SYNTHESIS AND CHARACTERIZATION OF CONJUGATED, N-DOPABLE, BITHIAZOLE-CONTAINING POLYMERS

Three polymers, (4,4'-dinonyl-5,5'-bithiazole-2,2'-diyl-co-5-tert- but ylphenylene-1,3-diyl) (PBBNBT), 4'-bis(p-dodecylphenyl)-2,2'-bithiazol e-5,5'-diyl) (PDPBT), and 4,4'dinonyl-2,2'-bithiazole-5,5'-diyl-co-eth ylene) (PENBT), have been synthesized. These polymers illustrate the a bility to tune polymer properties around a specific chromophore, in th is case the bithiazole ring system. Alterations of optical properties and solid-state morphology have been made while lie electrochemical be havior characteristic of the bithiazoles, i.e., reversible reduction n ear -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 th e emitting layer in polymer-based LEDs.