The effect of synthesis procedure on physical properties of poly(p-phenylene vinylene) derivatives

摘要

We have synthesized two poly(p-phenylene viDylenej (PPV) derivatives. The first one consists of a copolymer formed ;., by a random succession of phenylene vinylene and ether groups and the second one is characterized by a pendant side chain containing ether groups hereafter referred to as polyXI and C8-PPV respectively. The polymer's chemical structures were characterized by 13C solid state NMR, FTIR and microanalysis. Thermal and structural prJperties were studied by differen~al scanning calorimetry and X-ray diffraction. The re..- suits were compared to pristine PPV. The effect of pendant side chain was discussed. Moreover, spectroscopic prop- erties were investigated by means of photoluminescence and electron paramagnetic resonance and correlated to the material structure. From these studies we were able to present a possible explanation for the C8-PPV insolubil- ity.