Preface.- 1 Introduction.- 2 Charge Transport in Liquid Crystalline Semiconductors.- 3 Columnar Liquid Crystalline Semiconductors.- 4 Synthesis of Columnar Liquid Crystals.- 5 Charge Transport in Reactive Mesogens and Liquid Crystal Polymer Networks.- 6 Optical Properties of Liquid Crystals.- 7 Organic Light-Emitting diodes (OLEDs) and OLEDs with Polarised Emission.- 8 Liquid Crystals for Organic Photovoltaics.- 9 Liquid Crystals for Organic Field-Effect Transistors.