Title | Highly Conductive Poly(phenylene thienylene)s: m -Phenylene Linkages Are Not Always Bad |
Publication Type | Journal Article |
Year of Publication | 2005 |
Authors | Song, C, Swager, TM |
Journal | Macromolecules |
Volume | 38 |
Pagination | 4569–4576 |
Date Published | may |
ISSN | 0024-9297 |
Keywords | polyphenylene polythiophene meta linkage prepn electroactivity acetoxy substituent |
Abstract | Two isomeric polymers, which contain meta- or para-phenylene linkages between conducting segments, were synthesized and compared by electrochem. methods. The nonconjugated poly(1,5-diacetoxy-m-phenylene tetrathienylene) (PMPT-OAc) showed similar electroactivity to the para-isomer, poly(2,5-diacetoxy-p-phenylene tetrathienylene) (PPPT-OAc), in the cyclic voltammetry and in-situ cond. measurements. Spectroelectrochem. showed a similar buildup of sub-band-gap electronic transitions. Deacetylation of the polymers was performed successfully by reaction with hydrazine, producing PMPT-OH and PPPT-OH. Both phenol-substituted polymers exhibited greater electroactivity than the acetoxy-substituted polymers. In addn., the phenol substituents were found to lower the \"turn-on\" potential in the cond.-potential profile for PMPT-OH, but not for PPPT-OH. An alkoxy-substituted PMPT-OMe shows electroactivity similar to that of PMPT-OAc in the cyclic voltammetry, in-situ cond., and spectroelectrochem. [on SciFinder(R)] |
URL | http://pubs.acs.org/doi/abs/10.1021/ma0501702 |
DOI | 10.1021/ma0501702 |