Materials Literature
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A new class of high-efficiency oxidation catalysts has been prepared using a combined surfactant and colloidal crystal templating method. The Pd/CexZr1−xO2 products possess mesoporous structures and macrochannels. XRD and EXD analyses confirmed the formation of a 0.8 wt.% Pd/Ce0.6Zr0.4O2 with a cubic phase at temperat…
EXAFS spectroscopy, analysed in the frame of the multiple scattering theory, has been able to determine the local structure of [Cu(CO)2]+ complexes hosted inside ZSM-5 channels upon contacting the activated zeolite with CO from the gas phase at room temperature. We found that the number of coordinated CO molecules (1.…
The reaction between a [2+2] Schiff-base porphyrin analogue and zinc acetate results in the unusual formation of an enlarged [3+3] macrocycle that is stabilised by metal coordination and intramolecular hydrogen-bonding interactions.
The synthesis of a cobalt phthalocyanine-cobalt porphyrin heteropentamer (cobalt(II) phthalocyanine-tetrakis(cobalt(II) tetrakis(5-phenoxy-10,15,20-triphenylporphyrin))), (CoPc-(CoTPP)4), containing four units of cobalt tetraphenylporphyrin linked to a central cobalt phthalocyanine macrocycle via ether linkages is rep…
Mesoporous carbons with highly uniform and tunable mesopores were fabricated by one-step vapor deposition polymerization (VDP) using colloidal silica particles as templates and polyacrylonitrile (PAN) as a carbon precursor.
Single crystal X-ray diffraction studies show that the extended structure of dipeptide Boc-beta-Ala-m-ABA-OMe (m-ABA: meta-aminobenzoic acid) self-assembles in the solid state by intermolecular hydrogen bonding to create an infinite parallel beta-sheet structure. In dipeptide Boc-gamma-Abu-m-ABA-OMe (gamma-Abu: gamma-…
Spray pyrolysis was used to prepare high luminous phosphor particles with spherical shape. In this work, we introduce a simple but effective preparation strategy for enhancing the photoluminescence intensity of particles. The key idea was the solution technique used to densify the porous structure and simultaneously e…
This paper gives an overview of our recent work on freely suspended layer-by-layer nanomembranes containing organized arrays of nanostructures such as carbon nanotubes or gold nanoparticles. These unique organized arrays toughen the membrane and add interesting optical properties which are useful in sensor application…
Different MCM-41 samples containing framework iron were prepared and tested in CO oxidation showing unprecedented high activities after reduction in hydrogen above 773 K.
The ultrastructure of cationic dendronized polymers (denpols) of third and fourth generations (PG3 and PG4) in water was determined by using single-particle cryo-transmission electron microscopy (cryo-TEM). At concentrations in the region of 50 mg L(-1), networks of double-stranded fibers were revealed that exhibit we…
OBJECTIVE: Nickel and cobalt ions activate ICAM1 expression on endothelial cells and keratinocytes. Furthermore, these ions are released in vitro and in vivo from the types of alloys used for vascular stents, but the full biological consequences of this release is not known. In the current study, we determined if rele…
The NBO charge distribution calculated at DFT level on the [LEX](+) species [LE=N,N'-dimethylbenzoimidazole-2(3H)-thione (3) and -2(3H)-selone (4)(Scheme 1); X=I, Br] suggests that the most likely products from the reaction 3 of 4 and with IBr are the 10-X-2 charge-transfer (CT) adduct and the 10-Se-3 "T-shaped" hyper…
The concepts of melt strength or fragility, borrowed from the description of inorganic and molecular glasses, has become popular also for metallic alloys: the kinetic fragility is described by the viscous behaviour of the liquid and the thermodynamic fragility by the entropy loss on undercooling. Using the data presen…
Porous carbons with high surface area were successfully prepared from thermoplastic precursors, such as poly (vinyl alcohol) (PVA), hydroxyl propyl cellulose (HPC) and poly (ethylene terephthalate) (PET), mixing with MgO by the carbonization at 900°C in inert atmosphere. MgO in the carbonization products was dissolved…
The synthesis of a multifunctionally equipped first generation (G1) dendrimer carrying a pentapeptide with a cathepsin[space]B cleavage site, chelating ligands for Pt2+-complexation, and a dansyl fluorescence marker is described and an investigation of its cellular uptake as well as intracellular localization by confo…
Nephrogenic fibrosing dermopathy (NFD) was first described by Cowper et al. [1] as a cutaneous fibrosing disorder associated with renal dysfunction. In the last 3 years there has been a growing body of literature regarding NFD. Clinically, skin is thickened or oedematous with indurated papules and plaques. The pathoge…
Random macropore formation in variously doped p-type silicon substrates by electrochemical anodization in aqueous HF-containing dimethylsulfoxide, dimethylformamide, or acetonitrile was investigated under different operating conditions. A systematic study of the effect of the main parameters controlling the macropore…
New hybrid nanocomposites based on a methacrylate functionalized titanium-oxo cluster as nano-cross-linker show improved mechanical properties, optical transparency and photochromic activity.
Abstract Natural hokutolite, (Ba,Pb)SO 4 , is a radioactive sulfate mineral occurring in hot-spring deposit. Unlike the limited PbSO 4 content observed in natural specimens, the present study reveals that (Ba,Pb)SO 4 crystals can be grown with compositions covering the whole solid solution series of PbSO 4 and BaSO 4…
Ordered mesoporous silicas with large-pore diameters incorporating aminopropyl groups in variable quantity have been synthesized via the co-condensation of tetraethyl orthosilicate (TEOS) and 3-tert-butyloxycarbonylaminopropyltriethoxysilane templated with nonionic surfactant P123 under acidic conditions. The deprotec…