Ultrafast depolarization of the fluorescence in a conjugated polymer
(2005) In Physical Review B (Condensed Matter and Materials Physics) 72(11). p.1-115214- Abstract
- The effect of the extent of electron conjugation on the primary photophysics in semiconducting polymers is reported. A rapid depolarization of photoluminescence and transient absorption, which indicates a reorientation of the transition dipole moment by ~30° on a sub-100 fs time scale, is observed in the fully conjugated polymer poly[2-(2'-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV). In contrast, partially conjugated polymers exhibit a much slower depolarization. The results reveal rapid changes of exciton delocalization in the fully conjugated MEH-PPV driven by structural relaxation.
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https://lup.lub.lu.se/record/157836
- author
- Ruseckas, A ; Wood, P ; Samuel, I D W ; Webster, G R ; Mitchell, W J ; Burn, P L and Sundström, Villy LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 72
- issue
- 11
- pages
- 1 - 115214
- publisher
- American Physical Society
- external identifiers
-
- wos:000232229100081
- scopus:29744467650
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.72.115214
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- 677fae2f-ecd1-41bb-b087-7b61684e6466 (old id 157836)
- date added to LUP
- 2016-04-01 17:01:02
- date last changed
- 2022-03-22 22:40:09
@article{677fae2f-ecd1-41bb-b087-7b61684e6466, abstract = {{The effect of the extent of electron conjugation on the primary photophysics in semiconducting polymers is reported. A rapid depolarization of photoluminescence and transient absorption, which indicates a reorientation of the transition dipole moment by ~30° on a sub-100 fs time scale, is observed in the fully conjugated polymer poly[2-(2'-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV). In contrast, partially conjugated polymers exhibit a much slower depolarization. The results reveal rapid changes of exciton delocalization in the fully conjugated MEH-PPV driven by structural relaxation.}}, author = {{Ruseckas, A and Wood, P and Samuel, I D W and Webster, G R and Mitchell, W J and Burn, P L and Sundström, Villy}}, issn = {{1098-0121}}, language = {{eng}}, number = {{11}}, pages = {{1--115214}}, publisher = {{American Physical Society}}, series = {{Physical Review B (Condensed Matter and Materials Physics)}}, title = {{Ultrafast depolarization of the fluorescence in a conjugated polymer}}, url = {{http://dx.doi.org/10.1103/PhysRevB.72.115214}}, doi = {{10.1103/PhysRevB.72.115214}}, volume = {{72}}, year = {{2005}}, }