Aligned polymers are important in electronic devices such as polymer thin-film transistors (TFTs). Semiconducting conjugated polymer field-effect transistors have potential applications in integrated logic circuits and optoelectronic devices. These aligned polymers are usually parallel-aligned, liquid-crystalline conjugated polymers. The film is deposited onto an alignment layer. Sirringhaus et al developed a method of forming uniaxially aligned polymers by heating the deposited layer to the liquid crystal phase to induce alignment and then rapidly cooling. The polymer may be a polyfluorene homopolymer or a block copolymer.
Roger D. Corneliussen is Professor Emeritus of Materials Engineering, Drexel University in Philadelphia, Pennsylvania, USA. He is editor of Maro Polymer Alerts and the Maro Polymer website (www.maropolymeronline.com). He has been active in SPE since 1962 and has served on the Board of the Philadelphia Section and as SPE Councilor. For Maro Patent Alerts, he reviews all U.S. Patents weekly, makes links to the polymer-related patents, and sends the links daily to subscribers. These patent abstracts are based on the weekly selection process. To sample Maro Patent Alerts, email a request to firstname.lastname@example.org.
|Printer friendly Cite/link Email Feedback|
|Title Annotation:||industry PATENTS|
|Article Type:||Brief article|
|Date:||Mar 1, 2012|
|Previous Article:||Little goes to waste.|
|Next Article:||This makes sense.|