Materials Literature
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Monodisperse Fe(3)O(4) nanoparticles (NPs) originally synthesized with a hydrophobic oleylamine capping ligand were made water soluble and conjugated to the anticancer drug Methotrexate (MTX) using a new chemistry based on the readily available linker trichloro-s-triazine (TsT). This new linker is much more versatile…
One of the 21st century's most promising technologies is nanotechnology. Nanomedicine, an offshoot of nanotechnology, refers to highly specific medical intervention at the molecular scale for curing disease or repairing damaged tissues, such as bone, muscle, or nerve. Nanotechnology is a collective term referring to t…
The inhibiting effect of methionine and tyrosine on the corrosion of iron is researched electrochemically in 0.1M HCl, Quantum chemical calculations were performed. The level of HF with the 6–311G(d,p) basis set for methionine and tyrosine. Corrosion current density has been determined by polarization measures and the…
Effective pair interactions with a soft-repulsive component are a well-known feature of polymer solutions and colloidal suspensions, but they also provide a key to interpret the high-pressure behaviour of simple elements. We have computed the zero-temperature phase diagram of four different model potentials with vario…
A Keggin-type polyoxometalate (Cs(1.5)H(1.5)PW(12)O(40))-supported Pd catalyst is efficient for the direct synthesis of H(2)O(2) from H(2) and O(2) in the absence of any acid or halide additives under atmospheric pressure.
Soluble conducting polyaniline composites with low-level loadings of Fe 3 O 4 have been synthesized and characterized. The composites are dispersible in many solvents including water and soluble in polar organic solvents, such as chloroform, N -methylpyrrolidone, and methanol. The conductivity of the sample increases…
Chemically modified carbon nanomaterials, such as nanodiamond (ND) soot, onionlike carbon (OLC), and carbon nanotubes (CNTs), were investigated as electrodes for electrochemical capacitors in high rate applications, that is, applications that drain power very fast. A layer of Keggin-type polyphosphomolybdate was coate…
The dynamics of the ignition and extinction of the catalytic partial oxidation (CPO) of methane to hydrogen and carbon monoxide over Pt-Rh/Al(2)O(3) and Pt/Al(2)O(3) were studied in the subsecond timescale using quick-EXAFS with a novel cam-driven X-ray monochromator employing Si(111) and Si(311) crystals. The experim…
Raman spectra of aqueous beryllium perchlorate, chloride, nitrate, and sulfate solutions have been measured over a broad concentration (0.098-4.950 mol L(-1)) range. The Raman spectroscopic data suggest that the tetra-aqua beryllium(II) ion is thermodynamically stable in perchlorate, chloride, and nitrate solutions ov…
Biology and Environment: Proceedings of the Royal Irish Academy - Volume 109B, Number 3, November 2009
Using a Cu ( I )-catalyzed carbohydrate azide-alkynylphenylporphyrin cycloaddition (the so-called "click" chemistry), we have synthesized in high yields, a series of four new porphyrin-carbohydrate conjugates containing either one or four galactose or lactose moieties linked via triazole units to a meso-phenyl group o…
Although titanium is considered to be a ubiquitous element as it has the 10th-highest Clarke number of all the elements, it is actually classified as a rare metal because the current refinement process for the metal is more environmentally damaging than the processes used to refine iron and aluminum. Furthermore, the…
Triblock copolymer templated synthesis of titania films in water (without ethanol) was demonstrated, which led to the formation of emulsions in the aqueous precursor solutions by adding hydrophobic 1,3,5-triisopropylbenzene (TIPBz). A cubic Im-3m mesoporous anatase film containing emulsion-induced macropores was prepa…
Structural molecular biology over the past several decades has progressed from studies of the individual proteins, subunits, and domains that accomplish specific biochemistry to seeking to understand the dynamic bio-molecular complexes and assemblies that are responsible for biological function. This progress has led…
Photocatalysis of powder was investigated to evaluate its ability for the stoichiometric decomposition of water into and . Although thus far it has been indicated that can function as a photocatalyst for the overall water splitting, evolution was found to take place solely while there was no generation of . Moreover,…
Alcohol and aqueous extracts from the seeds of Cassia tora were investigated for their anthelmintic activity against Pheretima posthuma and Ascardia galli. Three concentrations (25, 50 and 100 mg/ml) of each extracts were studied in activity, which involved the determination of time of paralysis and time of death of t…
Silver nanoparticles exhibit new optical properties, which are observed neither in molecules nor in bulk metals. One example is presence of absorption band in visible light region. A class of materials in which two or more phases (solid, liquid or gas) of same or different materials co exists with at least one dimensi…
Controlled self-assembly of magnetic nanocrystals has important applications in biomedical fields. In this study, hydrophobic superparamagnetic iron oxide (SPIO) nanocrystals are self-assembled into small clusters (mean diameter <100 nm) in water phase with the help of partially alkylated hyper-branched polycation, po…
We have studied silica nanoparticle layers spread at the air/water interface. The surface pressure of the layers has been determined in a Langmuir trough via two orthogonal Wilhelmy plates. We observed significant differences in surface pressure according to the preparation protocol: layers spread then compressed or l…
We describe the synthesis, structure and magnetic characterization of several oxalate-based bimetallic 1D systems. We will exemplify how by suitable choice of the molecular building blocks and strict control of their arrangement in the solid state, the magnetic properties of these low-dimensional materials can be tune…