Materials Literature
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Well-balanced: 19F NMR spectroscopy defined a trifluoromagnesate complex for protein kinase A (multicolored) with adenosine diphosphate (black), the MgF3− ion (green), and the SP20 peptide substrate (purple with dots). A sphere (cyan) centered on the MgF3− ion embraces all catalytic components and much of the SP20 sub…
Abstract We report on the dissolution of semi‐domestic silk type Antheraea assamensis using ionic liquids. We investigated the impact of different coagulating solvents, including isopropanol and water on the structure and the morphology of the regenerated silk. We found that the water regenerated silk film showed a hi…
New phosphate glasses in the quaternary system (50- x ) A 2 O- x WO 3 -10 Nb 2 O 5 -40 P 2 O 5 , with x = 0; 30 and A = Li or Na were prepared by the melt quenching method. The effect on the crystallization behaviour of the glass due to the introduction of WO 3 into the glass composition and, consequently, the diminis…
A one-step colloidal process was adopted to prepare face-centered-cubic PbS nanocrystals with different shapes such as octahedral, starlike, cubic, truncated octahedral, and truncated cubic. The features of this approach avoid the presynthesis of any organometallic precursor and the injection of a toxic phosphine agen…
Janus-MOF: Dünne Filme aus nicht-zentrosymmetrischen heterostrukturierten Metall-organischen Gerüsten (MOFs) wurden direkt auf QCM-Sensoren hergestellt (QCM=Quarzkristall-Mikrowaage). Abhängig von der räumlichen Anordnung der zwei Gerüste konnten die dünnen MOF-Filme die Affinität für Analyten steuern und so den QCM-S…
Stable antiaromatic expanded porphyrins were designed by the judicious implementation of meso-imidazolyl groups, which cause stabilization through the creation of a hydrogen-bonding network that overcomes antiaromatic electronic destabilization. Both the [28]hexaphyrin 1 and the [36]octaphyrin 2, which contain imidazo…
A new fluorinated version of a cyclic β-aminoalcohol gelator derived from 1,2,3,4-tetrahydroisoquinoline is presented. The gelator is able to gel various nonprotic solvents through OH⋅⋅⋅N hydrogen bonds and additional CH⋅⋅⋅F interactions due to the introduction of fluorine. A bimolecular lamellar structure is formed i…
A new family of hyperbranched polymeric ionic liquids ("hyperILs") with onion-like topology and facile polarity design were tailored as transporters and compartmentalized systems. Applications include transport and dispersion of water-soluble dyes and functionalized graphene nanosheets from aqueous phase into nonpolar…
Abstract Pristine graphene/polyvinyl alcohol (PVA) nanofibers were prepared by electrospinning an aqueous solution of polyvinylpyrrolidone‐stabilized graphene and PVA. This is the first report of electrospun nanofibers reinforced with dispersed pristine graphene. We examine the relationship between graphene loading an…
Auf- oder abwärts: Komplex strukturierte freistehende Polymerfilme mit einer dreidimensionalen molekularen Ordnung wurden durch Photoausrichtung polymerisierbarer Flüssigkristalle hergestellt. Die gebildeten Filme verformen sich beim Erhitzen zu Kegel- und Sattelformen.
After the health catastrophe resulting from the widespread use of asbestos which was once hailed as a new miracle material, the increasing use of carbon nanotubes (CNTs) has spawned major concern due to their similarities in terms of size, shape and poor solubility. Assessment of genotoxicity has shown that CNTs can d…
Please release me: Electrochemically activated cell release is achieved using a redox-active supramolecular complex (see picture). Host molecule CB[8] (green) links surface-bound viologen (purple) with solution-exposed RGD peptides (red). Electrochemical reduction dissociates the complex, releases the peptides, and th…
Employing the linear response Kubo formalism as implemented in a fully relativistic multiple-scattering Korringa-Kohn-Rostoker Green function method a systematic first-principles study based on density-functional theory (DFT) of the anomalous Hall conductivity (AHC) of the 3$d$-transition-metals Fe, Co and Ni is prese…
Highly symmetric gold nanoparticle clusters with coordination numbers up to seven were produced by using coating with block copolymers. The resulting clusters were separated by density gradient centrifugation and characterized by using SEM and optical spectroscopy (see picture).
Rise or fall: Complex-structured freestanding polymer films with molecular order in three dimensions were prepared through photoalignment of polymerizable liquid crystals. The resulting films deform into cone and saddle shapes upon heating.
Although the polymorphism of calcium carbonate is well known, and its polymorphs--calcite, aragonite, and vaterite--have been highly studied in the context of biomineralization, polyamorphism is a much more recently discovered phenomenon, and the existence of more than one amorphous phase of calcium carbonate in biomi…
Abstract This article presents a novel investigation on the Mo/Mg/Ni/O catalysts (Nmm‐cats) with which the noncharring polyolefins are basically transferred to the charring polymers under forced flaming conditions and the flame retardancy of polyolefins is improved dramatically. The results of model charring experimen…
Abstract In this article, the microencapsulated ammonium polyphosphate crystalline with form I (APP‐I) coated with melamine‐formaldehyde (MF) was prepared by in situ polymerization. Results of Fourier transform infrared spectra (FTIR), thermogravimetry (TG) energy dispersive spectroscopy (EDS), and scanning electron m…
The interaction of Sc(III), Y(III), and La(III) ions with 1,10-phenanthroline (Phen) has been investigated, using the potentiometric method at 25 and M KNO 3 . Collected potentiometric data were processed by the “BEST” software program to establish the complexation model for each system. SPE software program was used…
Abstract Multiwalled carbon nanotubes (MWCNTs)/acrylonitrile‐butadiene‐styrene (ABS) composites with unmodified and modified (COOH‐MWCNTs) CNTs were prepared using the melt blending method. The composites with 0, 1, and 1.5 phr MWCNTs (with and without modification) were analyzed by scanning electron microscopy and tr…