SIMPLE POLY(P-XYLYLENE)S AS PRECURSOR POLYMERS FOR POLY(P-PHENYLENEVINYLENE)S AND SEGMENTED POLY(P-PHENYLENEVINYLENE)S - SYNTHESIS, POLYMERANALOGOUS REACTIONS, AND THERMAL AND OPTICAL-PROPERTIES

The preparation of a high molecular weight soluble derivative of poly( p-xylylene) by vapor phase pyrolysis followed by chemical vapor deposi tion (CVD) and its dehydrogenation with 1,2-dichloro-3,4-dicyanoquinon e (DDQ) to yield the corresponding derivative of poly(phenylenevinylen e) is reported. Derivatives of poly(phenylenevinylene)s with nonconjug ated segments were prepared by partial dehydrogenation with substoichi ometric amounts of DDQ. The thermal and optical properties of segmente d and nonsegmented poly(p-phenylenevinylene)s are compared as well as their electroluminescence properties with particular focus on the quan tum yields.