Latest chemical reactions Stories

PRINCETON, N.J., July 14 /PRNewswire/ -- Informex has launched Informex365.com, a new web portal for manufacturers that require service and support in chemical reactions commonly used in the production of pharmaceuticals, bio-technology products, industrial products and higher-value chemicals. The all-new website offers manufacturers instant access to the companies that can best support projects based on Acetylation reactions, Coupling reactions, Cryogenic reactions and nearly 200 other...

By Napolitano, Alessandra De Lucia, Maria; Panzella, Lucia; d'Ischia, Marco ABSTRACT The characteristic absorption and photochemical properties of pheomelanins are generally attributed to "benzothiazine" structural units derived biogenetically from 5-S- cysteinyldopa. This notion, however, conveys little or no information about the structural chromophores responsible for the photoreactivity of pheomelanins. At pH 7.4, natural and synthetic pheomelanins show a defined maximum around 305 nm,...

Jülich scientists synthesize stable catalyst for water oxidationJülich scientists have made an important step on the long road to artificially mimicking photosynthesis. They were able to synthesize a stable inorganic metal oxide cluster, which enables the fast and effective oxidation of water to oxygen. This is reported by the German high-impact journal "Angewandte Chemie" in a publication rated as a VIP ("very important paper"). Artificial photosynthesis may...

Scientists succeed in designing artificial enzymes that also undergo 'evolution in a test tube'Mankind triumphed in a recent 'competition' against nature when scientists succeeded in creating a new type of enzyme for a reaction for which no naturally occurring enzyme has evolved. This achievement opens the door to the development of a variety of potential applications in medicine and industry. Enzymes are, without a doubt, a valuable model for understanding the intricate works of nature....

A new type of membrane based on tiny iron particles appears to address one of the major limitations exhibited by current power-generating fuel cell technology.While there are many types of fuel cells, in general they generate electricity as the result of chemical reactions between an external fuel -- most commonly hydrogen -- and an agent that reacts with it. The membrane that separates the two parts of the cell and facilitates the reaction is a key factor in determining the efficiency of the...

By Corbin, Joseph F III; Teel, Amy L; Allen-King, Richelle M; Watts, Richard J ABSTRACT: The enhanced treatment of sorbed contaminants has been documented in modified Fenton's reactions; contaminants are desorbed and degraded more rapidly than they desorb by fill-and-draw or gas- purge desorption. The reactive species responsible for this process was investigated using dodecane as a model sorbent. Hydroxyl radical, hydroperoxide anion, and superoxide radical anion were generated separately...

Do metal complexes casually stroll around certain molecules prior to chemical reactions? Scientists in the Organic Chemistry Department of the Weizmann Institute of Science have caught a glimpse of platinum-based complexes "walking" a path to their destinations. Many types of chemical reactions and new materials depend on the integration of metals with organic (carbon based) molecules. Metals, for instance, assist in transformations of chemical compounds, while materials with many...

NASA -- Solar storms, such as the unusually intense events in October and November 2003, affect many aspects of our lives, such as radio signals and satellite communications. Now a new study partially funded by NASA and using data from several NASA instruments has shown that those late 2003 solar storms, which deposited huge quantities of energetic solar particles into Earth's atmosphere, combined forces with another natural atmospheric process last spring to produce the largest decline ever...