Materials Literature
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The high gravity technique is a strongly intensified process used for rapid mass and heat transfer, which has rarely been applied for the construction of layer-by-layer (LbL) self-assembled films. Herein, we used a poly(acrylic acid) (PAA)/poly(allylamine hydrochloride)–porphine complex (PAH–Por) multilayer to investi…
The synthesis and electrochemical properties of four electropolymerizable monomers featuring an interior aromatic diamide or diimide segment bridged by p ‐phenylene units to terminal electroactive carbazole groups are described. Upon electrochemical oxidation, the coupling reactions between carbazole radical cations o…
Biodegradable polyesters poly‐ l ‐lactide (PLA) and poly(butylene adipate‐co‐terephthalate) (PBAT) were reinforced with varying amount of date seed powder (DSP) with an aim to utilize the date seed waste as well as to achieve composites with improved properties. The PLA composites exhibited increase in the elastic res…
Pluronic® F127-modified water-dispersible poly(acrylic acid)-bound iron oxide (PF127-PAAIO) nanoparticles have been prepared as diagnostic agents. A blood–brain-barrier penetrating peptide, angiopep-2 (ANG), was further conjugated onto the surface of the PF127-PAAIO (ANG-PF127-PAAIO) for brain targeting. The ANG-PF127…
In this paper, we present results concerning ab initio calculations of the optical properties of group IV two-dimensional sheets and compare them with the prediction of an analytical model for excitons in two dimensions, which we explicitly derive. This comparison helps to understand the physics at the basis of the st…
An extensive series of new LnRuO3 perovskites has been synthesized at high pressure. These ruthenium(III)-based oxides are ruthenium deficient, and high-pressure samples have compositions close to LnRu(0.9)O3. These phases stabilize ruthenium(III) which is very unusual in oxides. X-ray and neutron powder diffraction s…
Cellulose acetate (CA) was successfully synthesized by the acetylation of TCF cellulose pulp from oil palm empty fruit bunches (OPEFB) at room temperature, using acetic anhydride as the acetylating agent and acetic acid as the solvent in the presence of sulfuric acid/sodium bisulfate as catalysts. Degree of substituti…
Non-photochemical laser-induced nucleation (NPLIN) has been a growing field of study since 1996, and more than 40 compounds including organics, inorganics and proteins have now been probed under various conditions (solvents, laser types, laser beams etc. ). The potential advantages of using this technique are signific…
Current methods to produce silk films include casting and spin coating. Here we introduce a new method for the fabrication of silk films: electrogelation. Through use of a closed-loop anode, films with high surface smoothness and optical transparency are produced. Bending the electrode loop allows films with three-dim…
Germanium telluride (GeTe) films have been recently demonstrated as the active element in low-loss RF switches where a 7.3 THz cut-off frequency (Fco) was achieved. In order to simultaneously realize the low ON-state transmission loss and large OFF-state isolation required for this application, significant optimizatio…
We report the synthesis of branched gold nanoshells (BGNS) through a seeded-growth surfactant-less method. This was achieved by decorating chitosan-Pluronic F127 stabilized poly(lactic-co-gycolic) acid nanoparticles (NPs) with Au seeds (NP-seed), using chitosan as an electrostatic self-assembling agent. Branched shell…
Abstract New diazocines as photochromic switches for the surface functionalization via the “platform approach” were synthesized and characterized. Symmetric diazocines as well as asymmetric molecules based on an indane scaffold were obtained and their photochromic properties were investigated. In a final step, the dia…
In this work, we demonstrate the growth of atomically smooth few-layer hexagonal boron nitride (h-BN) on sapphire substrates by metal organic chemical vapor deposition using triethylboron (TEB) and NH 3 as precursors. Changing the V/III ratio in a certain temperature and pressure range was found to change the growth m…
Photocatalytic systems often suffer from poor quantum yields due to fast charge recombination: The energy-wasting annihilation of the photochemically created charge-separated state. In this report, we show that the efficiency of photoinduced electron transfer from a sacrificial electron donor to positively charged met…
This work presents a techno-economic analysis of two modelled microcrystalline cellulose (MCC) production facilities, a stand-alone mill, and a mill integrated into a chemical pulp mill, with annual production levels of 30,000 tons/year. These results indicate that both options can be very profitable when the return o…
Dry spun carbon nanotube yarns made from vertically aligned multiwalled carbon nanotube forests possess high mechanical strength and behave like semiconductors with electrical conductivity of the order of 4 × 10(4) S m(-1). Coating a submicron-thick film of silver particle-filled polymer on the surface increased the e…
InfraRed (IR) sensor systems like night vision goggles, missile approach warning systems and telescopes have an increasing interest in decreasing their size and weight. At the same time optical aberrations are always more difficult to optimize with larger Focal Plane Arrays (FPAs) and larger field of view. Both challe…
Abstract Definierte molekulare Modelle für katalyserelevante Oberflächenreaktionen an Hume‐Rothery‐Nanophasen sind sehr selten. Der intermetalloide Al‐Cu‐Cluster [(Cp*AlCu) 6 H 4 ] wird selektiv bei der Reaktion von [(Cp*Al) 4 ] und [(PPh 3 CuH) 6 ] gebildet. Die höhere Affinität von Cp*Al zu Kupfer ermöglicht die Sub…
—During transformation of the power frequency currents, inductive current transformers are characterized by the values of current errors and phase displacement, which determine their accuracy class. However, current transformers catalogues do not specify these metrological parameters of transformation for the sinusoid…
Abstract Both positively and negatively charged polyhedral oligomeric silsesquioxane (POSS) electrolytes were observed to self‐assemble into blackberry‐type supramolecular structures in water/acetone mixed solvents, driven by the counterion‐mediated attraction. Laser light‐scattering studies reveal that the sizes of t…