Materials Literature
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A novel class of chiral coordination polymer organogels, with multi-stimuli responsive properties and suitable for use as catalysts in 1,3-dipolar Huisgen cycloaddition reaction, are reported.
The structure of single wall peptide nanotubes is presented for the model surfactant-like peptide A(6)K. Capillary flow alignment of a sample in the nematic phase at high concentration in water leads to oriented X-ray diffraction patterns. Analysis of these, accompanied by molecular dynamics simulations, suggests the…
Polysaccharide biopolymers from renewable resources are of great interest as replacements for petroleum-based polymers since they have lower cradle-to-grave non-renewable energy use and greenhouse gas emissions. Starch is widely used as a packaging material but is based on food resources such as potato or corn, and su…
The synthesis, the structural characterization and the magnetic properties of a heterotrimetallic decanuclear square, [(Mo(CN)(8))(2)(CuLTb)(4))](4+), noted MoCuTb, are described. This supramolecular compound, viewed as the first example of a metal-capped square, behaves as a single molecule magnet with a magnetic ani…
Anchorage-dependent mammalian cells are typically grown in vitro on hydrophilic glass and plastic substrata in a medium supplemented with 5–20% v/v blood-serum proteins. Inoculated single cells gravitate from suspension to within close proximity of substrata surfaces whereupon initial contact and attachment occurs fol…
Supramolecular hydrogels are promising biomaterials for cell culture in 2-D and 3-D environments. Inspired by the chemical structure of collagen, which bears the repeating tripeptide of glycine-Xaa-4R-hydroxyproline (GXO; Xaa is any one of the natural amino acids), we designed and synthesized a small library of supram…
The emissions of nitric oxide and carbon monoxide from internal combustion engines are of primary concern due to their impact on the environment and people's health. Since rhodium has proven to be an important catalyst for the reduction of nitric oxide by carbon monoxide, its accurate modeling is of significant value…
Polyoxometalates (POMs) are emerging as useful materials for a variety of applications. Many show potential for use in the biological and medical fields. Those incorporating lanthanides, with their narrow emission bands, large Stokes' shift and tuneable emission are of particular interest for the labelling and imaging…
The periodic mesoporous organosilica having the tetrakis(4-carboxyphenyl)porphyrin (TCPP) unit was successfully synthesized by the direct co-condensation method using microwave with the corresponding tetra-silane. The tetra-silane precursor, TCPP-silsesquioxane was prepared through the reaction of TCPP with the APTES(…
A novel silver/polymer composite with electrical conductivity (2.5 × 105 S cm−1) higher than that of bulk tungsten was developed through the addition of a small amount of multi-walled carbon nanotubes decorated with glutaric acid functionalized nano-silver particles (1.5 wt%). The nanotubes were used as one-dimensiona…
Sophorolipids, fully natural glycolipids, can form in water nanometre-size micelles of various geometries depending on their concentration as shown by small angle neutron scattering experiments. This property allows use of them, for the first time, as structure directing agents in the synthesis of nanostructured silic…
The adsorption of benzene and benzene-1,4-diol on two all-silica surface models derived from the framework of sanidine mineral with either hydrophobic or hydrophilic properties has been studied by means of periodic calculations based on local Gaussian basis function and the B3LYP-D functional, which includes dispersio…
In this work, we demonstrate the ability of poly(N-methylpyrrole) to form nanostructures and to detect very low concentrations of dopamine, an important neurotransmitter. Poly(N-methylpyrrole) hollow particles of controlled thickness have been prepared using the layer-by-layer assembly technique and polystyrene core-s…
Zinc sulfide (ZnS) nanoparticles are of interest for their luminescent and catalytic properties which are useful in bio-medical, electronic and photovoltaic devices. However, ZnS nanoparticles undergo reversible and irreversible phase transformations under ambient conditions, which affect the material properties and t…
Development of biologically inspired experimental processes for the synthesis of nanoparticles is evolving into an important branch of nanotechnology. Metallic nanoparticles are traditionally synthesized by wet chemical synthesis techniques where the chemicals used are quite often toxic and flammable. The present stud…
A low cost, high throughput deposition method for films of nickel oxide ͑NiO͒ and lithium-doped nickel oxide with improved electrochromic performance is demonstrated.This method is based on ultrasonic spray deposition of aqueous-based precursor solutions in air at atmospheric pressure, which represents a significant c…
This paper describes two user subroutines developed within ABAQUS to simulate coupled hydrogen transport equations. Developed user subroutines incorporate two key features in coupled hydrogen transport equations, such as the hydrostatic stress and plastic strain effects on hydrogen transport, and hydrogen-induced dila…
We analysed the dehydroxylation of 001, 101, and 111 β-cristobalite surfaces using the periodic density functional theory method and established the OH density stability diagrams of these surfaces as a function of temperature and water partial pressure. Our calculations suggest that important surface reconstructions,…
Formic acid (FA) plays a key role in the preparation of silk fibroin (SF) scaffolds from cocoons of Bombyx mori and is used for fibre distribution. In this study, we used a subcutaneous implantation model in Wistar rats to examine SF scaffolds prepared by treating the degummed cocoon with FA for either 30 or 60 min. T…
Tunable and durable photochromic materials are a rapidly expanding area of interest, with applications ranging from biomedical devices to industrial-fields. Here we examine electrospun poly (methacrylic acid) PMAA nanofibers covalently modified with the highly photochromic molecule, spiropyran (SP) or a derivate SP wh…