Navigation Links
Carbon molecule with a charge could be tomorrow's semiconductor
Date:9/8/2008

Blacksburg, Va. Virginia Tech chemistry Professor Harry Dorn has developed a new area of fullerene chemistry that may be the backbone for development of molecular semiconductors and quantum computing applications.

Dorn plays with the hollow carbon molecules known as fullerenes as if they are tinker toys. First, in 1999, he figured out how to put atoms inside the 80-atom molecule, then how to do it reliably, how to change the number of atoms forming the carbon cage, and how to change the number and kinds of atoms inside the cage, resulting in a new, more sensitive MRI material and a vehicle to deliver radioactive atoms for applications in nuclear medicine.

As part of the research to place gadolinium atoms inside the carbon cage for MRI applications, Dorn created 80-atom carbon molecule with two yttrium ions inside. Then he began to fool with the materials of the cage itself. He replaced one of the 80 atoms of carbon with an atom of nitrogen (providing Y2@C79N). This change leaves the nitrogen atom with an extra electron. Dorn discovered that the extra electron, instead of being on the nitrogen atom on the fullerene cage surface, ducks inside between the yttrium ions, forming a one-electron bond. "Basically, a very unusual one electron bond between two yttrium atoms," he said.

Discovery of this new class of stable molecules (M2@C79N ) was supported by computational studies by Daniel Crawford, associate professor of chemistry at Virginia Tech, and the structure was confirmed by x-ray crystallographic studies by Alan Balch , professor of chemistry at the University of California, Davis.

This research is reported in the September 6, 2008, online issue of the Journal of the American Chemical Society (JACS), in an article by Dorn and his colleagues at Virginia Tech and UC Davis.* The article does not speculate about potential applications, but Dorn does.

"No one has done anything like this," said Dorn. "Since the article was published, we now know that we can take the electron back out of the fullerene cage."

He says the discovery could be important to the new fields of spintronics, molecular electronics, and micro to nanoscale electronics, as well as the new field of quantum computing.

"The single electron bonded-diatomic yttrium has unique spin properties that can be altered. Increasing the polarization of this spin, could be important for improving the sensitivity of MRI and NMR, he said.

But more interesting are the electronic applications. "If we replace one of the carbon atoms with boron instead of nitrogen, we would be an electron short, instead of having an extra electron. Now you have the components of a semiconductor," Dorn said.

"I don't down whether it is important yet or not," he said. "People have been working on adding a nitrogen atom to standard 60-carbon fullerene."


'/>"/>

Contact: Susan Trulove
STrulove@vt.edu
540-231-5646
Virginia Tech
Source:Eurekalert

Related biology technology :

1. Sheet of carbon atoms acts like a billiard table, physicists find
2. Sheet of carbon atoms acts like a billiard table, physicists find
3. Researchers measure carbon nanotube interaction
4. The sensitive side of carbon nanotubes: Creating powerful pressure sensors
5. NASA Goddard Space Flight Centers carbon nanotube manufacturing technology wins Nano 50 Award
6. Understanding of actuator properties of carbon nanotubes bring micro machines closer
7. Improved wettability of carbon nanotubes opens the door to new possibilities
8. Growing tiny carbon nanotube wires to connect computer chips of the future
9. Carbon nanotubes to be replaced by MoSIx nanowires in high-tech devices says new study
10. FED-TVs with carbon nanotube technology could supersede plasma and LCD flat screens
11. Clemson researcher studies carbon fibers for nuclear reactor safety
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2016)... TORONTO , June 23, 2016 /PRNewswire/ - ... Ontario biotechnology company, Propellon ... the development and commercialization of a portfolio of ... cancers. Epigenetic targets such as WDR5 represent an ... contribute significantly in precision medicine for cancer patients. ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... and Mold) microbial test has received AOAC Research Institute approval 061601. , “This ... introduced last year,” stated Bob Salter, Vice President of Regulatory and Industrial Affairs. ...
(Date:6/23/2016)... 23, 2016   EpiBiome , a precision microbiome ... in debt financing from Silicon Valley Bank (SVB). The ... to advance its drug development efforts, as well as ... "SVB has been an incredible strategic partner to ... traditional bank would provide," said Dr. Aeron Tynes ...
(Date:6/23/2016)... ... 23, 2016 , ... In a new case report published today in STEM ... who developed lymphedema after being treated for breast cancer benefitted from an injection of ... dealing with this debilitating, frequent side effect of cancer treatment. , Lymphedema ...
Breaking Biology Technology:
(Date:6/20/2016)... DALLAS , June 20, 2016 ... criminal justice technology solutions for public safety, investigation, ... by the prisons involved, it has secured the ... Corrections (DOC) facilities for Managed Access Systems (MAS) ... (4) additional facilities to be installed by October, ...
(Date:6/7/2016)... , June 7, 2016  Syngrafii Inc. ... a business relationship that includes integrating Syngrafii,s patented ... branch project. This collaboration will result in greater ... the credit union, while maintaining existing document workflow ... http://photos.prnewswire.com/prnh/20160606/375871LOGO ...
(Date:6/1/2016)... Favorable Government Initiatives Coupled With ... Identification to Boost Global Biometrics System Market Through 2021  ... report, " Global Biometrics Market By Type, By ... 2011 - 2021", the global biometrics market is projected ... of growing security concerns across various end use sectors ...
Breaking Biology News(10 mins):