A GENERAL-APPROACH TO PRECURSORS FOR POLY(ARYLENE VINYLENE) DERIVATIVES - MECHANISM, SCOPE AND MODIFICATIONS

A new precursor route for poly(arylene vinylene) derivatives will be p resented. In this way non-ionic precursor polymers are obtained which show an enhanced thermal stability and are soluble in organic solvents . This enables a thorough structural characterization and the study of the mechanism. Experiments have been performed to differentiate betwe en a radical or an ionic polymerization mechanism. Furthermore possibi lities to tune solubility characteristics and to introduce defects in the polymer backbone will be discussed. Also the scope for this new ro ute was explored. The first results indicate that the versatility exce eds that of the Wessling route, e.g. the synthesis of precursors for p oly(p-biphenylene vinylene) and poly(2,6-naphthylene vinylene) could b e accomplished in our case, whereas it failed in the case of the Wessl ing route.