Navigation Links
Breaking harmful bonds
Date:8/28/2008

Waltham, MAEverybody loves the way breakfast eggs conveniently slide off of Teflon without leaving any pesky pieces of egg in the pan. Indeed, the carbon-fluorine bond at the heart of Teflon cookware is so helpful we also use it in clothing, lubricants, refrigerants, anesthetics, semiconductors, and even blood substitutes. But the very strength of the C-F bond that makes it useful in so many applications also gives it formidable greenhouse gas effects that persist in nature. In a groundbreaking study this week in Science, Brandeis scientists report they have identified a catalyst that efficiently breaks the C-F bond and converts it to a carbon-hydrogen bond, rendering it harmless to the environment.

Chlorofluorocarbons (CFCs or freons) are harmful to the ozone layer. Hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs) are generating concern because they are considered super-greenhouse gases, with great potential to warm the environment by trapping solar radiation and remaining virtually indestructible in the atmosphere.

"The C-F bond is difficult to transform into other bonds under mild conditions because it is inert and unreactive; it's a challenge to chemists," said lead author chemist Oleg Ozerov, who conducted the research with postdoc Christos Douvris. "But we found a way to take a C-F bond that you can do very little with and break it and convert it cleanly into something else at room temperature."

With research support from the Department of Energy, Sloan Foundation, and Research Corporation, Ozerov identified a new catalytic process for a class of carborane-silylium compounds that causes the bonds in representative HFCs to react at room temperature, swapping their carbon-fluorine bonds for carbon-hydrogen bonds. The silylium catalyst performs the critical task of breaking the C-F bond by abstracting the fluoride from the fluorocarbon and attaching it to a silicon atom. The end product is a compound with a silicon-flu
'/>"/>

Contact: Laura Gardner
gardner@brandeis.edu
781-736-4204
Brandeis University
Source:Eurekalert

Page: 1 2

Related biology news :

1. EPA funds ground-breaking Lyme disease research
2. Breaking news: Study revives Olympic prospects for amputee sprinter
3. Shell-breaking crabs lived 20 million years earlier than thought
4. BGSU undergraduates to pilot groundbreaking genome project
5. Scientists discover record-breaking hydrogen storage materials for use in fuel cells
6. Speed plays crucial role in breaking proteins H-bonds
7. Groundbreaking Canada-US study proves link between emissions and mercury pollution in fish
8. Groundbreaking Canada-US study proves link between emissions and mercury pollution in fish
9. Certain anticancer agents could be harmful to patients with heart disease
10. Harmful algae taking advantage of global warming
11. Fish oil -- helpful or harmful?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/2/2014)... professional baseball pitchers with poor core stability are more likely ... because of injury than are pitchers who have good control ... the study, 347 pitchers were assessed for lumbopelvic control during ... they raised a leg to step up were up to ... cumulative, not consecutive during the season than were ...
(Date:9/2/2014)... issue of The FASEB Journal , ... the leading cause of blindness in adults, diabetic ... advance involves quantifying the early molecular changes caused ... Using new probes developed by scientists, they were ... diabetic retinopathy. , "My goal is to establish ...
(Date:9/2/2014)... September 2, 2014 Best-selling author Sam Kean stops ... the Megalodon, the 50-foot super shark that, despite what ... extinct. Learn all about it at http://youtu.be/KhFygIoW_MA . ... Tales of Madness, Love and the History of the ... getting the Reactions treatment in a 10-episode video series ...
Breaking Biology News(10 mins):In pro baseball pitchers, weak core linked to more missed days 2In pro baseball pitchers, weak core linked to more missed days 3Molecular probes permit doctors to detect diabetic retinopathy before vision fails 2
... pet rescue organizations are growing in number, working ... Although the majority of these organizations operate out ... winning high visibility for placing their pooches. , ... of the American Sociological Association (ASA) in Philadelphia, ...
... threatened by exotic species of the moon jellyfish being ... Using genetic data and computer simulations of ocean currents ... South Wales and the University of California, Davis, have ... naturally, according to a report in today's Proceedings of ...
... new study has found that the allergenicity of peanut ... process. Researchers from North Carolina A&T University report their ... American Society for Microbiology. , "Due to the wide ... snacks and even soups there is a need to ...
Cached Biology News:Virtual animal shelters ?How the Internet is transforming the experience of pet adoptions 2Ships bring alien jellyfish invaders to our shores 2
(Date:9/2/2014)... Winston-Salem, NC and Rocky Mount, NC (PRWEB) September 02, ... (PMG) announced today the establishment of its 11th clinical ... 1, PMG Research has assumed ownership and operation of ... in Rocky Mount, NC, further expanding PMG’s presence in ... to an additional 130,000 patients. For the patients in ...
(Date:9/1/2014)... The global oligonucleotide synthesis market is expected to ... in 2014, growing at a CAGR of 9.8% ... market is categorized on the basis of products ... synthesized oligonucleotides segment is expected to register the ... during the forecast period, owing to an increasing ...
(Date:8/31/2014)... Texas (PRWEB) August 31, 2014 ... the current state of the Epoxy Hardener ... a basic overview of the industry, including definitions, ... and Chinese domestic market analysis are provided with ... landscape of the market. A comparison between the ...
(Date:8/29/2014)... August 29, 2014 According to a new ... the global orthobiologics market was valued at USD 3,754.6 million ... USD 5,519.9million in 2019at a CAGR of 5.9% from 2013 ... years and above is afflicted by bone and joint disorders, ... year 2020. This has and will continue to increase the ...
Breaking Biology Technology:PMG Research Announces the Formation of its Eleventh Site 2PMG Research Announces the Formation of its Eleventh Site 39.8% CAGR for Oligonucleotide Synthesis Market Globally to 2019 Says a New Research Report Available at RnRMarketResearch.com 29.8% CAGR for Oligonucleotide Synthesis Market Globally to 2019 Says a New Research Report Available at RnRMarketResearch.com 39.8% CAGR for Oligonucleotide Synthesis Market Globally to 2019 Says a New Research Report Available at RnRMarketResearch.com 49.8% CAGR for Oligonucleotide Synthesis Market Globally to 2019 Says a New Research Report Available at RnRMarketResearch.com 5Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 2Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 3Global Orthobiologics Market to Reach $5,519.9 Million by 2019: Transparency Market Research 2Global Orthobiologics Market to Reach $5,519.9 Million by 2019: Transparency Market Research 3
... AMSTERDAM, November 11 Amsterdam Molecular,Therapeutics (Euronext: AMT), ... today that it has successfully treated Duchenne muscular dystrophy,(DMD) ... The proof of,concept studies were performed in collaboration with ... Sapienza, Italy) and demonstrated,effectiveness in the heart as well ...
... THE WOODLANDS, Texas, Nov. 10 Today, US ... , executive vice president and general counsel, will be ... http://www.newscom.com/cgi-bin/prnh/20091110/DA08765 ) , Watts has had a long ... worked with US Oncology providing legal services and consultation as ...
... , ST. LOUIS, Nov. 10 At the Board of ... dividend of $.145 per share, an 11.5% increase over the ... 2009 to shareholders of record on December 1, 2009. , ... Life Science and High Technology company. Our chemical and biochemical ...
Cached Biology Technology:AMT Successful in Preclinical Treatment of DMD 2AMT Successful in Preclinical Treatment of DMD 3US Oncology Announces Retirement of General Counsel Phil Watts 2
TRIS-EDTA based buffer prepared from RNase-free water suitable for storage and dilution of siRNA, pH 8, store at 4 C ...
Request Info...
...
Request Info...
Biology Products: