Crystal Structure and Optical Properties of N-Pyrrole End-Capped Thiophene/Phenyl Co-Oligomer: Strong H-type Excitonic Coupling and Emission Self-Waveguiding - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Crystal Growth & Design Année : 2010

Crystal Structure and Optical Properties of N-Pyrrole End-Capped Thiophene/Phenyl Co-Oligomer: Strong H-type Excitonic Coupling and Emission Self-Waveguiding

Résumé

In view of their exploitation in working devices, mainly for their emission properties, the interest in crystals of thiophene/phenylene co-oligomers has recently increased. Here, we describe the strategies for the organic synthesis and crystal growth of a novel oligothiophene-based co-oligomer (thiophene/phenyl co-oligomer end-capped with pyrrole) designed to explore the effect of an electron-rich aromatic ring, such as pyrrole, to end-cap oligothiophenes. The growth by the melted material is also discussed and suggested for implementation in real devices. The UV−visible optical characterization is provided, and the results (absorption and emission excitonic transitions, H-type aggregation, self-waveguiding of the emitted light) are interpreted on the basis of the crystallographic data in the regime of strong intermolecular coupling.
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Dates et versions

hal-00826262 , version 1 (27-05-2013)

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S. Tavazzi, L. Miozzo, L. Silvestri, S. Mora, P. Spearman, et al.. Crystal Structure and Optical Properties of N-Pyrrole End-Capped Thiophene/Phenyl Co-Oligomer: Strong H-type Excitonic Coupling and Emission Self-Waveguiding. Crystal Growth & Design, 2010, 10 (5), pp.2342-2349. ⟨10.1021/cg100113h⟩. ⟨hal-00826262⟩
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