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From: Drug Testing and Analysis
Vitamin C is found in many foods, and, among other things, is used to prolong shelf life. However, it is not stable in air or at room temperature. Cut fruits turn brown and the tastes of foods change. In the journal Angewandte Chemie, German researchers have now presented a systematic study of the processes that occur during the degradation of vitamin C.
Patients who suffer from gingivitis are often advised to use disinfectant mouthwashes. In the future, the active ingredients in these products could be used in a completely different area: As scientists have reported in the journal Angewandte Chemie, Chlorhexidin and Alexidin increase programmed cell death and may be effective against cancers of the mouth and throat.
Eva Wille, Vice President and Executive Director for Global Chemistry, Wiley-VCH, has been awarded the 2013 Carl Duisberg Medal by Gesellschaft Deutscher Chemiker (GDCh), the German Chemical Society, the leading continental European chemical society.
Sixty-six journals will join John Wiley & Sons, Inc., a global provider of content-enabled solutions in areas of scientific, technical, medical, and scholarly research; professional development; and education, in 2013. The titles include 52 journals moving to Wiley from other publishers or self-publication, and 14 new titles, of which eight are open access. The titles joining Wiley represent relationships with over 30 societies and associations.
Inspired by Audio Cassettes: Economical nanostructured iron–cobalt catalysts for the Fischer–Tropsch synthesis
Audio cassettes make the production process for fuels less expensive: To produce nanoparticles made of inexpensive iron oxide cores with a very thin cobalt shell, an international team of researchers modified a method developed for the production of magnetic audio tapes. As the researchers report in the journal Angewandte Chemie, their particles are easily accessible on a large scale, and are excellent Fischer–Tropsch catalysts for the production of good diesel fractions.
Diamond Wires: Carbon nanowires obtained by tempering diamantane dicarboxylic acid inside carbon nanotubes
Carbon-based nanomaterials have unique properties that make them useful for many technical applications, including lightweight construction, electronics, energy generation, environmental technology, and medicine. In the journal Angewandte Chemie, an international team of researchers has now introduced a new process for the production of especially fine carbon nanowires from carbon in the diamond configuration. In this process, molecules with a diamond-like structure are linked together inside a carbon nanotube.
Airy but Thirsty: Ultralight, flexible, fire-resistant carbon nanotube aerogels from bacterial cellulose
They can absorb vast amounts of oil or organic compounds, yet they are nearly as light as air: highly porous solids made of a three-dimensional network of carbon nanotubes. In the journal Angewandte Chemie, Chinese scientists have now introduced a simple technique for the production of these ultralight, flexible, fire-resistant aerogels. Their method begins with bacterial cellulose as an inexpensive starting material. Their fibrous lightweights can "suck" organic contaminants from polluted water and could possibly be used as pressure sensors.
When gluing things together, both surfaces usually need to be dry. Gluing wet surfaces or surfaces under water is a challenge. In the journal Angewandte Chemie, Korean scientists have now introduced a completely new concept. They were able to achieve reversible underwater adhesion by using supramolecular "velcro".
From: Drug Testing and Analysis
Squeezing Out CO2. Post-combustion capture: metal-organic framework releases stored carbon dioxide in sunlight
In order to reduce the carbon dioxide output from coal power plants, CO2 could be removed from their exhaust (post-combustion capture) and stored or, if possible, used as a carbon source for chemical syntheses. Previous approaches to this have suffered from the fact that they require too much energy. In the journal Angewandte Chemie, Australian scientists have now introduced a new metal–organic framework compound that absorbs CO2 and then releases it upon exposure to sunlight.
Uncovering Pathogens Outside the Lab. DNAzymes and gold nanoparticles: a colorimetric assay for diagnostics in the field
Infectious diseases such as malaria and syphilis can be diagnosed rapidly and reliably in the field by using a simple test developed by Canadian scientists. The test is based on the use of DNAzymes and gold nanoparticles. As the researchers report in the journal Angewandte Chemie, their test allows for the sensitive detection of bacteria, viruses, and parasites.
Wiley has launched Labtiva’s ReadCube Web Reader on Wiley Online Library, making it easier for researchers to discover, access and interact with scientific literature.
Irradiation with light is an established method for initiating polymerization or crosslinking (curing) in the production of plastics. American researchers are now using light to retroactively increase the size of the pores within a polymer network. As reported in the journal Angewandte Chemie, this new approach allows for the production of polymer gels with tailored mechanical properties.
Published by Wiley, this new 10-volume set captures every aspect of the interdisciplinary nature of magnetic resonance and provides the most complete and up-to-date source in the field.
It All Depends on the Length. Chemical functionalization of ‘toxic’ long carbon nanotubes reduces their effective length and alleviates asbestos-like pathogenicity
Carbon nanotubes resemble asbestos fibers in their form. Unfortunately, long, pure nanotubes also seem to have asbestos-like pathogenicity. In the journal Angewandte Chemie, a European research team has now reported that chemical modifications, for example with tri(ethylene glycol), can alleviate this problem if the modification makes their surface more water-friendly and reduces the effective length of the tubes.
Clogged Pores for Increased Effectiveness. Whey protein stabilizes nanotransporter and controls pH-dependent drug release
How can pharmaceuticals be safely carried through the acidic environment of the stomach and into the intestines? A team of Canadian and Australian researchers has developed a novel nanotransporter that consists of porous particles of silicon dioxide stabilized with a whey protein. In acidic environments the protein forms a gel that closes off the pores; at higher pH values, the pores are opened.
John Wiley & Sons, Inc., announced today that it has acquired the assets of the FIZ Chemie Berlin, a leading provider of online database products for organic and industrial chemists.
Wiley is pleased to announce the publication of Science Communication: A Practical Guide for Scientists, a hands-on guide to the increasingly significant discipline of science communication and public engagement.
Wiley is pleased to announce the publication of a practical how-to guide to apply and re-apply to the National Science Foundation (NSF), written by authors with successful grant histories and NSF "insider" knowledge.