Materials Literature
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A new nano‐dimensional material, layered double hydroxide – montmorillonite (LDH‐MMT), has been synthesized by the formation of an LDH in the presence of MMT. The structure is studied using X‐ray diffraction, Fourier transform infrared, scanning electron microscopy, and energy‐dispersive X‐ray spectroscopy analysis. T…
Abstract Epitaxial silicon solar cells (“epicells”) are based on an epitaxial active layer (“epilayer”) grown on top of a low‐cost, inactive p + silicon substrate. A key challenge is to mitigate transition metal out‐diffusion from the low‐purity substrate into the active layer. An embedded porous silicon (PSi) layer c…
Results of a study combining anion photoelectron spectroscopy and density functional theory calculations on the heteronuclear MoNbO(y)(-) (y = 2-5) transition metal suboxide cluster series are reported and analyzed. The photoelectron spectra, which exhibit broad electronic bands with partially resolved vibrational str…
The formation of object complexes between Janus nanosheets and cross-linked polystyrene (PS) microspheres is reported. Sheets with one side tethered with PS chains and the other with poly(2-vinyl pyridine) made from triblock terpolymers were confirmed to be foldable by the addition of acidic water to their dispersion…
The influence of edge roughness in angle-resolved scatterometry at periodically structured surfaces is investigated. A good description of the radiation interaction with structured surfaces is crucial for the understanding of optical imaging processes such as, e.g., in photolithography. We compared an analytical two-d…
A series of bis-amides derived from L-(+)-tartaric acid was synthesized as potential low-molecular-weight gelators. Out of 14 bis-amides synthesized, 13 displayed organo-, hydro-, and ambidextrous gelation behavior. The gels were characterized by methods including circular dichroism, differential scanning calorimetry,…
The functionalization of textile fibers with intrinsically conductive polymers has become a prominent research area throughout the world. A number of coating techniques have already been utilized and optimized to get the uniform layers of conductive polymers on the surface of different substrates. In our previous stud…
We describe the modes of a Fabry–Perot cavity made of two-dimensional photonic crystal guided-mode resonance mirrors (Si3N4/air), and compare it with an ideal Fabry–Perot cavity and a cavity made of Bragg mirrors. As the evolution of modes is analyzed, a lower tuning efficiency and a larger tuning range…
Although peptide amphiphiles have been explored as nanomaterials for different applications, nanostructures formed by hierarchical molecular assembly of sequence-specific peptidomimetics are much less developed. Such protein-like nanomaterials could enhance the current application of peptide-based amphiphiles by enric…
Abstract Heparin was covalently bonded on chemically inert PET substrate using a surface modification technique–surface interpenetrating network with the purpose of fabricating long‐lasting biocompatible materials as vascular grafts. FTIR and XPS spectra confirmed the successful heparinization of PET (PET‐Hep). The de…
Novel sandwich-type phthalocyanines containing a rare earth metal core (Pr, Nd, Eu-Lu) and macrocycles peripherally substituted by pentadecylphenoxy groups were synthesized using a cardanol-based phthalonitrile precursor and the respective lanthanide acetate. Additionally, the metal free-base analog compound was studi…
Microcrystalline and submicrometer powders of Zn(1-x)Cu(x)WO(4) (0 ≤ x ≤ 1) have been prepared by a solid-state synthesis from stoichiometric quantities of the constituent d-block metal oxide and tungsten oxide as well as from a Pechini sol-gel synthesis starting from the d-block metal nitrate and ammonium metatungsta…
Photoinduced charge transfer in a double-linked zinc porphyrin-fullerene dyad is studied. When the dyad is excited at the absorption band of the charge-transfer complex (780 nm), an intramolecular exciplex is formed, followed by the complete charge separated (CCS) state. By analyzing the results obtained from time-res…
Abstract We report the fabrication of vertically aligned single‐walled carbon nanotube (VA‐SWCNT) electrodes for a symmetric electrochemical capacitor using a simple, low‐cost ethanol‐based SWCNT growth system. From the CNT direct growth technique, the electrode was easily prepared and consequently assembled with an e…
We present electron spin resonance (ESR) measurements in single-crystalline samples of EuIn${}_{2}$As${}_{2}$ grown using the In-flux method. This compound crystallizes in a hexagonal P6(3)/$mmc$ structure and presents antiferromagnetic (AFM) ordering below ${T}_{N}=16$ K. In the paramagnetic state, a single Eu${}^{2+…
Hexagonale Magnesium-Nanokristallplättchen (MgNCs) wurden in einem porösen Metall-organischen Gerüst (MOF, siehe Bild) erzeugt. Das MgNC@MOF-Komposit speichert Wasserstoff durch Physi- und Chemisorption; dabei setzt es die isostere Wärme der H2-Physisorption sowie die H2-Chemisorptions-/Desorptions-Temperaturen deutli…
We report that poly(L-lysine)-graft-poly(ethylene glycol) (PLL-g-PEG) copolymers that bear multiple thiol groups on the polymer backbone are exceptional ligands for gold nanoparticles (AuNPs). In general, these graft copolymer ligands stabilize AuNPs against environments that would ordinarily lead to particle aggregat…
The decarbonization process for silicone resin particles in a hydrogen gas flow and the properties of resulting Si – O – C (– H ) ceramics were investigated in terms of mass loss, specific surface areas, and photoluminescence ( PL ) spectra. In particular, PL spectra of Si–O–C(–H) ceramics decarbonized in a hydrogen g…
This study analyzed the properties of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) thin-films prepared by spin-coating solutions made with the polar solvents methanol, acetone, or N,N-dimethylformamide (DMF). A characteristic analysis was carried out for poly(3-hexylthiophene) (P3HT) and [6…
Addition of orthophosphate has been commonly employed to suppress lead levels in drinking water. Its detailed mechanism and time required for it to become effective, however, have not been fully elucidated. In this study, we investigated the mechanistic role of orthophosphate as a corrosion inhibitor in controlling le…