1-, 2- and 3-dimensional phenylene-based materials for optoelectronic applications [Elektronische Ressource] / vorgelegt von Luke D. Oldridge

‘1-, 2- and 3-Dimensional Phenylene-based Materials for Optoelectronic Applications’ Dissertation zur Erlangung des Grades „Doktor der Naturwissenschaften“ am Fachbereich Chemie, Pharmazie und Geowissenschaften der Johannes Gutenberg-Universität Mainz Vorgelegt von Luke D. Oldridge Geb. in Dunedin, New Zealand Mainz 2005 i ii iiiiv v vi 1 INTRODUCTION................................................................................................1 1.1 General introduction............................................................................1 1.2 Conjugated Polymers.....................................2 1.2.1 Phenylene as the backbone-Poly(para-phenylene) derivatives..............4 1.3 Organic Light Emitting Diodes............................................................8 1.3.1 Introduction....................................................................8 1.3.2 Multilayer OLED’s.....................................................12 1.3.3 Electron transporting materials............................................................14 1.3.4 Blue emission from OLED’s ................18 1.3.5 Long wavelength emission: excimers or defects? ...............................22 1.4 Oligomers-linear conjugated segments........................................................27 1.5 Columnar bypass-sidestepping the defects ..........................29 1.5.