Journal article
Multiple pulse transient spectroscopy in luminescent π-conjugated polymers
Synthetic metals, Vol.116(1), pp.5-7
01/01/2001
DOI: 10.1016/S0379-6779(00)00503-8
Abstract
We closely examined relaxation processes between even and odd parity excitons in poly(
p-phenylene vinylene) derivative polymers using a multiple femtosecond pulse transient spectroscopy. By tuning the energy of re-excitation and probe pulses across a wide spectral range, we were able to measure a complete spectrum of the 1B
u exciton and also probe its counterparts: higher lying mA
g and kA
g excitons. Dramatically different relaxation paths were found for two later states: whereas the majority of mA
g excitons experience an ultrafast internal conversion back to their 1B
u state, most of kA
g excitons transform into a non-emissive state, which we attribute to weakly bound polaron pairs.
Details
- Title: Subtitle
- Multiple pulse transient spectroscopy in luminescent π-conjugated polymers
- Creators
- S.V Frolov - Alcatel-LucentZ Bao - Alcatel-LucentM Wohlgenannt - University of UtahZ.V Vardeny - University of Utah
- Resource Type
- Journal article
- Publication Details
- Synthetic metals, Vol.116(1), pp.5-7
- Publisher
- Elsevier B.V
- DOI
- 10.1016/S0379-6779(00)00503-8
- ISSN
- 0379-6779
- eISSN
- 1879-3290
- Language
- English
- Date published
- 01/01/2001
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428668302771
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