Synthesis and characterization of conjugated, n-dopable, bithiazole-containing polymers

Three polymers, poly(4,4'-dinonyl-5,5'-bithiazole-2,2'-diyl-co-5-tert- butylphenylene-1,3-diyl) (PBBNBT), poly(4,4'-bis(p-dodecylphenyl)-2,2'-bithiazole-5,5'-diyl) (PDPBT), and poly(4,4'dinonyl-2,2'-bithiazole-5,5'-diyl-co-ethylene) (PENBT), have been synthesized. These polymers illustrate the ability to tune polymer properties around a specific chromophore, in this case the bithiazole ring system. Alterations of optical properties and solid-state morphology have been made while lie electrochemical behavior characteristic of the bithiazoles, i.e., reversible reduction near -2.0 V and n-dopability resulting in conductivities around 10(2) S/cm, has been maintained. All three polymers have also been used as the emitting layer in polymer-based LEDs.