Materials Literature
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N-terminally Fmoc-protected dipeptide, Fmoc-Val-Asp-OH, forms a transparent, stable hydrogel with a minimum gelation concentration of 0.2% w/v. The gelation property of the hydrogel was investigated by using methods such as transmission electron microscopy, field-emission scanning electron microscopy, atomic force mic…
The importance of photooxidation in promoting formation of anhydride functional groups and thus promoting hydrolysis/biodegradation of polylactic acid and PLA nanocomposites were elucidated. PLA-based nanocomposites were prepared by adding 5% wt filler content of sodium montmorillonite (ClNa), sodium montmorillonite p…
We report formation of biocompatible hydrogels using physically cross-linked biopolymers. Gelation of silk fibroin (from B. mori silkworm) aqueous solution was effected by ultrasonication and used to entrap blended, un-cross-linked, hyaluronic acid (HA) without chemical cross-linking. HA was formed into silk/HA blende…
This work contributes to the development of new feedback-active anticorrosion systems. Inhibitor-doped hydroxyapatite microparticles (HAP) are used as reservoirs, storing corrosion inhibitor to be released on demand. Release of the entrapped inhibitor is triggered by redox reactions associated with the corrosion proce…
The removal of oil spills or organic contaminants from water surface is of great technological importance for environmental protection. A major challenge is the fast distribution and collection of absorbent materials with high separation selectivity, good thermal stability, and excellent recyclability. Here we reporte…
The one- and two-photon excitation emission properties of water soluble glutathione monolayer protected gold clusters were investigated. Strong two-photon emission was observed from the gold clusters. The two-photon absorption cross section of these gold clusters in water was deduced from the z-scan measurement to be…
A superhydrophobic cotton fabric is prepared by introducing a commercially available fluorinated acrylate monomer, 1H,1H,2H,2H-nonafluorohexyl-1-acrylate, onto cotton fabric under simultaneous radiation-induced graft polymerization. The superhydrophobic cotton fabric shows good laundering durability, whereby the super…
Gold nanostars provide high sensitivity for single nanoparticle label-free biosensing. The nanostars present multiple plasmon resonances of which the lower energy ones, corresponding to the nanostar tips and core-tip interactions, are the most sensitive to environmental changes. Streptavidin molecules are detected upo…
The quantum dot, one of the central materials in nanoscience, is a semiconductor crystal with a physical size on the nanometer length scale. It is often called an "artificial atom" because researchers can create nanostructures which yield properties similar to those of real atoms. By virtue of having a size in between…
Narrow-band-gap IV-VI semiconductors offer promising optoelectronic properties for integration as light-absorbing components in field-effect transistors, photodetectors, and photovoltaic devices. Importantly, colloidal nanostructures of these materials have the potential to substantially decrease the fabrication cost…
Perovskite Sr2Fe1.5Mo0.5O6 – δ (SFM) demonstrates excellent redox stability and shows remarkable electrical conductivity of 550 S cm−1 in air and 310 S cm−1 in hydrogen at 780 °C. SFM has been applied as both anode and cathode in symmetrical SOFCs using LSGM as the electrolyte, achieving a peak power density over 835…
Mechanical properties of ultrathin membranes consisting of one layer, two overlapped layers, and three overlapped layers of graphene oxide platelets were investigated by atomic force microscopy (AFM) imaging in contact mode. In order to evaluate both the elastic modulus and prestress of thin membranes, the AFM measure…
In the title complex mol-ecule, [Ti(C(10)H(15))(2)I], the paramagnetic Ti(III) atom is coordinated by two penta-methyl-cyclo-penta-dienyl (Cp*) ligands and one iodide ligand. The two Cp* ligands are in a staggered orientation. The coordination geometry at the titanium atom can be described as distorted trigonal-planar.
Spinel ferrite flakes are prepared for use as fillers in electromagnetic (EM) composites. EM attenuation composites with the flaky fillers exhibit greatly enhanced high-frequency magnetic properties and attenuation properties. The complex permeability, μ'r,oand μ"r,max, is enhanced by above 300%, and the relative atte…
It is widely accepted that carbon nanotubes (CNTs) consist of coaxially curved graphene layers. However, some CNTs, synthesized at relatively low temperature, are self-organized into rod- or plate-shaped mesostructural units with periodic structure. These findings give another point of view on the formation mechanism…
A series of 2,7-diaryl-9-cycloheptatrienylidene fluorenes (9-CHFs) were synthesized, and their structures were confirmed by spectroscopic methods. By cooperation with cupric chloride in tetrahydrofuran, 9-CHFs exhibited emission enhancement at locally excited (LE) band and aggregation induced emission at lower energy…
P.J. Nugenta, J.A. Smerdona, R. McGratha, M. Shimodab, C. Cuib, A.P. Tsaibc & H.R. Sharmaa* a Surface Science Research Centre and Department of Physics , The University of Liverpool , Liverpool , L69 3BX , United Kingdom b National Institute for Materials Science , 1-2-1 Sengen, Tsukuba , Ibaraki , 305-0047 , Japan c…
Abstract Thermoelectric modules have been the subject of recent scientific interest, in part due to their remarkable potential applications, such as waste heat recovery systems for automotive applications, industrial thermal power stations, etc. Based on their superior thermal stability in air, oxides have been consid…
Shell-like free volume theory for multicomponent polymeric systems was developed. Molecular-diffusive motion in polymeric systems is due to a large number of microscopic molecular collisions with adjacent molecules. To embody this idea, a shell-like free volume is defined as the free space surrounding the penetrant mo…
We have investigated the magnetic properties of transition-metal oxide superlattices with broken inversion symmetry composed of three different antiferromagnetic insulators, $[{\text{NdMnO}}_{3}/{\text{SrMnO}}_{3}/{\text{LaMnO}}_{3}]$. In the superlattices studied here, we identify the emergence of a relaxor, glassyli…