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。
New polyimide precursors were synthesized by simple one step procedure. (Z)-3-(4-Nitro-phenylcarbamoyl)-acrylic acid (A2), (Z)-3-(4-Ciano-phenylcarbamoyl)-acrylic acid (A3), (Z)-3-(4-Diethyl-phenylcarbamoyl)-acrylic acid (A4) and (Z)-3-[N′-(2,4-Dinitro-phenyl)-hydrazinocarbonyl]-acrylic acid (A6) were characterized by…
Identification of structures of active sites of catalysts under realistic conditions is key for understanding the structure-reactivity relationship and mechanism of catalytic reactions. Various in situ techniques and novel theoretical concepts (e.g. ab initio atomistic thermodynamics) have been developed. As an exampl…
This article discusses the mechanical properties of different composites based on pine, oak wood, rapeseed straw and isotactic polypropylene. The surface of the filler was modified with acetic anhydride to enhance the compatibility between hydrophilic lignocellulosic components and hydrophobic polypropylene matrice. A…
Linear response calculations of the magnetic exchange interactions in Mn-doped ScN were carried out in the rigid-spin approximation by using the muffin-tin-orbital Green's function method. They show that the exchange interactions are long range and strongly affected by disorder, band gap corrections, and doping. The c…
Natural fibres well protected against biodeterioration and with barrier properties can be used in many new applications. The study aims at using eco-friendly biocides, not used in textile industry so far, for antimicrobial finishing of natural fibres. The research was carried out on flax fibre and linen fabric protect…
Polar oxide surfaces constitute a class of surfaces long considered as unstable because of their theoretically predicted diverging electrostatic surface potential, although such crystal orientations form spontaneously in nature. Because of the intrinsic hindrances (charge build-up, electron correlation effects) a reli…
Soluble anthracenedicarboxyimides have been prepared and undergo a photodimerisation of the anthracene skeleton, which is important for their application as antitumour agents, such as azonafides. Reaction under strongly alkaline conditions causes C-C coupling to form soluble dimeric fluorescent dyes with bathochromic…
Don't worry about bandgap. Reversible electrical bistability in a monolayer of different nanoparticles, such as CdS, CdSe, PbS, and PbSe leads to memory phenomenon in single nanoparticles. Electrical bistability and memory applications are studied in semiconducting nanoparticles of different bandgaps (see image). The…
Polypropylene-based composites containing 10–30% by weight cellulose microfibrils were studied. Composites with polypropylene and cellulose microfibrils were characterised by MS-coupled simultaneous TGA-DSC and the reinforcing effect of cellulose microfibrils was emphasised by mechanical characterization. Experimental…
Two-dimensional dopant mapping using secondary electrons in a scanning electron microscope is a useful and rapid technique for studying dopant distributions with high spatial resolution in semiconductor materials and devices. However, it has not yet found widespread application because the quantification of dopant con…
The current article presents experimental observations of erythrocytes aligning in nematic liquid crystal (NLC) medium as well as following study of the rearrangement of the NLC matrix induced by aligned bodies. The results of this study showed that a pronounced rearrangement of a pristine NLC mesophase could be induc…
Grafting of electroactive p-phenyldiazonium derivatives was performed on carbon electrodes. Reduction potentials were determined for commercial and new synthesized diazonium salts, in relation to the electronic behaviour of the para substituents of the diazophenyl groups. Their covalent attachment on the electrode sur…
In the frame of this work, we studied organometallic complexes in form of thin films oriented by corona poling. We report measurements of second and third-order nonlinear optical properties (NLO) obtained by SHG and THG techniques. For each compound studied, we determine the electronic contribution of the effective se…
Over the last few years, low energy electron microscopy and photoemission electron microscopy have been successfully used to study the growth dynamics of various organic semiconductors. In the present work, the recent advances in the application of surface sensitive electron microscopy techniques to organic thin films…
La diffraction des rayons X, la spectroscopie Raman et l'analyse par spectroscopie d'emission optique ont ete utilisees pour etudier l'effet des ions magnesium, calcium et sulfate sur la cinetique de precipitation et la microstructure du carbonate de calcium forme, par la methode de degazage controle, a partir des sol…
Polypyrrole films have been successfully synthesized on zinc surface in absence and presence of sodium bis(2-ethylhexyl) sulfosuccinate and sodium dodecylbenzosulphonate as dopants. The synthesis was achieved by galvanostatic method. The electrochemical behaviour of doped-polypyrrole films was investigated by electroc…
Abstract A series of poly(ethylene terephthalate) (PET) depolymerization experiments versus time was proceeded under optimal experimental conditions with microwave radiation, in which the temperature was 220°C, the pressure was 200 psi, the microwave power was 260 W, and the ratio of water to PET was 10 : 1. The relat…
With an increasing number of biological macromolecular crystal structures measured at ultrahigh resolution (1 A or better), it is necessary to extend to large systems the experimental valence electron density modelling that is applied to small molecules. A database of average multipole populations has been built, desc…
The nonlinear optical photonic crystal of dichloridodiglycine zinc dihydrate was grown from a mixture of glycine and zinc chloride by a slow evaporation technique. The morphology and the structure of the grown crystal were characterized using single crystal X-ray diffraction analysis. The crystalline perfection of the…
Abstract Composites containing carbon nanotubes (CNTs) in a poly(butyl methacrylate) (PBMA) have been prepared by in situ polymerization. Scanning electron microscopy and high‐resolution transmission electron microscope showed that CNTs were well dispersed into PBMA matrix and wrapped with PBMA. The infrared spectrum…