Publication Date:
2002
Abstract:
Chiral polyalkylthiophenes are noncentrosymmetric organic materials which can be used
both in second harmonic-generation devices and in polarized light emitting diodes. In this work
we present the synthesis and the characterization of a polyalkylthiophene with a chiral center
very close to the conjugated backbone: poly(3-[(S)-2-methylbutyl]thiophene) (PMBT). Circular
dichroism (CD) measurements have been carried out to ascertain the chirality of these materials.
The CD spectra show intense signals both in mixed solvents and in the solid state. The strong
Cotton effect can be associated to a highly ordered aggregated phase whose nature is still under
investigation. We also present the photo and electroluminescence characterization of single layer
light emitting diode (LED) with the following configuration: ITO (Tin Indium Oxide)/PMBT/Al.
both in second harmonic-generation devices and in polarized light emitting diodes. In this work
we present the synthesis and the characterization of a polyalkylthiophene with a chiral center
very close to the conjugated backbone: poly(3-[(S)-2-methylbutyl]thiophene) (PMBT). Circular
dichroism (CD) measurements have been carried out to ascertain the chirality of these materials.
The CD spectra show intense signals both in mixed solvents and in the solid state. The strong
Cotton effect can be associated to a highly ordered aggregated phase whose nature is still under
investigation. We also present the photo and electroluminescence characterization of single layer
light emitting diode (LED) with the following configuration: ITO (Tin Indium Oxide)/PMBT/Al.
CRIS type:
2.1 Contributo in volume (Capitolo o Saggio)
List of contributors:
Lebon, France; Longhi, Giovanna; Abbate, Sergio; Catellani, M.; Luzzati, S.; Bolognesi, A.
Book title:
MRS Symposium Proceedings series - 2002 "Organic Optoelectronic Materials, Processing and Devices"