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Photoexcitations of Oligothiophenes with Reduced Conformational Mobility

Published online by Cambridge University Press:  10 February 2011

L. Rossi ,
G. Bongiovanni ,
C. Botta ,
G. Cerullo ,
G. Lanzani ,
A. Mura ,
F. Sannicolo ,
T. Benincori  and
R. Tubino
L. Rossi
Affiliation:
Istituto Nazionale per la Fisica della Materia (Italy). Dipartimento di Fisica “A. Volta,”Università di Pavia, Pavia (Italy).
G. Bongiovanni
Affiliation:
Istituto Nazionale per la Fisica della Materia (Italy). Dipartimento di Scienze Fisiche, Università di Cagliari, Cagliari (Italy).
C. Botta
Affiliation:
Istituto di Chimica delle Macromolecole, CNR, Milano (Italy).
G. Cerullo
Affiliation:
Istituto di Matematica e Fisica, Università di Sassari, Sassari (Italy).
G. Lanzani
Affiliation:
Istituto Nazionale per la Fisica della Materia (Italy). CEQSE-CNR Dipartimento di Fisica, Politecnico di Milano, Milano (Italy).
A. Mura
Affiliation:
Istituto Nazionale per la Fisica della Materia (Italy). Dipartimento di Scienze Fisiche, Università di Cagliari, Cagliari (Italy).
F. Sannicolo
Affiliation:
Dipartimento di Chimica Organica ed Industriale, Università di Milano, Milano (Italy).
T. Benincori
Affiliation:
Dipartimento di Chimica Organica ed Industriale, Università di Milano, Milano (Italy).
R. Tubino
Affiliation:
Istituto Nazionale per la Fisica della Materia (Italy). Dipartimento di Scienza dei Materiali, Università di Milano, Milano (Italy).
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Abstract

We present a comprehensive study of the optical and electronic properties of a series of oligothiophenes in which one or two inter-ring torsional angles have been blocked by chemical bridging. These give us the possibility to investigate the role of the conformational mobility and of the coupling with the inter-ring torsion on the deactivation process of the singlet excited states. We find that both the radiative and the non-radiative deactivation channels are affected by the inter-ring bridging.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 488: Symposium J – Electrical, Optical & Magnetic Properties of Organic IV , 1997 , 127
Copyright
Copyright © Materials Research Society 1998

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References

1. Fichou, D., Horovitz, G., Xu, B., and Gamier, F., Synth. Met 39, p. 243 (1990).Google Scholar
2. Koezura, H., Tsumura, A., Fuchigami, H. and Kuramoto, K., Appl. Phys. Lett., 62 p1794 (1992).Google Scholar
3. Gamier, F., Hajlaoui, R., Yassar, A. and Srivastava, P., Science, 265 p1684 (1994).Google Scholar
4. Dodabalapur, A., Torsi, L. and Katz, H.E., Science, 268 p270 (1995).Google Scholar
5. Bradley, D.D.C., Synth. Met., 54 p401 (1993).Google Scholar
6. Brenna, M.E., Ph.D. Thesis, University of Milan, Italy (1993).Google Scholar
7. Akimichi, H., Waragai, K., Hotta, S., Kano, H., and Sakaki, H., Appl. Phys. Lett. 58, p. 1500 (1991).Google Scholar
8. Chosrovian, H., Rentsch, S., Grebner, D., Dahm, D.U., and Birckner, E., Synth.Met 60, p. 23 (1993).Google Scholar
9. Reyftmann, J.P., Kagan, J., Santus, R., and Moliere, P., Photochem. Photobiol. 41, p. 1 (1985).Google Scholar
10. Becker, R. S., Seixas de Melo, J., Maganita, A.L., and Elisei, F., Pure & Appl. Chem. 67, p. 9 (1995).Google Scholar
11. Lap, D.V., Grebner, D., Rentsch, S., and Naarman, H., Chem. Phys. Lett. 211, p. 135 (1993).Google Scholar
12. Beljonne, D., Cornil, J., Brédas, J.L., and Friend, R.H., Synth. Met. 76, p. 61 (1996).Google Scholar
13. Barbarella, G., Zambianchi, M., Bongini, A., and Antolini, L., Adv. Mater. 5, p. 834 (1993).Google Scholar