Synthesis and characterization of sulfur-containing PPV derivatives

New sulfur-containing poly(2-hexylthio-5-methoxy-1,4-phenylenevinylene) (PM HPV) and poly(2-hexylsulfinyl-5-methoxy-1,4-phenylenevinylene) (PMHOPV) wer e synthesized through water-soluble precursor route. These polymers were ch aracterized using UV-visible, FT-IR and thermal analyses. The light emittin g devices composed with ITO/polymer films/Al were fabricated and luminescen t properties were characterized. The PMHOPV that contains the electron-acce pting hexylsulfinyl group showed lower electrical conductivity of 1.2 x 10( -4) S/cm than that of PMHPV (9 x 10(-2) S/cm) and maximum EL emission in th e longer wavelength region.