Optical and electrical properties of conjugated oligo(arylenes)

New conductive soluble oligo(p-phenylene), oligo(thiophene), oligo(p-phenyl ene-thiophene) (4 : 1) (1 : 1) (1 : 4), oligo(p-phenylene-sulphide), oligo( p-phenylene-selenide), oligo(p-diphenylene-sulphide) and oligo(p-diphenylen e selenide) were synthesized. Structural, optical and electrical characteri stics of these oligomers have been determined. The optical and electrical p roperties are dependent on the oligomers' structures. The conductivities of these oligomers are low, between 10(-4) and 10(-12) S m(-1). However, ther e is an increase after doping them with iodine. These soluble oligomers can be used for production of active components in opto-electronic devices. (C ) 2000 Kluwer Academic Publishers.