Navigation Links
Pitt, NETL researchers report molecular chain reaction thought to be impossible
Date:12/11/2008

PITTSBURGHPeople said it couldn't be done, but researchers from the University of Pittsburgh and the U.S. Department of Energy National Energy Technology Laboratory (NETL) in Pittsburgh demonstrated a molecular chain reaction on a metal surface, a nanoscale process with sizable potential in areas from nanotechnology to developing information storage technology. The researchers report in the Dec. 12 edition of Science that a single electron caused a self-perpetuating chain reaction that rearranged the bonds in 10 consecutive molecules positioned on a gold surface. As each molecule's original bond was broken by the reaction, the molecule rearranged itself to form a new molecule.

Study coauthor Kenneth Jordan, a Distinguished Professor of Chemistry in Pitt's School of Arts and Sciences and codirector of the University's Center for Simulation and Modeling, said that the ability to initiate molecular chain reactions and self-assembly has potential applications in information storage and in nanolithography, a process used in producing microchips and circuit boards.

Because the demonstrated reaction involved several molecules on a surface, it reframes researchers' understanding of surface-based chain reactions. "The conventional wisdom held that a surface reaction would fizzle soon after the electron was introduced," Jordan said. "Our work, however, shows that reactions on metal surfaces can be sustained over long distances."

Jordan and his colleagues worked with dimethyldisulfide moleculestwo CH(3) methyl groups bonded by two adjoining sulfur atoms. The added electron split the bond between the sulfur atoms of one molecule, creating a highly reactive free radical that attacked the sulfur-sulfur bond of the neighboring molecule. The radical split the bond, resulting in a new molecule and a new radical that proceeded to the sulfur-sulfur bond of the next molecule. The process repeated itself through a series of molecules.


'/>"/>

Contact: Morgan Kelly
mekelly@pitt.edu
412-624-4356
University of Pittsburgh
Source:Eurekalert

Page: 1

Related biology news :

1. MIT researchers explain mystery of gravity fingers
2. UC San Diego researchers use metagene portraits to reveal distinct stages of kidney formation
3. CSHL researchers map changing epigenetic modifications that enable transposons to run amok
4. UNH researchers track lobster migrations to improve population estimates
5. Siblings of mentally disabled face own lifelong challenges, according to researchers
6. Caltech researchers get first look at how groups of cells coordinate their movements
7. Researchers study virus with unusual properties
8. Key to curing obesity may lie in worms that destroy their own fat: McGill researchers
9. UC Davis researchers exploring gene therapy to fight AIDS
10. Researchers solve piece of large-scale gene silencing mystery
11. A little wine boosts omega-3 in the body: Researchers find a novel mechanism for a healthier heart
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... Sticklebacks, the roaches of the fish world, are the ... control body shape. They,ve moved from the ocean into ... the world, each time changing their skeleton to adapt ... and freshwater populations of sticklebacks now have turned up ... evidence that a simple change in that gene,s regulation ...
(Date:9/17/2014)... instrumental in the creation of the Santa Ana Wildfire ... fire threat potential of the powerful, hot, dry Santa ... inferno. The index was introduced Sept. 17 by the ... Diego Gas and Electric. , The index includes four ... be used to help fire agencies and other emergency ...
(Date:9/17/2014)... Washington, USA -- "Nature has developed, very cleverly, some ... desire in optical design," said Joseph Shaw, director of ... we explore surfaces and structures at the nanoscale, we,ll ... in San Diego in August during a conference called ... Shaw and Rongguang Liang of the University of Arizona ...
Breaking Biology News(10 mins):Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 2Counting fish teeth reveals regulatory DNA changes behind rapid evolution, adaptation 3UCLA scientists play key role in developing new Santa Ana Wildfire Threat Index 2Nature's designs inspire research into new light-based technologies 2Nature's designs inspire research into new light-based technologies 3
... R.I. [Brown University] In a new study in ... out in unprecedented detail a neurological signaling breakdown in ... each year, characterized by developmental delay, seizures, and other ... a synthesized, peptide-like compound called CN2097 works to restore ...
... still get through security with explosives on their person? ... Chemical and Materials Engineering has revealed a new way ... A team of researchers including post-doctoral fellows Seonghwan ... Charles Van Neste, visiting professor, Sangmin Jeon from the ...
... announced a change to current dosages for sleeping medications ... research suggests that flu dosages for women be reconsidered ... should be common practice, but we aren,t there yet. ... into medical education and clinical training, the Sex and ...
Cached Biology News:Study in mice yields Angelman advance 2Study in mice yields Angelman advance 3Study in mice yields Angelman advance 4Explosive breakthrough in research on molecular recognition 2Sex and gender competency essential to medical care 2
(Date:9/17/2014)... -- The global consumption of squalene / squalane is expected ... skin-identical chemical that finds applications in various end user industries ... in other applications like high grade lubrication, and fiber coating ... players and is regionally segregated. Sophim ( France ... ( Japan ), SeaDragon Marine Oils Ltd. ( ...
(Date:9/17/2014)... Shimadzu Scientific Instruments introduces ... which offers a powerful separation method for ... provides a new level of knowledge and ... to scientists analyzing pharmaceutical impurities, proteins, lipids, ... Comprehensive 2D-LC combines two independent separation modes ...
(Date:9/17/2014)... 2014 BioClinica®, Inc., a leading provider of ... three of its experts are speaking at the ... to be held September 28 to October 1 in ... also announced the innovative Compass technology, a ... trials acquired earlier this year, is up for the ...
(Date:9/17/2014)... 2014 Hussey Copper , a leader ... antimicrobial copper, announces Gilmour Academy Ice Arena,s conversion of ... antimicrobial solid touch surface to help protect against bacteria.  ... surface that kills greater than 99.9% of MRSA, E-coli ... , Innovative ...
Breaking Biology Technology:Squalene Market by Source (Animal & Vegetable) & by End-user Industry (Cosmetics, Pharmaceuticals & Food Industry) - Global Trends & Forecasts to 2019 2Squalene Market by Source (Animal & Vegetable) & by End-user Industry (Cosmetics, Pharmaceuticals & Food Industry) - Global Trends & Forecasts to 2019 3Shimadzu’s New Nexera-e Two Dimensional Comprehensive Liquid Chromatograph Empowers Laboratories to Separate Even the Most Complex Mixtures 2BioClinica to Present at 20th Annual SCDM Conference 2BioClinica to Present at 20th Annual SCDM Conference 3Innovative Gilmour Academy Ice Arena changes more than 200 fixtures to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 2Innovative Gilmour Academy Ice Arena changes more than 200 fixtures to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 3
... Corporation,(Nasdaq: PARS ) announced today that it ... of its 10% Convertible Debentures due November 2012. ... amount of the,Debentures, at par, and received gross ... consisted of certain existing investors in the Company,namely ...
... Clinical and Commercial Adoption of the ... Axxent(R) Electronic Brachytherapy System, FREMONT, Calif., ... Brachytherapy System, a proprietary cancer treatment,platform that utilizes X-rays ... today announced that it will,present at the 26th Annual ...
... Cascades Technologies, Inc. (CTi),an 8(a) federal government ... it has been awarded a five-year, $3.5 ... USA.gov, the U.S.,government,s official web portal. CTi ... usability assistance,optimization services and project management support ...
Cached Biology Technology:Pharmos Corporation Completes Initial Closing of Private Placement 2Xoft to Present at the 26th Annual JPMorgan Healthcare Conference 2GSA Selects Cascades Technologies, Inc. (CTi) to Support USA.gov 2
... system, offers fast and reliable batch processing ... Ultra Evolution , SAFIRE monochromator reader , ... , LS Series of Laser Scanners , ... range of detection and separation systems, Connect ...
... makes your life easier. It offers a wide array ... one balance. *Instruments supported: ... AG, XS, XP, PR, SR, PG-S, PG, SG, AT, ... User guidance on the ...
... rapid analytical to medium scale affinity purification ... vectors. Sufficient reagents are provided for purification ... under native or denaturing conditions. Crude samples ... retains STag fusion proteins. After unbound proteins ...
Request Info...
Biology Products: