Materials Literature
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Hierarchical porous metal oxide/polymer hybrid and polymer materials were fabricated by replication of natural cellulosic substances and successive removal of the template cellulose components using a solution dissolving method under mild conditions. Commercial filter paper was employed as the template, metal oxide/po…
A fast and versatile microwave- (MW)-assisted method for the post-calcination functionalization of MCM-41 is proposed. The efficiency of the grafting is improved in the absence of solvent and depends on the MW-heating time. Moreover, working under the same reaction conditions, the organic loadings strictly depend on t…
We demonstrate magnetic capsules with high uptake capacity by combining single-hole hydroxyl-functionalized PEDOT hollow spheres and Fe(3)O(4) nanoparticles; potential applications include pollutant removal and controlled drug delivery.
Pure and Pb 2+ doped SrB 2 O 4 materials were prepared by a solution combustion synthesis method. The synthesized materials were characterized by using the powder XRD and FTIR. The photoluminescence properties of Pb 2+ doped SrB 2 O 4 materials were investigated using spectrofluorometer at room temperature. The emissi…
Computational scientific simulations have long used parallel computers to increase their performance. Recently graphics cards have been utilised to provide this functionality. GPGPU APIs such as NVidia’s CUDA can be used to harness the power of GPUs for purposes other than computer graphics. GPUs are designed for proc…
The effects of chemical modification on the mechanical properties, morphology and water absorption of low density polyethylene/egg shell powder composites were studied. The mechanical and morphological properties of low density polyethylene/egg shell powder composites with and without modifications (NaOH- isophthalic…
Fibres and Textiles in Eastern Europe
Magnesium alloys require coating protection in many applications.In this study, a rapid "electroless" E-coating process is proposed and developed for magnesium alloys by utilizing the high surface alkalinity of the alloys.The coating is evaluated to have high stability and can offer good protection for AZ91D.
We describe a series of fluorocarbon surfactant polymers designed as surface-modifying agents for improving the thrombogenicity of ePTFE vascular graft materials by the reduction of platelet adhesion. The surfactant polymers consist of a poly(vinyl amine) backbone with pendent dextran and perfluoroundecanoyl branches.…
We present a statistical mechanical approach for predicting the self-assembled morphologies of amphiphilic diblock copolymers in the melt. We introduce two conformationally asymmetric linear copolymer models with a local structural asymmetry, one of a “comb-tail” type and another that we call “continuous jackknife mod…
We present a model that explains the morphology of mesoporous SBA-15 particles based on the relative surface energies of the defining faces. We also describe how the formation process influences the morphology and hence the surface energies. The model is compared to experimental observations, made primarily with scann…
A multimetallic ruthenium(II) dendrimer is used for the first time to photosensitize dioxygen production from water by IrO2 nanoparticles; the system is more efficient than an analogous system based on the more commonly used [Ru(bpy)3]2+-type photosensitizers, in particular for the ability of the dendrimer to take adv…
A novel rodlike core–shell nanostructure containing voids between shell and core has been effectively synthesized by the Kirkendall effect. The Au@Ag2S nanoparticles exhibit preferable optical properties due to integrating the absorption behaviors of the Au cores and the Ag2S shells and existence of voids. When Ag is…
Supramolecular hydrogel microspheres are hydrogel particles formed by the self-assembly of hydrogelators in water, through non-covalent interactions. In this paper, we provide a novel strategy to prepare supramolecular hydrogel microspheres with diameters ranging from 15 to 105 microns by using microfluidics. Since th…
The electrochemical quartz crystal microbalance was used to determine redox-driven ion transfers accompanying p-doping of polypyrrole (PPy) films in the choline chloride-based deep eutectic ionic liquid ethaline; electroneutrality maintenance is gravimetrically dominated by choline cation transfer and this requires th…
Four new polymetallic iron(III) phosphonate cages have been made and structurally characterised. These are an octanuclear cage [Fe(8)O(3)(OH)(2)(O(2)C(t)Bu)(11)(PhCH(2)PO(3))(3)(py)(3)], a decanuclear cage [Fe(10)O(2)(OH)(8)(O(2)C(t)Bu)(10)(PhCH(2)PO(3))(4)(pip)(2)], a heterometallic cage [Fe(6)Li(5)(mu(3)-O)(2)((t)Bu…
A new electrochromic oligomer based on an arylamine compound containing a perfluorocyclobutane (PFCB) ring has been synthesized via 2 + 2 cyclodimerization. A new N,N,N′,N′-tetraphenyl-biphenyl-4,4′-diamine (TPD) with PFCB (TPD-PFCB) showed high thermal stability with a decomposition temperature (Td) of 435 °C. Cyclic…
The electronic structure and thus the persistent current of zigzag hexagonal graphene rings are investigated within the tight-binding formalism. The flux-dependent energy spectrum is grouped into bands with six levels per band due to inter-valley scattering at the corners of the ring. It is found that the degeneracy a…
Unusual solvent responsive wettability of water-induced superhydrophobicity was realized on a smart copolymer surface containing double amino acid units.
The syntheses of 2,6-bis(4-chloropyrazol-1-yl)pyridine (L1), 2,6-bis(4-bromopyrazol-1-yl)pyridine (L2) and 2,6-bis(4-iodopyrazol-1-yl)pyridine (L3) by electrophilic halogenation of 2,6-bis(pyrazol-1-yl)pyridine are reported. The complex [Fe(L1)2][BF4]2 crystallises in two different solvent-free polymorphs. The tetrago…