Hostname: page-component-848d4c4894-x24gv Total loading time: 0 Render date: 2024-05-12T02:44:30.666Z Has data issue: false hasContentIssue false
  • English
  • Français

The Agreement of Poly-5,5'-(4,4'-Dinonyl-2,2'Bithiazole) Spectral Signatures to those of Corresponding Oligomers

Published online by Cambridge University Press:  21 March 2011

Wendy M. Blanda ,
Anthony H. Francis  and
M. David Curtis
Wendy M. Blanda
Affiliation:
University of Michigan, Department of Chemistry Ann Arbor, MI 48104, U.S.A
Anthony H. Francis
Affiliation:
University of Michigan, Department of Chemistry Ann Arbor, MI 48104, U.S.A
M. David Curtis
Affiliation:
University of Michigan, Department of Chemistry Ann Arbor, MI 48104, U.S.A
Get access

Abstract

Study of the electronic spectra of conjugated oligomers can provide a useful approach to obtain an analysis of the often complicated spectra of their corresponding polymers. One advantage of studying oligomers is that there is often a well defined conformational morphology and one may eliminate or reduce the spectral consequences of a distribution of conjugation lengths. In the present work, electronic spectra of some oligomers of poly-5,5'-(4,4'-dinonyl-2,2'bithiazole) were studied, both in solution and in the solid state, and the results compared with spectra of the polymer. For solution data, the plot of molar extinction coefficient vs. the number of double bonds is found to be linear, as is the Kuhn plot. This is consistent with quantum-chemical molecular modeling calculations, and closely resembles the behavior of other conjugated oligomers, such as polythiophenes and polyenes. However, the solid state spectra exhibit a large red shift in both absorption and emission. These and other results suggest the presence of strong intermolecular interactions in the solid state that significantly modify the magnitude of the homo-lumo gap of the oligothiazoles and their polymers. By comparing oligothiazoles in solution to thin film results, polymer behavior is explored.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB11.58
Copyright
Copyright © Materials Research Society 1999

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Tani, T. and Sano, Y., J. Appl. Phys 69 (8), 4391 (1986).Google Scholar
2. Yamamoto, T., Komarudin, D., Arai, M., Lee, B., Suganuma, H., Asakawa, N., Inoue, Y., Kubota, K., Sasaki, S., Fukuda, T., Matsuda, H., J. Am. Chem. Soc. 120, 2047 (1998).Google Scholar
3. Electronic Materials: The Oligomer Approach, edited by Muellen, K. and Wegner, G. (Wiley-VCH, Germany, 1998).Google Scholar
4. Gonzales-Ronda, L., Martin, D.C., Nanos, J.I., Politis, J.K., Curtis, M.D., Macromolecules 32, 4558 (1999).Google Scholar
5. Stewart, J.J. P., J. Comput. Chem. 10, 209 (1989); J.J.P. Stewart, J. Comput. Chem.10, 221 (1989).Google Scholar
6. So, Y.H., Zaleski, J.M., Murlick, C., Ellaboudy, A., Macromolecules, 2783 (1996).Google Scholar
7. Blanda, W.M., Francis, A.H., and Curtis, M.D., The Solid State Spectroscopy of Poly-5,5'-(4-4'-Dinonyl-2,2'Bithiazole); From Oligomers to Polymer, Amer. Chem. Soc. Proc., (in press).Google Scholar
8. Jaffe, H.H., and Orchin, M., Theory and Applications of Ultraviolet Spectroscopy, (Wiley and Sons, 1964).Google Scholar
9. Kuhn, H., J.Chem.Phys., 17, 1198 (1949).Google Scholar
10. Bredas, J.L., Sibley, R., Boudreaux, D.S., Chance, R.R., J. Am. Chem. Soc. 105, 6555 (1983).Google Scholar
11. Cullough, R.D. Mc, Tristram-Nagle, S., Williams, S.P., Jayaraman, M., J. Am. Chem. Soc. 115, 4910 (1993). (b) K.C. Park, K. Levon, Macromolecules 30, 3175 (1997).Google Scholar
12. Yamamoto, T., Honda, K., Ooba, N., Tomaro, S., Macromolecules 31, 7 (1998).Google Scholar
13. Halkyard, C.E., Rampey, M.E., Koppenburg, L., Studer-Martinez, S.L., Bunz, U.H.F., Macromolecules 31, 8655 (1998).Google Scholar