Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New Molecule Heralds Breakthrough in Electronic Plastics

13.04.2004


An organic solution of Oligotron mixed with chemicals that help the material set under ultraviolet light (top, in vial); a "mask," made by a laser printer on an overhead transparency, which was used to control the exposure of light (middle); and a photoprinted “NSF” image after exposure to ultraviolet light and rinsing (bottom).

Credit: Photo by Brian J. Elliott, TDA Research, Inc.


New material could mean easier manufacture of paper-thin TVs and "smart" cloth

Researchers have developed a new plastic that conducts electricity, may be simpler to manufacture than industry counterparts and easily accommodates chemical attachments to create new materials.

Developed by TDA Research in Wheat Ridge, Colo., Oligotron polymers are made of tiny bits of material that possess a conducting center and two, non-conducting end pieces. The end pieces allow the plastic bits to dissolve in solvents and accommodate specialized molecules.



For decades, researchers have been trying to craft electronics that use plastics instead of metal to transmit currents. In addition to the potential savings in weight and cost, conducting polymers could be manufactured in a variety of convenient shapes, yielding such innovations as fabrics that transmit data and incredibly thin video displays.

However, because conducting polymers initially were not soluble in liquids, they could not be manufactured as easily as could their common counterparts used in soda bottles and synthetic fibers. Recent discoveries resulted in a water-soluble conducting polymer called PEDOT (polyethylenedioxythiophene), yet water can corrode device parts during manufacturing and shorten the lifespan of the end product.

Oligotron, developed with National Science Foundation (NSF) Small Business Innovation Research (SBIR) support, contains a PEDOT center, but it is soluble in non-corrosive chemicals and can attach new compounds to its end pieces, adding a variety of functions. For example, researchers have proposed end pieces that convert solar energy into electricity, ultimately creating a novel solar cell material.

Oligotron also has special properties that allow the material to be "printed" into various device shapes. When technicians shine a pattern of ultraviolet light, such as a complex circuit image, onto a film of dissolved Oligotron, the exposed areas of plastic become "fixed" like a photograph. Flexible and lightweight, the circuit is also fully functional.

TDA researchers predict applications for the product that range from flexible television displays and smart cards to antistatic treatments and conducting fabrics.

Oligotron is a trademark of TDA Research, Inc.

Comments from the researchers:

"Through our research we discovered that by attaching molecules to the ends of the PEDOT, the chemical could easily disperse in organic solvents, something we have not seen with typical conducting polymers."– Brian Elliott, Senior Chemical Engineer, TDA Research, Inc.

"When we added photo-sensitive end groups to the Oligotron we created a material that could be printed using an ultraviolet light source. Using a patterned light source resulted in a patterned image that could conduct electricity." – Brian Elliott, Senior Chemical Engineer, TDA Research, Inc.

"We began this research with the goal of developing easier methods to manufacture electronic devices with conducting polymers. We wanted to solve the problems related to the difficulties of dispersing conducting polymers in non-corrosive, organic solvents and create an easy method to print detailed features." – Brian Elliott, Senior Chemical Engineer, TDA Research, Inc.

"We were surprised to discover that the Oligotron could conduct electricity almost as well as the completely non-dispersible, pure form of the PEDOT polymer." – Brian Elliott, Senior Chemical Engineer, TDA Research, Inc.

"The reactive chemical groups on the ends of the Oligotron molecules will allow other scientists to synthesize new molecules, building additional functionality onto the molecule. These molecules will allow chemists to use their creativity to invent new materials with conducting polymers." – Brian Elliott, Senior Chemical Engineer, TDA Research, Inc.

NSF comments regarding the discovery:

"Flat-panel displays are probably the largest market for organic electronic materials. The development of soluble polymers could have a large impact on the cost and ease of processing these displays." – Winslow Sargeant, the NSF program officer who oversees TDA’s award.

"This is a significant breakthrough: a soluble and highly conductive multi-block copolymer, with its ability to be photo-crosslinked, could lead to a printable conducting polymer with a high conductivity."

Josh Chamot | NSF
Further information:
http://www.nsf.gov/od/lpa/newsroom/pr.cfm?ni=73

More articles from Materials Sciences:

nachricht Decoding cement's shape promises greener concrete
08.12.2016 | Rice University

nachricht Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D
08.12.2016 | DOE/Brookhaven National Laboratory

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>