Synthesis of Certain Specific Electroactive Polymers
Among the many synthetic challenges in electroactive polymers we consider here those which we believe are the most important: (a) to prepare polymers which have a very small semiconductor bandgap and (b) to prepare polymers which are soluble and hence fabricable. In this presentation we describe our efforts as well as those of others to achieve these goals.
KeywordsQuartz Benzene Acetonitrile CDCl3 Phenyl
Unable to display preview. Download preview PDF.
- 4.F. Wudl, M. Kobayashi, N. Colaneri, M. Boysel, and A. J. Heeger, Mol. Crvst. Liq. Crvst. 118:195 (1985).Google Scholar
- 5.S. A. Jenekhe, Nature 322:345 (1986). Note that in this case fusing both "quinoid" and "benzenoid" forms "statically" into the same backbone gives rise to a macromolecule with a degenerate ground state (analogous to polyacetylene) but cannot give a zero bandgap because the same bond alternation that exists in polyacetylene also exists in this case.Google Scholar
- 7a. M. P. Cava, N. M. Pollak, O. A. Mamer, and M. J. Mitchell, J. Org. Chem. 36:3932 (1971); J. Bornstein and R. P. Hardy J. Chem. Soc. Chem. Commun. 612 (1972).Google Scholar
- 10.S. A. Jenekhe, Polym. Preprints 1986, 74.Google Scholar
- 11.A. O Patil and F. Wudl, Polym. Preprints 1987, in pressGoogle Scholar
- 12.In references 7 and 8 it is claimed that polymer 3 is blue with a A,max of 692nm and a bandgap of 810nm (1.53 eV). The pure polymer is actually off white with A,max of 332nm and a hint of absorption in the 700- 800nm region (cf Fig. 2), indicating a small degree of unsaturation. However, both pure and impure polymers show qualitatively the same electronic spectroscopy behavior when brominated (the former less dramatically so than the latter).Google Scholar