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Materials for optoelectronic devices

United States Patent

8,940,411
January 27, 2015
View the Complete Patent at the US Patent & Trademark Office
Energy efficient optoelectronic devices include an electroluminescent layer containing a polymer made up of structural units of formula I and II; ##STR00001## wherein R.sup.1 and R.sup.2 are independently C.sub.22-44 hydrocarbyl, C.sub.22-44 hydrocarbyl containing one or more S, N, O, P, or Si atoms, oxaalkylaryl, or a combination thereof; R.sup.3 and R.sup.4 are independently H, C.sub.1-44 hydrocarbyl or C.sub.1-44 hydrocarbyl containing one or more S, N, O, P, or Si atoms, or R.sup.3 and R.sup.4, taken together, form a C.sub.2-10 monocyclic or bicyclic ring containing up to three S, N, O, P, or Si heteroatoms; and X is S, Se, or a combination thereof.
Shiang; Joseph John (Niskayuna, NY), Smigelski, Jr.; Paul Michael (Glenville, NY)
General Electric Company (Niskayuna, NY)
13/ 093,038
20120267574
April 25, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with Government support under contract number DE-FC26-07NT43226 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.