Materials Literature
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Carbon nanostructures (CNSs) are attractive and promising nanomaterials for the next generation of tissue engineering scaffolds, especially in neural prosthesis. Optimizing scaffold vascularization may be an important strategy to promote the repair of damaged brain tissue. In this context, the idea was to evaluate the…
Polymeric micro-networks architecture (PMNs) based on chitosan and its graft copolymer with acrylamidoglycolic acid (AGA) by precipitation and cross-linking methods for the controlled release of 5-fluorouracil (5-FU) is described. The chitosan and its graft copolymers are cross-linked with different ratios of ureaform…
Hierarchically porous carbon monoliths with high specific surface areas have been fabricated by removing nano-sized silica phase from carbon/silica composites pyrolyzed from bridged polysilsesquioxane. This activation method improves the homogeneity between inner and outer parts of the monoliths compared to the conven…
Foundry workers are potentially exposed to a number of carcinogens. This study was conducted to describe the cancer incidence associated with employment in small-sized Korean iron foundries and to compare those findings to the Korean population. Cancer morbidity in 208 Korean foundries was analyzed using the Standardi…
The isolation of endothelial progenitor cells from human peripheral blood generates a great hope in vascular tissue engineering because of particular benefit when compared with mature endothelial cells. We explored the capability of progenitor-derived endothelial cells (PDECs) to line fibrin and collagen scaffolds in…
Two new azido-Co(II) complexes with pyrazine carboxylato ligands, [Co(N(3))(L)·H(2)O](n) (L = pyrazine-2-carboxylato) (1) and [CoNa(N(3))(2)(L)](n) (2), have been obtained by carefully tuning the Co(II):N(3)(-) ratio. Here we present the structural and magnetic characterization of these new species. Modulation of the…
Nanoporous gold fabricated by the dealloying of binary Au alloys has a three-dimensional network of fine ligaments on the nano-scale, which is a novel unsupported gold catalyst with exceptional catalytic activity for CO oxidation. Here we report a new nanoporous structure—a composite formed by alternately layered Au/F…
A novel and promising material, guanylurea(1+) hydrogen phosphite, which belongs to the group of inorganic salts of polarizable organic molecules was prepared. Its real potential for optical applications is based on the simplicity of synthesis, good ability to crystallize, transparency, thermal stability and efficienc…
Cylindrical carbon monoliths (7 mm in diameter and 3.9 mm in height) with a microporous structure and compacted pellets derived from the monoliths with the same mass and similar geometric dimensions (6 mm in diameter and 3.2 mm in height) are studied as electrodes in two-electrode supercapacitor cells. The monolith ce…
The phthalodinitrile derivative 3 was prepared by the reaction of 1,4-dithioerythritol 1 and 4-nitrophthalonitrile 2 in dry DMF as the solvent in the presence of K(2)CO(3) as the base by the method of nucleophilic substitution of an activated nitro group in an aromatic ring. The template reaction of compound 3 with th…
This communication reports morphological studies of a novel C(3)-symmetric thiolated, tren-based ditryptophan conjugate. The exposed thiol groups on the soft structures interacted with gold nanoparticles and mediated the release of encapsulated fluorescent dye, when exposed to natural sunlight.
Cytochrome c (cyt. c, molecular size of 2.5 nm × 2.5 nm × 3.7 nm) was immobilized on six types of mesoporous silicates (MPS), having pore sizes from 2.8 to 15.0 nm, and their catalytic activities were evaluated by oxidation of thioanisol with H2O2. Among the silica materials, cyt. c immobilized on MPS pore size of 3.4…
Faster-than-exponential decays and hyper-diffusive dispersion relationships detected in X-ray photon correlation spectroscopy measurements on poly(N-isopropyl acrylamide) hydrogels in the out-of-equilibrium jammed state are the result of uniform deswelling.
High‐quality boron nitride nanotubes were synthesized by annealing porous precursor in flowing NH 3 gas at 1150°C. The porous precursor B 18 Ca 2 (MgO) 9 was produced by self‐propagation high‐temperature synthesis (SHS) method using Mg, B 2 O 3 , and CaB 6 as the starting materials, which played an important role in s…
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Nanorods assembly of mesoporous boehmite (γ-AlOOH) films of thickness ∼2 μm with a preferential crystallographic growth along <020> have been synthesized. The films have been deposited on glass substrates by dip-coating using aluminium tri-sec-butoxide derived AlOOH sols in presence of CTAB. CTAB allows assembly of co…
The differences in the destruction mode of anode-supported solid oxide fuel cells (SOFCs) as a result of small and large amounts of oxidation were investigated. The cells were oxidized by O 2 − ions and rereduced by H 2 gas (redox cycle). When 0.6% of Ni in the anode was oxidized, its microstructure near the electroly…
We are reporting the first supramolecular dimeric units of basic carboxylates. The neutral [Fe(III)₂M(II)O] motif for different 3d M metals is covalently bound through 2,2'-bipyrimidine. We have structurally characterized the hexanuclear clusters and the related trinuclear building blocks. Their magnetic properties ha…
A previous work (S. Abelló and J. Pérez-Ramírez, Adv. Mater., 2006, 18, 2436) revealed an unanticipated variation in the textural properties of Mg–Al hydrotalcite, prepared by continuous coprecipitation with short residence time, τ = 1 s which, at that time, was not fully understood. Herein, we report the generalisati…
The synthesis, structure and magnetic properties of a 3D network based on {Co₄(cit)₄}⁸⁻ (H₄cit = citric acid) cubane units linked by octahedral Co(II) centres is reported.