Hostname: page-component-7c8c6479df-94d59 Total loading time: 0 Render date: 2024-03-28T21:26:01.017Z Has data issue: false hasContentIssue false

Vibronic Structure of PTCDA Stacks: Monomer-Dimer Equilibrium

Published online by Cambridge University Press:  21 March 2011

Zoltán G. Soos
Affiliation:
Department of Chemistry, Princeton University, Princeton NJ 08544
Margaret H. Hennessy
Affiliation:
Department of Chemistry, Princeton University, Princeton NJ 08544
Vladimir Bulovic
Affiliation:
Department of Electrical Engineering, Princeton University, Prin ceton NJ 08544
Get access

Abstract

Solution spectra of perylenetetracarboxylic dianhydride (PTCDA) show an equilibrium between monomers and dimers, with fluorescence exclusively from monomers and absorption from both. The dimer absorption follows closely the spectrum of PTCDA stacks in crystalline films, which indicate strong coupling to a molecular vibration and mixing of Frenkel and charge-transfer excitons. The same model accounts for solution spectra.

Type
Research Article
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. Forrest, S.R., Ultrathin organic films grown by organic molecular beam deposition and related techniques, Chem. Rev. 97, 17931896 (1997).Google Scholar
2. Hennessy, M.H., Soos, Z.G., Pascal, R.A. Jr., and Girlando, A., Vibronic structure of PTCDA stacks: The exciton-phonon-charge-transfer dimer, Chem. Phys. 245, 199212 (1999); Z.G. Soos and M.H. Hennessy, Modeling PTCDA spectra and polymer excitations, NATO Workshop on Multiphoton and Light Driven Multielectron Processes in Organics: Materials, Phenomena, Applications, Menton, France, 1999 (in press).Google Scholar
3. .Sariciftci, N.S., Primary Photoexcitations in Conjugated Polymers: Molecular Exciton versus Semiconductor Band Model, World Scientific, Singapore 1997.Google Scholar
4. Skotheim, T.A., Elsenbaumer, R.L., and Reynolds, J.R., eds. Handbook of Conducting Polymers, Second Ed., Marcel Dekker, New York, 1998.Google Scholar
5. Bulovic, V., Burrows, P.E, Forrest, S.R., Cronin, A.J. and Thompson, M.E., Study of localized and extended excitons in 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA). 1. Spectroscopic properties of thin films and solutions, Chem. Phys. 210, 112 (1996).Google Scholar
6. Kazmaier, P.M. and Hoffmann, R., A theoretical study of crystallochromy. Quantum interference in the spectra of perylene pigments. J. Amer. Chem. Soc. 116, 9684–91 (1994).Google Scholar
7. Gomez, U., Leonhardt, M., Port, H. and Wolf, H.C., Optical properties of amorphous ultrathin films of perylene derivatives, Chem. Phys. Lett. 268, 16 (1997).Google Scholar
8. Hennessy, M.H., PhD thesis, Princeton University, 2000 (unpublished).Google Scholar