Temperature effect on single chain MEH-PPV spectra
(2004) In Chemical Physics Letters 388(1-3). p.40-45- Abstract
- We report single molecule photoluminescence spectra of poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) in PMMA-matrix at 293 and 20 K with 90 s acquisition time. All spectra at 293 K are very similar, contrary to literature results with acquisition times < 5 s. We propose that fluctuations of conformations with distinct emission properties cause broadening of the spectra and reduce the differences in fluorescence spectra between separate chains. At 20 K the spectrum from a single chain consists of a few narrow peaks with absence of major spectral evolution within tens-of-minutes. The emission from distinct chains is spread over 3000 cm(-1) characterizing different frozen conformations. (C) 2004 Elsevier B.V. All... (More)
- We report single molecule photoluminescence spectra of poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) in PMMA-matrix at 293 and 20 K with 90 s acquisition time. All spectra at 293 K are very similar, contrary to literature results with acquisition times < 5 s. We propose that fluctuations of conformations with distinct emission properties cause broadening of the spectra and reduce the differences in fluorescence spectra between separate chains. At 20 K the spectrum from a single chain consists of a few narrow peaks with absence of major spectral evolution within tens-of-minutes. The emission from distinct chains is spread over 3000 cm(-1) characterizing different frozen conformations. (C) 2004 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/139058
- author
- Rönne, Cecilie LU ; Trägårdh, Johanna LU ; Hessman, Dan LU and Sundström, Villy LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Chemical Physics Letters
- volume
- 388
- issue
- 1-3
- pages
- 40 - 45
- publisher
- Elsevier
- external identifiers
-
- wos:000220727000009
- scopus:1842421195
- ISSN
- 0009-2614
- DOI
- 10.1016/j.cplett.2004.02.068
- 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), Solid State Physics (011013006)
- id
- 1cecf661-a0f8-4a58-b0b1-cf83f5115ed4 (old id 139058)
- date added to LUP
- 2016-04-01 17:05:22
- date last changed
- 2022-03-15 05:05:17
@article{1cecf661-a0f8-4a58-b0b1-cf83f5115ed4, abstract = {{We report single molecule photoluminescence spectra of poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) in PMMA-matrix at 293 and 20 K with 90 s acquisition time. All spectra at 293 K are very similar, contrary to literature results with acquisition times < 5 s. We propose that fluctuations of conformations with distinct emission properties cause broadening of the spectra and reduce the differences in fluorescence spectra between separate chains. At 20 K the spectrum from a single chain consists of a few narrow peaks with absence of major spectral evolution within tens-of-minutes. The emission from distinct chains is spread over 3000 cm(-1) characterizing different frozen conformations. (C) 2004 Elsevier B.V. All rights reserved.}}, author = {{Rönne, Cecilie and Trägårdh, Johanna and Hessman, Dan and Sundström, Villy}}, issn = {{0009-2614}}, language = {{eng}}, number = {{1-3}}, pages = {{40--45}}, publisher = {{Elsevier}}, series = {{Chemical Physics Letters}}, title = {{Temperature effect on single chain MEH-PPV spectra}}, url = {{http://dx.doi.org/10.1016/j.cplett.2004.02.068}}, doi = {{10.1016/j.cplett.2004.02.068}}, volume = {{388}}, year = {{2004}}, }