Featured Research

from universities, journals, and other organizations

Enabling Graphene-based Technology Via Chemical Functionalization

Date:
May 19, 2009
Source:
Northwestern University
Summary:
Graphene has attracted significant attention due to its potential use in high-performance electronics, sensors and alternative energy devices such as solar cells. While the physics of graphene has been thoroughly explored, chemical functionalization of graphene has proven to be elusive. Now researchers have identified conditions for chemically functionalizing graphene with the organic semiconductor perylene-3,4,9,10-tetracarboxylic-dianhydride. The chemistry's stability and uniformity suggest that it can be used as a platform for many device applications.

Graphene is an atomically thin sheet of carbon that has attracted significant attention due to its potential use in high-performance electronics, sensors and alternative energy devices such as solar cells. While the physics of graphene has been thoroughly explored, chemical functionalization of graphene has proven to be elusive.

Now researchers at Northwestern University have identified conditions for chemically functionalizing graphene with the organic semiconductor perylene-3,4,9,10-tetracarboxylic-dianhydride (PTCDA).

PTCDA self-assembles into a molecularly pristine monolayer that is nearly defect-free as verified by ultra-high vacuum scanning tunneling microscopy. In addition, the PTCDA monolayers are stable at room temperature and atmospheric pressure, which suggest their use as a seeding layer for subsequent materials deposition.

Through chemical functionalization and materials integration, the outstanding electrical properties of graphene likely can be exploited in a diverse range of technologies including high-speed electronics, chemical and biological sensors and photovoltaics.

These results will be published online May 17 by Nature Chemistry and will be featured on the cover of the June 2009 issue of the journal.

"Graphene has captured the imagination of researchers worldwide due to its superlative and exotic electronic properties," said Mark Hersam, who led the research team. He is professor of materials science and engineering in Northwestern's McCormick School of Engineering and Applied Science and professor of chemistry in the Weinberg College of Arts and Sciences.

"However, harnessing these properties requires the development of chemical functionalization strategies that will allow graphene to be seamlessly integrated with other materials that are commonly found in real-world technology," said Hersam. "The stability and uniformity of the chemistry demonstrated here suggest that it can be used as a platform for many device applications."

In addition to Hersam, the other author of the Nature Chemistry paper is Qing Hua Wang, a graduate student in materials science and engineering at Northwestern.


Story Source:

The above story is based on materials provided by Northwestern University. Note: Materials may be edited for content and length.


Cite This Page:

Northwestern University. "Enabling Graphene-based Technology Via Chemical Functionalization." ScienceDaily. ScienceDaily, 19 May 2009. <www.sciencedaily.com/releases/2009/05/090517143337.htm>.
Northwestern University. (2009, May 19). Enabling Graphene-based Technology Via Chemical Functionalization. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2009/05/090517143337.htm
Northwestern University. "Enabling Graphene-based Technology Via Chemical Functionalization." ScienceDaily. www.sciencedaily.com/releases/2009/05/090517143337.htm (accessed July 28, 2014).

Share This




More Matter & Energy News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Carbon Trap: US Exports Global Warming

The Carbon Trap: US Exports Global Warming

AP (July 28, 2014) AP Investigation: As the Obama administration weans the country off dirty fuels, energy companies are ramping-up overseas coal exports at a heavy price. (July 28) Video provided by AP
Powered by NewsLook.com
Shipping Crates Get New 'lease' On Life

Shipping Crates Get New 'lease' On Life

Reuters - Business Video Online (July 25, 2014) Shipping containers have been piling up as America imports more than it exports. Some university students in Washington D.C. are set to get a first-hand lesson in recycling. Their housing is being built using refashioned shipping containers. Lily Jamali reports. Video provided by Reuters
Powered by NewsLook.com
Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins