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Proceedings Paper

Photoexcitations of polycarbazolyldiacetylenes in different time domains
Author(s): Davide Comoretto; I. Moggio; Carla Cuniberti; Giovanna Dellepiane; Alessandro Borghesi; Guglielmo Lanzani; S. Stagira; Mauro Nisoli
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Paper Abstract

We report on the photoinduced absorption spectra of polycarbazolydiacetylenes polyDCHD and its soluble analogous polyDCHD-S in a broad time domain ranging from femtosecond to millisecond. Both the blue and red forms of polyDCHD-S are investigated and the results are compared with those of blue polyDCHD. In the blue form of the two polymers charged states are detected in the ms domain in addition to triplet excitons. In the red form of polyDCHD-S only triplets are detected. Femtosecond pump and probe measurements allow us to interpret the generation mechanism of the triplet states as due to singlet excitons fission.

Paper Details

Date Published: 1 December 1997
PDF: 11 pages
Proc. SPIE 3145, Optical Probes of Conjugated Polymers, (1 December 1997); doi: 10.1117/12.279287
Show Author Affiliations
Davide Comoretto, Univ. degli Studi di Genova (Italy)
I. Moggio, Univ. degli Studi di Genova (Italy)
Carla Cuniberti, Univ. degli Studi di Genova (Italy)
Giovanna Dellepiane, Univ. degli Studi di Genova (Italy)
Alessandro Borghesi, INFM/Univ. degli Studi di Modena (Italy)
Guglielmo Lanzani, Univ. degli Studi di Sassari (Italy)
S. Stagira, CNR Politecnico di Milano (Italy)
Mauro Nisoli, CNR Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 3145:
Optical Probes of Conjugated Polymers
Z. Valy Vardeny; Lewis J. Rothberg, Editor(s)

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