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。
Molecular doping: The standard model for molecular p-doping of organic semiconductors (OSCs) assumes integer charge transfer between OSC and dopant. This is in contrast to an alternative model based on intermolecular complex formation instead. By systematically varying the acceptor strength it was possible to discrimi…
While the properties of biochar are closely related to its functional groups, it is unclear under what conditions biochar develops its properties. In this study, two-dimensional (2D) (13)C nuclear magnetic resonance (NMR) correlation spectroscopy was for the first time applied to investigate the development of functio…
A joint experimental and computational systematic exploration of the driving forces that govern (i) encapsulation of active ingredients (solvent, starting material dehydration, drug/material ratio, immersion time, and several consecutive impregnations) and (i) its kinetics of delivery (structure, polarity, ...) was pe…
Crystal facet engineering of semiconductors is of growing interest and an important strategy for fine-tuning solar-driven photocatalytic activity. However, the primary factor in the exposed active facets that determines the photocatalytic property is still elusive. Herein, we have experimentally achieved high solar ph…
Low temperature heat capacity measurements of hole-doped organic conducting compound of κ-(BEDT-TTF)4Hg2.78Cl8 were performed by the ac calorimetry and the thermal relaxation technique. It was observed that low temperature electronic heat capacity at 0 T can be fitted by a kind of spin fluctuations model for two-dimen…
Recent experimental studies of Liu and Groves (J. Am. Chem. Soc. 2010; 132: 12847) on dioxomanganese(V) porphyrin complexes implicated substrate halogenation in good yield. Currently, little is known of this unique mechanism, therefore to gain understanding on the halogenation mechanism and the chemical features of th…
In this paper we study the bond distortion effect on the electric polarization in spiral multiferroic magnets based on cluster and chain models. The bond distortion breaks the inversion symmetry and modifies the d-p hybridization. Consequently, it will affect the electric polarization, which can be divided into the sp…
A full-scale hot cell test of the internal gas pressure and composition measurement by an acoustic sensor was carried out successfully between 2008 and 2010 on irradiated fuel rods in the LECA-STAR facility at CADARACHE Centre. The acoustic sensor has been specially designed in order to provide a non-destructive techn…
Currently, the most promising technology of coating formation is microarc oxidation (MAO) with unique properties of the surface layer, which combine high wear resistance, corrosion resistance, and heat and erosion resistance. Microarc oxidation can be used for parts and components manufacturing in various segments of…
Abstract Pb II complexes of 1‐alkyl‐2‐{( o ‐thioalkyl)phenylazo}imidazole (SRaaiNR'), [Pb(SRaaiNR') 2 X 2 ] were characterized by spectroscopic studies. The single‐crystal X‐ray structure of [Pb(SEtaaiNEt) 2 Cl 2 ] (SEtaaiNEt = 1‐ethyl‐2‐{( o ‐thioalkyl)phenylazo}imidazole) proved imidazolyl‐N and –SEt coordination fo…
This paper discusses the preparation of titanium-doped UO2 microsphere by the method of sol–gel, its microstructure, pore distribution, grain sizes, and the titanium element distribution through metallographic microscope, scanning electron microscope (SEM) and energy diffraction spectrum (EDS) as well as its density w…
Covalent sidewall functionalization of (5,5) armchair single-walled carbon nanotube by OH and SH groups has been investigated using density functional theory. Two possibilities for each of 1,2- (adjacent), 1,3- (alternate), and 1,4-additions were considered. Strong intramolecular O–H···O hydrogen bond plays an importa…
An efficient synthetic method of substituted meso-tetraphenylporphyrins with better isolated yields was proposed by using propionic acid, valeric acid and m-nitrotoluene as mixed-solvent systems. The porphyrin yields in mixed solvent systems were obviously higher than those in the single propionic acid or valeric acid…
Increased power dissipation in computing devices has led to a sharp rise in thermal hotspots, creating thermal runaway. To reduce the additional power requirement caused by increased temperature, current approaches apply cooling mechanisms to remove heat or apply management techniques to avoid thermal emergencies by s…
We draw several electric-field-temperature (E-T) phase diagrams with electric-field-induced birefringence contours in the nOHFBBB1M7 (n=10) and nOTBBB1M7 (n=11) (C11) mixture system by changing the C11 concentration carefully; some of the mixtures show the unusual extraordinary phase sequence where subphases with the…
Maleic anhydride (CMA) and itaconic anhydride modified collagen (CITA) were prepared as precursors for production of interpenetrated polymer networks (IPN). Calculated values for Huggins coefficient in aqueous diluted and semi-diluted solutions of modified collagen indicated a slightly tendency of aggregation for itac…
The electrochemical thermodynamics of electrolytes in porous electrodes is qualitatively different from that in the bulk with planar electrodes when the pore size is comparable to the size of the electrolyte ions. In this paper, we discuss the thermodynamics of a two component electrolyte in a porous electrode by usin…
Aus kleinen Dingen werden große: 14-Helicale N-Acetyl-β3-peptide bilden in Lösung spontan in einer einzigartigen Kopf-Schwanz-Verknüpfung Fasern. Die Fasergröße lässt sich vom Nano- bis zum Makrobereich einstellen. Die inhärente Flexibilität im Design und die einfache Synthese bieten neue leistungsfähige Möglichkeiten…
We investigated, via scanning and transmission electron microscopy, the arrangement of the microdomains of symmetric polystyrene- block -poly(methyl methacrylate) copolymer (PS- b -PMMA) confined in hemispherical cavities. The hemispherical cavities were prepared by using anodic aluminum oxide (AAO) template, where th…
Thermally stable Brønsted acid sites were generated on alumina-supported niobium oxide (Nb2O5/Al2O3) by calcination at high temperatures, such as 1123 K. The results of structural characterization by using Fourier-transform infrared (FTIR) spectroscopy, TEM, scanning transmission electron microscopy (STEM), and energy…