New materials for high efficiency organic light emitting diodes

ORGN 451

Lauren E. Hayden, lauren.hayden@gatech.edu, School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332-0400 and Simon C. Jones, simon.jones@chemistry.gatech.edu, School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332-0400.
The discovery of efficient electro-luminescence in organic and conjugated polymer thin films has led to research in organic light-emitting diodes (OLEDs). Some problems in OLED material development stem from the limited lifetime of the organic materials used in the displays and the performance and durability of blue, green, red, and white OLEDs. We are interested in polymerizable small-molecule materials, which could potentially increase the effectiveness and lifetime of OLEDs. Two potential OLED materials considered here are a phenylenediamine based hole-transport material and a fluorene based host material, each norbornene-functionalized. The phenylenediamine molecule has the potential to be used as a hole-injection layer to improve injection of holes from the anode into the hole-transport layer while the fluorene-based material is based on small molecule analogues that have been shown to be effective hosts for iridium-based phosphors.