Materials Literature
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Undoped and doped with Ti, Cd and Zn CuO nanoparticles were obtained by precipitation method. The crystal structures of the CuO nanoparticles were characterized by X‐ray diffraction. Impedance spectroscopy (IS) and d.c conductivity (σd.c) measurements were performed on samples as a function of temperature and frequenc…
We describe the crystal structures of two bimetallic compounds with the malonate and an exo-polydentate N-donor ligand {[Cu(tren)]4[Cr2(mal)4(OH)2]}(ClO4)4·8H2O (3) and [Ni(Htren)2][Cr2(mal)4(OH)2]·8H2O (4) which are prepared from the dinuclear K4[Cr2(mal)4(OH)2]·6H2O precursor (2) [tren = tris(2-aminoethyl)amine and…
In conventional template-assisted synthesis, a template is used as a physical confiner to control the morphologies of the prepared materials. However, the template can also initiate interfacial reactions to form various patterned materials at its exposed surfaces. This concept can evolve into a general interfacial rea…
The role of p-toluenesulfonic acid (p-TSA) as a catalyst and/or morphology-directing agent for the formation of ZnO particles with different sizes (20 to 250 nm) and shapes (from bullet-like to complex, cauliflower architectures) was studied. One-pot, low-temperature syntheses were performed using reaction mixtures co…
Three different tetraazamacrocyclic ligands containing four amide substituents that feature groups (namely allyl, styryl and propargyl groups) suitable for polymerisation have been synthesised. Gadolinium(III) complexes of these three ligands have been prepared as potential monomers for the synthesis of polymeric MRI…
Interfaces between the ends of single- or double-wall carbon nanotubes and metal crystals (Fe, Co, Pd, and Pt) are established by electron irradiation with nanometre precision at metal-nanotube contact areas. Calculations of the bonding energies at the metal-nanotube interfaces confirm that the formation of these cova…
This paper is devoted to layered hybrid organic-inorganic materials obtained by self-assembly of organosilica precursors during the hydrolytic sol–gel process. The self-assembly is induced by lipophilic van der Waals interactions between alkylene chains. The introduction of functional groups such as –SS– gives rise to…
Shape memory alloys (SMAs) are commonly used in the actuator field especially because of their aptitude in recovering a predeterminated shape after a heating/cooling cycle. This shape recovery introduces a mechanical work that can be used to produce rotational or linear movement of a modular actuator. In this work we…
In this study, we demonstrated precise control of wettability from a thermally-responsive surface and investigated the effects of chemical composition and surface roughness. By altering feeding manners of initiators during surface grafting process of poly(N-isopropylacrylamide-co-N-isopropylmethylacrylamide) [poly(NIP…
Mesoporous titanium dioxide sub-microspheres were prepared using aerosol techniques with a size distribution from 80 nm to 3 µm. Both theoretical and experimental results showed that non-equilibrium sucrose density gradient centrifugation is an effective way to size-partition these titanium dioxide nanoparticles from…
Primarily due to the inability to form volatile etch products for copper (Cu) plasma etching at temperatures , no effective subtractive etch process for Cu has been reported. We have developed a low temperature , reactive plasma etch process for Cu films in an attempt to mitigate the size effect in electrical resistiv…
The 〈111〉 rotation recrystallization mechanism, that is the slip band intersection model, presents that a 〈111〉 rotation recrystallization nucleus is formed in an intersection part of two kinds of slip bands. The nucleus is obtained by the rotation of the deformed matrix around 〈111〉 axis normal to the common cross sl…
An electrolyzer model for the analysis of a hydrogen production system using a solid oxide electrolysis cell has been developed, and the effects of principal parameters have been estimated via sensitivity studies based on the developed model. The main parameters considered were current density, area-specific resistanc…
The effect of doping a wide range of transition metals (TMs) including V, Cr, Mn, Fe, Co, and Ni into rutile TiO2 films grown on Nb-doped TiO2(110) single-crystal substrates was investigated by photoemission spectroscopy and X-ray absorption spectroscopy. For all TM-doped TiO2 films, the Ti 2p and O 1s core levels wer…
Four new sesquiterpenoids, argutosines A-D (1-4), together with two known ones (5, 6), were isolated from the roots of Incarvillea arguta. Their chemical structures were elucidated on the basis of MS, NMR spectroscopic analysis. All the sesquiterpenoids were tested for inhibitory activities against lipopolysaccharide…
The crystallization behaviors of and nitrogen-doped films, deposited by dc magnetron sputtering, were investigated using the in situ resistance measurement, X-ray diffractometry, and transmission electron microscopy (TEM). The kinetic constants were estimated using the classical Johnson–Mehl–Avrami–Kolmogrov model fro…
Despite intensive research efforts, cancer remains one of the leading causes of death in the world. Many new methods and techniques have been developed in order to improve diagnosis and treatment, often promising in the beginning, but with limited results during the course of their application. This concise review foc…
The synthesis of a new series of phosphorus-containing dendrimers bearing as terminal groups triazatriolefinic macrocycles is reported, from generation 1 (6 macrocycles) to generation 4 (48 macrocycles). These macrocycles are linked to the dendrimers through diazaphospholane moieties (5-membered rings). The complexati…
A new container composed of an inner gel core and an outer protein shell has been prepared by sonicating oil in an aqueous protein solution. Hydrophobic drugs can be loaded into the containers and released by thermal trigger. In this paper, we attempted to discover the release mechanism of the protein containers by me…
A facile and mild macrolactonization reaction of ω-hydroxy acids was developed based on the transesterification of benzotriazole esters. Treatment of ω-hydroxy acids with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) and 1-hydroxy benzotriazole (HOBT) in chloroform provided macrolactones in excellent yields. Th…