Crosslinkable hole- and electron-transport materials for application in organic light emitting devices (OLEDs)

Abstract

Organic light emitting devices (OLEDs) are one of the most promising alternatives to liquid crystal displays (LCDs) concerning flat panel display applications. The OLED technique is based on organic semiconductors used either as hole- or electron transporting materials or as emitter. Working on common problems in OLED preparation, performance and life time, novel and improved charge transport molecules and polymers of triarylamine- and poly(para-phenylene)type are introduced. This includes: (1) cyclic triarylamine-derivatives with enhanced glass transition temperature; (2) triarylamine based low molecular mass hole transport molecules and hole transport polymers with pendant oxetane groups for processing out of solution and subsequent crosslinking; and (3) fluorenyl-segmented poly(para -phenylene)s with defined electrochemical properties.