Materials Literature
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The present work introduces new hybrid materials based on the combination of layered double hydroxides (LDH) and two biopolymers (a protein and a polysaccharide) to produce LDH–biopolymer nanocomposites, able to act as effective drug delivery systems (DDS) in comparison to the LDH or the biopolymers alone. Ibuprofen (…
The exquisite structure of natural materials manifests the importance of particle mobility and load transfer in developing advanced polymer nanocomposites; however, it is difficult to concurrently meet these two mutually exclusive requirements. To address this issue, we demonstrate an approach that constructs a hierar…
Coupled split-ring-resonator metamaterials have previously been shown to exhibit large coupling effects, which are a prerequisite for obtaining large effective optical activity. By a suitable lateral arrangement of these building blocks, we completely eliminate linear birefringence and obtain pure optical activity and…
The adsorption mechanism of the removal of lead from water by using carboxylic functional group (COOH) functionalized on the surface of carbon nanotubes was investigated. Four independent variables including pH, CNTs dosage, contact time, and agitation speed were carried out to determine the influence of these paramet…
The growing use of light alloys in industries such as aerospace, sports equipment and biomedical devices is driving research into surface engineering technologies to enhance their properties for the desired end use. Surface engineering of light alloys: Aluminium, magnesium and titanium alloys provides a comprehensive…
The present review highlights the recent developments on the reversible hydrogels which are formed through self-assembling and association mechanisms of well-defined macromolecular entities and which are able to respond to external stimuli like temperature, pH, light and chemical triggers. Thanks to the great progress…
We report the synthesis of highly luminescent, water soluble quantum clusters (QCs) of gold, which are stabilized by an iron binding transferrin family protein, lactoferrin (Lf). The synthesized AuQC@Lf clusters were characterized using UV-Visible spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission elec…
A true nanoreactor composed of mesoporous silica hollow spheres and Pd nanoparticles residing inside the spheres shows superior activity in Suzuki coupling reactions with 99.5% yield in 3 min.
Introduction. Part 1 Materials for lightweight automotive structures: Advanced steels for lightweight automotive structures Aluminium alloys for lightweight automotive structures Magnesium alloys for lightweight powertrains and automotive structures Thermoplastics and thermoplastic-matrix composites for lightweight au…
Polydopamine film which contains amine groups and phenolic hydroxyl groups exhibits fully reversible, pH-switchable permselectivity for both cationic and anionic redox-active probe molecules. At high pH the film has a net negative charge that excludes anions but passes cations; at low pH it is positively charged and e…
Halloysite clay tubes of 50 nm diameter and ca. 1000 nm length were analyzed as potential nanocontainers for loading, storage and induced sustained release of chemical agents. Halloysite is a natural aluminosilicate mineral with hollow cylindrical geometry and submicron size. Halloysite nanotubes loaded with the corro…
Biomaterial matrices are being developed that mimic the key characteristics of the extracellular matrix, including presenting adhesion sites and displaying growth factors in the context of a viscoelastic hydrogel. This review focuses on two classes of materials: those that are derived from naturally occurring molecule…
Supramolecular gels have attracted an enormous amount of interest from scientists in the last decade because of their potential applications proposed up to now in fields of great social impact like biomedicine or materials science. However, their potential in organic transformations and catalysis has been only scarcel…
Mesoporous carbons with large uniform pore sizes and high surface areas are of great interest due to their potential applications in electrochemical double layer capacitors (EDLCs), hydrogen storage, separation and catalysis. Here, we report a facile synthesis approach to highly ordered mesoporous carbon nanofiber arr…
The confinement within carbon nanotubes (CNTs) improves the electrochemical reversibility of CNT-confined MnO(2) nanoparticles and benefits their capacitive enhancement, which exhibit a specific capacitance of 225 F g(-1) for the composites and MnO(2) normalized capacitance as high as 1250 F g(-1).
We report the synthesis and photophysical properties of silver-nanoclusters templated on DNA, with fluorescence excitation and emission at distinct wavelengths that are tuned to common laser excitation wavelengths.
A facile method was developed to prepare a magnetic Ag nanocomposite. The 3-D nanofibrous structure of bacterial cellulose (BC) was homogenized with a ferric and ferrous mixture by a high speed blender. Magnetite nanoparticles were precipitated and incorporated into BC nanostructure by adjusting the homogenate to alka…
B3LYP is by far the most popular density functional in chemistry. Nevertheless, there is growing evidence, showing that B3LYP (1) degrades as the system becomes larger, (2) underestimates reaction barrier heights, (3) yields too low bond dissociation enthalpies, (4) gives improper isomer energy differences, and (5) fa…
The paper reviews the different methods for flame retarding polylactide (PLA). They are critically discussed based on the open and patent literature. No real specific methods have been developed for PLA but some approaches provide high performance and especially intumescence. The mechanisms of action remain similar to…
The dissolution mechanism of cellulose in ionic liquids has been investigated by using cellobiose and 1-ethyl-3-methylimidazolium acetate (EmimAc) as a model system under various conditions with conventional and variable-temperature NMR spectroscopy. In DMSO-d(6) solution, NMR data of the model system clearly suggest…