Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract In this study, we found that amylose–poly(tetrahydrofuran) (PTHF) inclusion complexes were formed when a mixture of amylose with PTHF was stirred in 1-butyl-3-methylimidazolium chloride of an ionic liquid at high temperature under reduced pressure, followed by cooling and precipitation by addition of methanol.
„Mauer“-Mikrostrukturen von künstlichen Chitosan-Montmorillonit(MTM)-Bionanokompositfilmen lassen sich leicht aus Chitosan-MTM-Hybridnanoblättern herstellen (siehe Bild). Die feuerhemmenden Perlmutt-artigen Filme verfügen über eine höhere mechanische Leistungsfähigkeit (Young-Modul: 10 GPa, Zugfestigkeit: 100 MPa) als…
Graphene nanoribbons (GNRs) have many applications in electronics due to their exceptional mechanical, electronic and thermal properties. In order to utilize GNRs for stretchable electronics, it is an important issue to enhance the stretchability of GNRs. In this work, we report that the stretchability of GNRs can be…
Monodisperse silica core-shell particles with a high surface area and large pore size were rapidly prepared via a multilayer-by-multilayer (ML-b-ML) process, with 6-7 layers of silica nanoparticles deposited per coating cycle onto an oppositely charged polyelectrolyte in 0.1 M NH(4)NO(3) at pH 2.7. The resultant porou…
The utility of hydroxy double salts (HDSs) for the uptake and delivery of a range of functional anions via ion exchange is demonstrated. Three novel HDS nanocomposites containing medicinal (ibuprofen and diclofenac) and agrochemical (2,4,5-trichlorophenoxyacetic acid) species have been synthesised through ion exchange…
Bistable azimuthal alignment has been produced in channels of homogeneous nematic liquid crystal with periodic grating sidewalls. The grating morphologies included a symmetric triangular profile (blaze/pitch ( b / p ) = 0), an asymmetric highly blazed sawtooth profile ( b / p = 0.5) and profiles with different amounts…
Farbenpalette: Mangan-dotierte Halbleiter-Nanokristalle gehen Doppelemissionen in Abhängigkeit von der Anregungsintensität ein. Die Emissionsfarbe der dotierten Nanokristalle kann unter monochromatischen Bedingungen über die Anregungsfluenz von Orange nach Blau abgestimmt werden. Die Farbabstimmung ist reversibel und…
The average error of pIC50 prediction reported for 140 structures in make-and-test applications of topomer CoMFA by four discovery organizations is 0.5. This remarkable accuracy can be understood to result from a topomer pose's goal of generating field differences only at lattice intersections adjacent to intended str…
Abstract Oxidische Nanomaterialien verbinden eine einzigartige und unerschöpfliche Vielfalt struktureller Motive und Eigenschaften mit einer großen Bandbreite morphologischer Variationen – dies macht sie unverzichtbar für nanotechnologische Innovationen. Die Familie der Oxidmaterialien ist in einem stetigen Wachstum b…
We derive a fluid-dynamic model for electron transport near a Dirac point in graphene. Starting from a kinetic model, based on spinorial Wigner functions, the derivation of the fluid model is based on the minimum entropy principle, which is exploited to close the moment system deduced from the Wigner equation. To this…
We developed a novel and facile method to hydrogenate graphene by using a conditioning catalyst upstream of the graphene sample to generate atomic hydrogen.
The sorption of vapors by cellulose samples and by some cellulose derivatives was studied at 25 oC. To describe sorption isotherms, a thermodynamic equation was proposed: A=Ao/[1-(RT/g)lnφ], where Ao is maximal sorption value, φ is relative pressure of vapors, and g is specific thermodynamic potential. Depending on th…
Two series of novel boron difluoride adducts (BDFs), namely [BF(2)(OO(R(n)))] (type I) and [BF(2)(OO(2R(n)))] (type II) (R = C(6)H(4)OC(n)H(2n+1); n = 10-18), containing β-diketonate ligands bearing 4-alkoxyphenyl substituents in position 1 or in positions 1,3 of the β-diketonate core, respectively, have been prepared…
The activity of class D β-lactamases is dependent on Lys70 carboxylation in the active site. Structural, kinetic and affinity studies show that this post-translational modification can be affected by the presence of a poor substrate such as moxalactam but also by the V117T substitution. Val117 is a strictly conserved…
Abstract Dinuclear lanthanide(III) complexes of the macrocycles 1,4‐bis[1‐4,7,10‐ tris(carbamoylmethyl)‐1,4,7,10‐tetraazacyclododecane]‐ m ‐xylene ( 1 ) and 1,3‐bis[1‐4,7,10‐tris(carbamoylmethyl)‐1,4,7,10‐tetraazacyclododecane]‐ p ‐xylene ( 2 ) with Ln III = Eu III , Tb III were prepared. Studies using direct excitati…
This NJC Perspective article gives an overview on recent achievements in the synthesis and structural characterization of bent and linear triple-decker sandwich complexes as well as the first tetra-deckers and novel cluster-centered multiple-decker sandwich complexes containing lanthanide and actinide metals.
Abstract In den vergangenen Jahren ist das Interesse an Graphen sprunghaft angestiegen. Ähnliche Materialien wurden allerdings schon im Jahr 1962 ausgehend von Graphenoxid erhalten, und chemische Modifikationen von Graphit sind sogar schon seit 1840 bekannt. Indem wir die faszinierenden Entwicklungen bei der Synthese…
The phase behavior of semiflexible-coil diblock copolymer melts is studied by solving the self-consistent field theory (SCFT) equations of wormlike chains. Significant improvement of numerical accuracy and stability is achieved by a hybrid numerical implementation of SCFT, in which the space-dependent functions are tr…
Measurements of the superconducting transition temperature, T_c, under hydrostatic pressure via bulk AC susceptibility were carried out on several concentrations of phosphorous substitution in BaFe_2(As_{1-x}P_x)_2. The pressure dependence of unsubstituted BaFe_2As_2, phosphorous concentration dependence of BaFe_2(As_…
The atomic structure of dislocation cores is decisive for the understanding of plasticity in crystalline solids. The core structure of dislocations in sapphire introduced by high-temperature plastic deformation has been investigated with the use of the negative spherical-aberration imaging technique. The ability of th…