Nature of the optical transitions in charged oligothiophenes

Authors

  • Jérôme Cornil,

    1. Service de Chimie des Matériaux Nouveaux Centre de Recherche en Electronique et Photonique Moléculaires Université de Mons-Hainaut Place du Parc 20, B-7000 Mons (Belgium)
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  • Prof. Jean-Luc Brédas

    1. Service de Chimie des Matériaux Nouveaux Centre de Recherche en Electronique et Photonique Moléculaires Université de Mons-Hainaut Place du Parc 20, B-7000 Mons (Belgium)
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  • This work is partly supported by the Commission of European Union ESPRIT project LEDFOS-8013, the Belgian Prime Minister's Office of Science Policy (SSTC) “Programme d'lmpulsion en Technologie de I'Information” and “Pôle d'attraction Interuniversitaire en Chimie Supramoléculaire et Catalyse”, FNRS/FRFC, and an IBM Academic Joint Study. One of us (JC) is Aspirant of the Belgian National Fund for Scientific Research (FNRS).

Abstract

The charge transport and storage mechanisms in π-doped oligothiophenes can be better understood through a more profound knowledge of their optical excitations. These materials have been investigated using a quantum-chemical approach, results which can also be applied to the interpretation of the experimental data reported for other conjugated oligomers based on the pyrrole, phenylene and phenylenevinylene systems.

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