Navigation Links
Breakthrough in nanotechnology by uncovering conductive property of carbon-based molecules
Date:4/17/2008

PITTSBURGHUniversity of Pittsburgh researchers have discovered that certain organicor carbon-basedmolecules exhibit the properties of atoms under certain circumstances and, in turn, conduct electricity as well as metal. Detailed in the April 18 edition of Science, the finding is a breakthrough in developing nanotechnology that provides a new strategy for designing electronic materials, including inexpensive and multifunctional organic conductors that have long been considered the key to smaller, cheaper, and faster technologies.

The Pitt team found that the hollow, soccer-ball-shaped carbon molecules known as fullerenes can hold and transfer an electrical charge much like the most highly conductive atoms, explained project head Hrvoje Petek, a professor of physics and chemistry in Pitts School of Arts and Sciences and codirector of Pitts Petersen Institute for NanoScience and Engineering. The research was performed by Pitt post-doctoral associates Min Feng and Jin Zhao.

When an electron was introduced into a fullerene molecule, the shape of the electron distribution mimicked that of a hydrogen atom or an atom from the alkali metal group, which includes lithium, sodium, and potassium. Moreover, when two fullerenes were placed next to each other on a copper surface, they showed the electron distribution of their chemical bond and appeared as H2, a hydrogen molecule. The assembly exhibited metal-like conductivity when the team extended it to a wire 1-molecule-wide.

Our work provides a new perspective on what determines the electronic properties of materials, Petek said. The realization that hollow molecules can have metal-like conductivity opens the way to develop novel materials with electronic and chemical properties that can be tailored by shape and size.

Although the team worked with fullerenes, the teams results apply to all hollow molecules, Petek added, including carbon nanotubesrolled, 1-atom-thick sheets of graphite 100,000 times smaller than a human hair.

The teams research shows promise for the future of electronics based on molecular conductors. These molecule-based devices surpass the semiconductor and metal conductors of today in terms of lower cost, flexibility, and the ability to meld the speed and power of optics and electronics. Plus, unlike such inorganic conductors as silicon, molecule-based electronics can be miniaturized to a 1-dimensional scale (1-molecule-wide), which may enable them to conduct electricity with minimal loss and thus improve the performance of an electronic device.

Traditionally, the problem has been that organic conductors have not conducted electrical current very well, Petek said. The Pitt teams discovery could enable scientists to finally overcome that problem, he added.

Metal-like behavior in a molecular materialas we have foundis highly surprising and desirable in the emerging field of molecular electronics, he said.

Our work is a unique example of how nanoscale materials can be used as atom-sized building blocks for molecular materials that could replace silicon and copper in electronic devices, luminescent displays, photovoltaic cells, and other technologies.


'/>"/>

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

Related biology technology :

1. Cephalon Announces Positive Results from a Pivotal Study of FENTORA in Opioid-tolerant Patients with Non-cancer Breakthrough Pain
2. NeoMatrix Announces Additional Funding for Breakthrough Breast Cancer Screening Test
3. Kingfisher Healthcare Launches Breakthrough Product in Europe
4. New technique can be breakthrough for early cancer diagnosis
5. Breakthrough research identifies how cells from pigs may cure diabetes
6. Harmonex Introduces CliniCom(TM), a Breakthrough in Psychiatric Intake and Assessment Technology
7. Medical Breakthrough ... Doctor Discovers Penetrating Carrier That Eradicates Fungus
8. H&V Introduces HVision Technology Platform to Accelerate Development of Breakthrough Products
9. Discovery Institute Bioethicist Lauds Breakthrough in Stem Cells Research that Eliminates Need for Human Cloning
10. Stem Cell Breakthrough Could End Human Embryonic Experimentation
11. Panacea Pharmaceuticals Lung Cancer Diagnostic Test, LC Detect(SM), Named One of Time Magazines Ten Biggest Medical Breakthroughs of 2007
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/25/2016)... ... May 25, 2016 , ... ... and Drug Administration (FDA) has granted the company’s orphan drug designation request covering ... orphan drug designation granted by the FDA. , Spinocerebellar ataxia is a ...
(Date:5/24/2016)... , ... May 24, 2016 , ... Last week, Callan ... corporate executives and entrepreneurs, held The Future of San Diego Life Science event at ... Diego life science community attended the event with speakers Dr. Rich Heyman, former CEO ...
(Date:5/23/2016)... ... 23, 2016 , ... PrecisionAg® Media has released its latest ... The paper outlines the key trends that are creating both opportunities and challenges ... lot of highs and lows as the precision agriculture market has grown and ...
(Date:5/23/2016)... and LONDON , May 23, 2016 /PRNewswire/ ... See Frontage Boost Efficiency by 40% - Frontage Implement ... - Frontage Enforce Quality, Compliance and Traceability Within the Bioanalytical lab ... labs in the United States and ... to be deployed across its laboratory facilities. In addition to serving ...
Breaking Biology Technology:
(Date:3/22/2016)... March 22, 2016 ... Sensors Market for Consumer Industry by Type (Image, ... Application (Communication & IT, Entertainment, Home Appliances, ... Forecast to 2022", published by MarketsandMarkets, the ... to reach USD 26.76 Billion by 2022, ...
(Date:3/15/2016)... -- --> --> According ... "Digital Door Lock Systems Market - Global Industry Analysis, Size, ... digital door lock systems market in terms of revenue was ... to grow at a CAGR of 31.8% during the period ... (MSMEs) across the world and high industrial activity driving inclusive ...
(Date:3/11/2016)... PUNE, India , March 11, 2016 ... to a new market research report "Image Recognition Market ... by Application (Marketing and Advertising), by Deployment Type (On-Premises ... Global Forecast To 2022", published by MarketsandMarkets, the global ... in 2015 to USD 29.98 Billion by 2020, at ...
Breaking Biology News(10 mins):