processes using state-of-the-art clean room technology and self…
A simple and versatile approach is proposed to use cross-linked polypeptide hydrogels as templates for silica mineralization, allowing the synthesis of polypeptide-silica hybrid hydrogels and mesoporous silica (meso-SiO(2)) by subsequent calcination. The experimental data revealed that the cross-linked polypeptide hyd…
We present molecular dynamics (MD) simulations results for dense fluids of ultrasoft, fully penetrable particles. These are a binary mixture and a polydisperse system of particles interacting via the generalized exponential model, which is known to yield cluster crystal phases for the corresponding monodisperse system…
Lanthanide-binding tags (LBTs), peptide-based coexpression tags with high affinity for lanthanide ions, have previously been applied as luminescent probes to provide phasing for structure determination in X-ray crystallography and to provide restraints for structural refinement and distance information in NMR. The nat…
Cooperation is the name of the game: The first example of a chiral phthalocyanine dimer with well-defined supramolecular weight and symmetry formed through cooperative multiple π-π interactions among nine pairs of aromatic moieties between two chiral phthalocyaninato zinc molecules has been clarified (see figure).
A water-soluble, mitochondria-permeable erbium(III) complex has been designed as a responsive bi-functional probe. This may be used to induce the mild formation of singlet oxygen (ΦΔ = 0.10) and causes local damage in cellulo when exposed to UV and near-infrared laser excitation.