Materials Literature
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Using single-crystalline Fe(3)O(4)(111) films grown over Pt(111) in UHV as a model-support, we have characterized the nucleation behaviour and chemical properties of Pd particles grown over the film using different deposition techniques with scanning tunnelling microscopy and X-ray photoelectron spectroscopy. Comparis…
Transparent conductive titanium-doped indium oxide (ITiO) films were deposited on corning glass substrates by RF magnetron sputtering method. The effects of RF sputtering power and Ar gas pressure on the structural and electrical properties of the films were investigated experimentally, using a 2.5 wt% TiO 2 -doped In…
Recent simulations have studied the formation of patterns in a binary mixture of immiscible surfactants adsorbed onto the surface of a spherical nanoparticle. The resulting patterns (Janus, spots and stripes) were in good agreement with experimental results. We perform dissipative particle dynamics (DPD) simulations t…
The surface skin of a banded blue-sprat had the mesocrystal structures of biogenic guanine crystals and cytoplasm. The platy guanine crystals were organized in the parallel direction to the surface skin with incorporation of cytoplasm. The size of the platy guanine crystal as a unit was larger than that of the other f…
The influence of water-soluble alginates (Alg) and pectates (Pect) anionic polyelectrolytes as natural polymers containing secondary alcoholic groups on the rate of dissolution of aluminum metal in alkaline medium has been investigated by gasometric and weight-loss techniques. The results showed that addition of algin…
The introduction of a secondary phase is an efficient and effective way to improve the electrochemical performance of graphene towards energy storage applications. Two fundamental strategies including pre-graphenization and post-graphenization were widely employed for graphene-based hybrids. However, there is still an…
Palladium nanoparticles (PdNPs) were conveniently prepared in tetraglyme (TG) solution using a variety of palladium precursors. At 140 °C, TG promoted Pd(3)(OAc)(6) to produce irregular shaped PdNPs with an average size of 4 nm. When these PdNPs were re-dispersed in TG and used for the dehydrogenation of ammonia boran…
Ring opening transesterification polymerization of lactones derived from menthone and carvomenthone was used to synthesize polyols for polyurethane film formulations. The polyols were synthesized at 140 °C using tin(II) octoate as catalyst, diethanolamine as trifunctional initiator, and with ratios of lactone : initia…
Colloidal gelation has been extensively studied for the case of purely attractive systems, but little is understood about how colloidal gelation is affected by the presence of repulsive interactions. Here we demonstrate the gelation of a binary system of oppositely charged colloids, in which repulsive interactions com…
In the present study, bifunctional silica-coated Y2O3:Eu3+,Co2+ spherical-shaped submicron composite particles were successfully prepared using a facile urea-assisted homogenous precipitation method. Synthesized Y2O3:Eu3+,Co2+ phosphor composites showed both ferromagnetic behaviour and strong visible red luminescence…
Modelling of hydrogen-induced stress-corrosion cracking (HISCC) has to consider coupling effects between the mechanical and the diffusion field quantities. Four main topics are addressed: i) surface kinetics, ii) diffusion, iii) deformation and iv) crack growth. Surface kinetics is realised by a chemisorptions model,…
A series of novel monomeric and dendritic thiazolyl phosphines (generations 1 and 3) was prepared and the activity these ligands conferred to palladium in Suzuki couplings was evaluated. The heteroaryl ligands were revealed to be very efficient and were able to perform the reactions in mild conditions. Besides, their…
A re-entrant colloidal glass transition has been observed in dispersions of a model disk shaped colloid, laponite®, with the addition of an adsorbing low molecular weight polymer, poly(ethylene oxide) (PEO). In basic solutions laponite® forms a repulsive colloidal glass. With the addition of low molecular weight PEO,…
An enantiopure α-D-glucopyranoside derivative has been used as a platform to prepare artificial antenna systems based on bodipy subunits. Efficient and ultrafast energy transfer (in the fs and ps time regimes) takes place in the multibodipy systems.
Zinc oxide nanoparticles (ZnO NP's) are known for their excellent antibacterial properties. This paper describes a method for enhancing the stability and the antibacterial activity of ZnO NPs synthesized and embedded sonochemically on cotton fabrics, by pre-treating the fabric surface with cellulase enzyme. The enzyma…
Chemically converted graphene–room temperature ionic liquid (CCG–RTIL) porous materials were prepared by electrochemical reducing graphene oxide followed by solvent exchange. The resulted CCG–RTIL materials possess 3D porous structure with textured surface, and show good stability in air. Under laser irradiation the t…
A novel series of mesoporous silica materials has been developed by using non-ionic, biocompatible alkyl maltoside surfactants as organic structure directing agents and working under biomimetic conditions (e.g., room temperature and almost neutral pH) to avoid modifications of potential drugs occluded within. The obta…
Despite advances in photothermal therapy of gold nanoshells, reliable evaluations of their size dependence on the relative biological effects are needed. We report the size effects of PEGylated gold nanoshells on silica nanorattles (pGSNs) on their cellular uptake, in vivo fate and light-heat conversion efficiency in…
Wormhole‐like mesostructured monetite was successfully synthesized using cetyltrimethylammonium bromide (C 19 H 42 BrN, CTAB), as a porosity agent. X‐ray techniques and FTIR reveal that the crystalline grains consist of highly crystalline pure monetite phase. Monetite rods with diameter around 20–40 nm and length in t…
To understand the mechanism of marine atmospheric corrosion on steel, the electrochemistry of NaCl droplets formed by the deliquescence of pre-deposited NaCl particles upon exposure to high humidity on carbon steel surfaces was explored. The concentrations of the newly deliquesced NaCl droplets were near saturation. T…