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:8/31/2015)... DUBLIN , Aug. 31, 2015 Research ... of the "Saudi Arabia Biomedical Sensors Market - ... offering. The Saudi Arabia Biomedical Sensors ... a CAGR of 3.64% over the period 2014-2020 ... are adaptable to the genetic formulation of each individual. ...
(Date:8/26/2015)... 26, 2015 The report "Multi-Factor Authentication ... Factor), Application (Travel & Immigration, Government, Banking, Defense, Commercial ... to 2020", published by MarketsandMarkets, Multi-Factor Authentication Market is ... at a CAGR of 17.7% between 2015 and 2020. ... igures spread through 169 P ...
(Date:8/24/2015)... The consulting company Frost & Sullivan ... DERMALOG and its customized solutions and products for ... the Year Award". DERMALOG is particularly successful with a large ... -Cross reference: Picture is available at AP Images ( ... Thursday evening, in South Africa,s economic ...
Breaking Biology News(10 mins):Saudi Arabia Biomedical Sensors Market Report 2015 - Growth, Trends & Forecasts (2014-2020) 2Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 2Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 3Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 4Multi-Factor Authentication Market Worth 9.60 Billion USD by 2020 5Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 2Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 3
... Association (ISWA) calls the attention of the delegates of ... waste sector to reduce substantial CO 2 -emissions. ... (December 2009, www.iswa.org ) ISWA confirms that significant ... better management of solid wastes (i.e., residential and commercial ...
... TORONTO, Dec. 7 IgeaCare Solutions Inc. is pleased to ... company previously operating as IgeaCare Systems Inc. The newly formed ... funding. , IgeaCare Solutions Inc. has appointed Mr. Michael Rochon ... the new company will focus on providing a superior servicing ...
... have found that a gene already implicated in the ... the risk of being overweight during childhood. The finding ... may present an avenue for developing drugs to counteract ... childhood and adolescence. Researchers from The Children,s Hospital ...
Cached Biology News:ISWA calls attention to important contribution of waste sector to reduce substantial CO2 emissions 2IgeaCare Solutions Inc. Emerges Under New Leadership and Funding 2Type 2 diabetes gene predisposes children to obesity 2
(Date:8/31/2015)... Aug. 31, 2015  US-Australian drug discovery company, ... today confirmed its comprehensive scientific review has identified ... in areas of unmet patient need. Novogen is ... preclinical projects prior to entering into Phase 1 ... Acting Chief Executive Officer, Iain Ross ...
(Date:8/31/2015)... , Aug. 31, 2015 FLX Bio, ... development of novel cancer immunotherapies, announced today that it ... Chief Executive Officer and William Ho , M.D., ... join an experienced management team led by veterans of ... , Ph.D., Chief Scientific Officer; Jay Powers , ...
(Date:8/31/2015)... 2015 Trimb Healthcare AB ("Trimb") today announced ... Group BV ("YouMedical"), a Dutch OTC company with operations ... of approximately EUR 16 million, with solid growth and ... ambition is to build a leading international OTC company, ... goal. YouMedical gives us a stronger North European OTC ...
(Date:8/31/2015)... FL (PRWEB) , ... August 31, 2015 , ... ... bring together the world's most successful food and beverage processors, equipment manufacturers and ... competencies in product inspection and industrial weighing and formulation for manufacturers of bakery ...
Breaking Biology Technology:Novogen Announces The Outcome Of A Comprehensive Science Review 2Novogen Announces The Outcome Of A Comprehensive Science Review 3Novogen Announces The Outcome Of A Comprehensive Science Review 4Novogen Announces The Outcome Of A Comprehensive Science Review 5Novogen Announces The Outcome Of A Comprehensive Science Review 6FLX Bio Announces Senior Management Hires and Initiation of Phase 1 Trial of FLX925 2FLX Bio Announces Senior Management Hires and Initiation of Phase 1 Trial of FLX925 3FLX Bio Announces Senior Management Hires and Initiation of Phase 1 Trial of FLX925 4METTLER TOLEDO Hosts Food Safety Educational Center at 2015 PROCESS EXPO 2
Convenient 10X buffer concentrate used to maximize binding to the solid phase in microwell ELISA. Formulated to provide optimal pH and ionic strength for binding of antibodies and some antigens. Co...
... ester can be used to ... The covalently bound acridinium NHS ... the presence of hydrogen peroxide. ... be used as a detection ...
A trigger solution for Flashlight labeled materials....
... shift assay (EMSA) is a powerful tool ... as gel shift or gel retardation, the ... when subjected to electrophoresis, free DNA will ... Pierce LightShift Chemiluminescent EMSA Kit is a ...
Biology Products: