PPV, Eck

ene) (PPV) by Burroughes et al. [7]. Among a variety of con-jugated polymers [8,9], derivatives of poly(p-phenylene) PPP and PPV have been thoroughly investigated in light-The attachment of conformationally mobile, relatively long and flexible side chains to the polymer backbone is a com-mon technique and has been important as it allows the controlled synthesis of fusible and soluble rigid-rod conju-gated polymers. Besides enabling the solubility and the subsequent processability, the grafted side chains play an important role in the ordering of self assembly and they can also lead to changes in optical and electroni