PHOTOEXCITED STATES IN POLY-3-ALKYLTHIOPHENE SOLUTIONS

Authors
BOTTA C LUZZATI S BOLOGNESI A ELISEI F ALOISI GG
Citation
C. Botta et al., PHOTOEXCITED STATES IN POLY-3-ALKYLTHIOPHENE SOLUTIONS, Synthetic metals, 69(1-3), 1995, pp. 381-382
Citations number
11
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Metallurigical Engineering
Journal title
Synthetic metals → ACNP
ISSN journal
03796779
Volume
69
Issue
1-3
Year of publication
1995
Pages
381 - 382
Database
ISI
SICI code
0379-6779(1995)69:1-3<381:PSIPS>2.0.ZU;2-0
Abstract
We present a study of the photoexcitations of poly-3-alkylthiophene so lutions. Phototransients with lifetimes of 1 mu s-10 ms are observed b y measuring the steady state and transient photoinduccd absorption on a good solvent solution. The long lived photoexcited states are assign ed to charged species which are generated and recombine through a weak reversible polymer-solvent charge-transfer. A short lived photoinduce d band at 1.65 eV is assigned to a dipole allowed triptet-triplet tran sition.