Press Release RSS Feed RSS

You selected: Chemistry

June 19, 2013

Wearable Electronics: Highly conductive textiles and paper with aluminum

Jackets with built-in mobile phones, sports clothes that warn you when your heart rate gets too high, wallpaper with glowing patterns—these are not concepts from a science fiction movie, some of them are actually already available, and they may soon become commonplace. These applications require electrically conductive fibrous materials. Korean researchers have now developed a new process for rendering paper and textile fibers conductive with aluminum. Their report appears in the journal Angewandte Chemie.

June 12, 2013

Brushes in 3D: Complex three-dimensional polymer brush nanostructures from photopolymerization

Polymer brushes are polymers in which individual polymer chains stand side by side on a surface, causing the chains to stick out like bristles on a brush. In the journal Angewandte Chemie, American scientists have now presented a new simple method for making three-dimensional nanostructures in a controlled fashion from polymer brushes.

June 11, 2013

Head in a Cage: Fatty acid composition of diacylglycerols determines local signaling patterns

In the human body, lipids do not only serve as energy stores and structural elements, but they are also important signaling molecules. Disruptions of lipid signal transmission seem to be involved in diseases such as atherosclerosis and diabetes, as well as inflammation and pain. In the journal Angewandte Chemie, researchers from Heidelberg have now reported on photoactivatable lipids that can be used to manipulate signaling processes in cells with both spatial and time resolution.

June 07, 2013

The Fastest and the Brightest: BODIPY–tetrazine derivatives as superbright bioorthogonal turn-on probes

American researchers have developed a probe for marking biomolecules that begins to fluoresce only when it is “switched on” by binding. As reported in the journal Angewandte Chemie, the reaction takes place very quickly and the difference in brightness between the “on” and “off” states is two orders of magnitude bigger than for conventional activatable probes.

May 27, 2013

Making Colors from Black and White: Colorfast pigments made from amorphous arrays of silicon dioxide and carbon black

It is very annoying when colors fade over time, sometimes simply from exposure to light. In the journal Angewandte Chemie, Japanese scientists have now introduced a new type of colorfast, environmentally friendly pigment. These consist of submicrometer-sized silicon dioxide particles and carbon black and are simply sprayed on to the desire surface. The resulting color is tough and does not fade.

May 15, 2013

A Magic Process: A Bottom-up process for making dodecane-in-water nanoemulsions

A new process for generating nanometer-scale oil droplets in water has been reported in the journal Angewandte Chemie by Japanese researchers, who have developed a technique they named MAGIQ (monodisperse nanodroplet generation in quenched hydrothermal solution). Under standard conditions, hydrocarbons and water do not mix; however, at high temperatures and high pressures near the critical point of water, they freely mix. Quenching homogeneous solutions of dodecane and water under these conditions in the presence of a detergent produces nanoemulsions in just ten seconds.

May 13, 2013

Catalyst Keeps Fruit Fresh Longer: Even at low temperatures, platinum nanoparticles on a support catalyze breakdown of ethylene

Ripening fruit, vegetables, and flowers release ethylene, which works as a plant hormone. Ethylene accelerates ripening, so other unripened fruit also begins to ripen—fruit and vegetables quickly spoil and flowers wilt. In the journal Angewandte Chemie, Japanese researchers have now introduced a new catalytic system for the fast and complete degradation of ethylene. This system could keep the air in warehouses ethylene-free, keeping perishable products fresh longer.

May 08, 2013

CO2 for Chemical Synthesis: Universal method for the catalytic methylation of amines with carbon dioxide

Carbon dioxide is the most common source of carbon in nature and an inexpensive building block that is useful for the chemical industry. However, because of its high stability, it is not easy to induce CO2 to react. In the journal Angewandte Chemie, German scientists have now reported a universally applicable method for the catalytic methylation of amines with CO2.

May 03, 2013

Separation by Milling: Separation of dicarboxylic acids through molecular recognition and mechanochemistry

How does one separate a mixture of components with very similar properties? In the journal Angewandte Chemie, Croatian researchers have introduced a new approach to the separation of organic compounds. In their process, a “host compound” recognizes the desired “guest molecules”, not only in solution, but also when the host and mixtures of competitive guest are milled together in the solid state. For the separation of maleic acid, this recognition through mechanochemistry delivers selectivity equal to that achieved by crystallization from a solution.

April 24, 2013

Threaded through a Pore: Single-molecule detection of hydroxymethylcytosine in DNA

Changes in the bases that make up DNA act as markers, telling a cell which genes it should read and which it shouldn’t. In the journal Angewandte Chemie, a British team has now introduced a new method that makes it possible to enrich the rare gene segments that contain the modified base hydroxymethylcytosine and to identify individual hydroxymethylcytosine molecules in DNA. Such modifications are associated with autoimmune diseases and cancer.

April 18, 2013

“Salted” Catalysts for Chemical Energy Storage: Basic alkali–metal salts improve a catalyst for steam reforming of methanol

The storage of hydrogen in the form of methanol is a highly promising method for using excess energy produced by wind and solar power plants. However, this technology requires an effective catalyst for regenerating the hydrogen. German scientists have now introduced a new platinum catalyst for this reaction, known as the steam reforming of methanol, in the journal Angewandte Chemie. The secret of their success lies in a special coating made from molten basic alkali metal salts.

April 17, 2013

Catalysis from A to Z, 4th Edition

The fourth edition of the seminal work, Catalysis from A to Z, is now available in its 4th edition.

7:00 PM EDT April 15, 2013

Exposure to Passive Cannabis Smoke Contaminates Hair for Seven Weeks

From: Drug Testing and Analysis

April 09, 2013

Wiley Job Network Announces New Resources and Tools to Connect Job Seekers and Employers

Wiley has announced a new suite of resources and tools to enhance the Wiley Job Network

April 09, 2013

Wiley Selects TEMIS for Semantic Big Data Initiative

Leading Global STMS Publisher To Deploy Luxid® Content Enrichment Platform to Enhance Customer Experience Across its Digital Products and Leverage its Six-Million Document Archive

April 08, 2013

Get to Work, Enzymes! High yield: Cell-free enzyme cascade makes hydrogen from xylose

Fuel cells are a highly promising means of producing electricity. However, the hydrogen they require is still largely obtained from coal, oil, or natural gas. Producing hydrogen from less expensive biomass is an attractive alternative, but has not produced sufficient yields to date. In the journal Angewandte Chemie, a team of American and Mexican researchers has now introduced a cell-free biosystem of thirteen enzymes that can produce hydrogen from xylose, one of the main components of plants, in yields of over 95 %.

April 03, 2013

Wiley Journals Comply With New Open Access Policies of UK Funders

John Wiley & Sons, Inc, announced today that the majority of Wiley’s journals in its open access publishing program now offers authors funded by The Wellcome Trust and Research Councils UK the opportunity to publish their articles under a Creative Commons Attribution CC BY license when paying an Article Publication Charge (APC).

April 02, 2013

FIFA-Backed Study Links Contaminated Meat to Failed Doping Tests

From: Drug Testing and Analysis

April 02, 2013

Vitamin C Goes Astray: Reaction pathways for Maillard degradation of vitamin C

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.

March 21, 2013

Mouthwash to Fight Cancer? Oral disinfectants induce apoptosis in human oral tumor cells

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.