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Image courtesy of Chemistry World. A reaction that kicks out a single nitrogen, oxygen or sulfur atom from six-membered rings using only blue light has been developed by US scientists. The method involves breaking the C–N, C–O or C–S bond in saturated heterocycles and reclosing the ring to create smaller cyclic structures.
The most common chemical bond in the living world — that between carbon and hydrogen — has long resisted attempts by chemists to crack it open, thwarting efforts to add new bells and whistles to old carbon-based molecules. Now, after nearly 25 years of work by chemists at the University of California, Berkeley, those hydrocarbon bonds ...
Chemical bonds. Ultraviolet light shatters the links between atoms in the DNA of our skin cells, potentially causing cancer. UV light also breaks oxygen bonds, eventually creating ozone, and cleaves hydrogen off other molecules to leave behind free radicals that can damage tissue. University of California, Berkeley, chemists using some of the ...
College faculty have been leaders at the frontiers of knowledge since 1872. Current pioneering research includes premier programs in catalysis, thermodynamics, chemical biology, atmospheric chemistry, the development of polymer, optical and semiconductor materials, and nanoscience, among others.
Latimer was active in National Defense Research Committees from 1941-1945 in the fields of oxygen production, chemical warfare, and plutonium research. He was director of a Manhattan Engineering District project in the Department of Chemistry on the chemistry of plutonium from 1943 to 1947, and has been a leader of research in the Radiation ...
A reaction that kicks out a single nitrogen, oxygen or sulfur atom from six-membered rings using only blue light has been developed by US scientists. The method involves breaking the C–N, C–O or C–S bond in saturated heterocycles and reclosing the ring to create smaller cyclic structures. "This avoids having to go back to the very ...
Hartwig’s lab also recently used innovative catalysis to create a process that turns polyethylene bags into adhesives, another valuable product. Together, these new processes could make a dent in the proliferating piles of plastic that end up in landfills, rivers and, ultimately, the oceans. “Both are far from commercialization,” he said.
Source Royal Chemical Society. In a group of articles published in Chemistry World 25 years ago, the "holy grail" paper on the subject of C-H bond activation was penned by Bruce Arndtsen, Andrew Morley, Thomas Peterson and lead author Robert Bergman from UC Berkeley.
Moore was among the first chemists to use lasers in the 1960s and opened major new areas of molecular energy transfer, chemical reaction kinetics and photochemistry. In recent years he provided quantitative benchmarks for theories of chemical bond breaking. His work provides a strong foundation for models of atmospheric and combustion chemistry.
“Using chemistry, we created a tiny change, a change in just one chemical bond per about every 100 atoms, but which increased the metallicity of the nanoribbon by a factor of 20, and that is important, from a practical point of view, to make this a good metal,” Crommie said.