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Proceedings Paper

Femtosecond and continuous-wave photoexcitations of thiophene-based conjugated polymers
Author(s): Silva Luzzati; Chiara Botta; Mariachiara Romanoni; Davide Comoretto; Riccardo Tubino; Mauro Nisoli; Alessandro Cybo-Ottone; Sandro De Silvestri
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Paper Abstract

We present an extensive photoinduced absorption study of alkyl substituted poly (2,5- thienylenevinylene)s in both the solid state and in solution. The optical and conformational properties of the samples are monitored with UV-Vis absorption and emission, IR absorption and Raman scattering. Three photoinduced states are detected under steady state condition which display lifetimes of the order of 100 ms in the solid state. The two low-energy bands are assigned to bipolarons, while a third band peaked near the band edge has a different origin. In solution very lone-lived photoexcitated states are observed and they are assumed to recombine via a solvent-assisted photo-doping mechanism.

Paper Details

Date Published: 16 December 1993
PDF: 9 pages
Proc. SPIE 2025, Nonlinear Optical Properties of Organic Materials VI, (16 December 1993); doi: 10.1117/12.165283
Show Author Affiliations
Silva Luzzati, Istituto di Chimica delle Macromolecole (Italy)
Chiara Botta, Istituto di Chimica delle Macromolecole (Italy)
Mariachiara Romanoni, Istituto di Chimica delle Macromolecole (Italy)
Davide Comoretto, Univ. di Genova (Italy)
Riccardo Tubino, Univ. di Sassari (Italy)
Mauro Nisoli, Politecnico di Milano (Italy)
Alessandro Cybo-Ottone, Politecnico di Milano (Italy)
Sandro De Silvestri, Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 2025:
Nonlinear Optical Properties of Organic Materials VI
Gustaaf R. Moehlmann, Editor(s)

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