Poly(2-Methoxy,g-(2'Ethyl-Hexyloxy)-P-Phenylene Vinylene), MEH-PPV, and Methods for Use
BACKGROUND: The possibility of combining the important electronic and optical properties of semiconductors and metals with the attractive mechanical properties and processing advantages of polymers has existed since the discovery of conducting polymers in the late 1970's. However, early attempts resulted in non-processable materials with poor mechanical properties. Improvements in rendering specific conjugated polymer systems soluble made the materials processable, but moderate molecular weights and molecular structures limited their use in applications. Subsequent alternative processing methods have allowed significant chain extension and chain alignment in the resulting conjugated polymers. However, the resultant materials can be prohibitively expensive due to the complex multi-step synthesis procedure.
DESCRIPTION: Scientists at the University of California have developed a new composition of matter that overcomes the aforementioned disadvantages encountered with previous conducting polymers. This new method can produce a conducting polymer capable of being shaped into objects that exhibit the varied color characteristics of conjugated polymers as well as excellent mechanical properties.
APPLICATIONS: This new UC invention has applications in the fabrication of several shaped, highly-colored, photo-luminescent articles, which are conductive after oxidative doping, such as:
* Polymer light-emitting diodes (PLED);
* Optical fibers;
* Halogen sensors.
ADVANTAGES: The new UC technology provides the following benefits:
* Readily soluble at room temperature in a variety of organic solvents;
* Highly-colored (orange-red);
* Rapid doping and undoping rates.
US 5,189,136 [MORE INFO
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