The first part of this work emphasizes on the synthesis, structural characterization, and liquid crystalline and luminescent properties investigations of novel azomethine and thiophene azomethine polymers. The second part involves, studying the opto-electronic properties of the materials under investigation. Light emitting diodes based on the polymers under study as emitting layer have been prepared. The diode device's characteristics such as current, turn on voltage, and ideality factor have been measured for all PLED device. This book would be of benefit for those who are interested in...