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Large spectral diffusion of conjugated polymer single molecule fluorescence at low temperature

Mirzov, Oleg LU ; Pullerits, Tönu LU ; Cichos, F ; von Borczyskowski, C and Scheblykin, Ivan LU orcid (2005) In Chemical Physics Letters 408(4-6). p.317-321
Abstract
The conductive polymer poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4- phenylene vinylene) (MEH-PPV) was investigated by means of single molecule spectroscopy at 15 K. MEH-PPV single chains were deposited onto a surface from a toluene solution and covered with a polymer cap layer spin-coated from an aqueous solution for protection from air. The MEH-PPV molecules exhibited large fluorescence spectral diffusion with the range reaching 1000 cm(-1). We concluded that conformational changes, affecting dispersive interactions and conjugation length, is the most probable mechanism of the observed effect. It is the matrix-free environment that allows the MEH-PPV chains to undergo sufficiently large conformational changes even at low temperature. (c) 2005... (More)
The conductive polymer poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4- phenylene vinylene) (MEH-PPV) was investigated by means of single molecule spectroscopy at 15 K. MEH-PPV single chains were deposited onto a surface from a toluene solution and covered with a polymer cap layer spin-coated from an aqueous solution for protection from air. The MEH-PPV molecules exhibited large fluorescence spectral diffusion with the range reaching 1000 cm(-1). We concluded that conformational changes, affecting dispersive interactions and conjugation length, is the most probable mechanism of the observed effect. It is the matrix-free environment that allows the MEH-PPV chains to undergo sufficiently large conformational changes even at low temperature. (c) 2005 Elsevier B.V. All rights reserved. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemical Physics Letters
volume
408
issue
4-6
pages
317 - 321
publisher
Elsevier
external identifiers
  • wos:000229824700026
  • scopus:19744366677
ISSN
0009-2614
DOI
10.1016/j.cplett.2005.04.044
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
47ed3000-a4b4-4cd7-9fdc-cca1d573a289 (old id 151901)
date added to LUP
2016-04-01 17:13:23
date last changed
2022-01-29 01:11:48
@article{47ed3000-a4b4-4cd7-9fdc-cca1d573a289,
  abstract     = {{The conductive polymer poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4- phenylene vinylene) (MEH-PPV) was investigated by means of single molecule spectroscopy at 15 K. MEH-PPV single chains were deposited onto a surface from a toluene solution and covered with a polymer cap layer spin-coated from an aqueous solution for protection from air. The MEH-PPV molecules exhibited large fluorescence spectral diffusion with the range reaching 1000 cm(-1). We concluded that conformational changes, affecting dispersive interactions and conjugation length, is the most probable mechanism of the observed effect. It is the matrix-free environment that allows the MEH-PPV chains to undergo sufficiently large conformational changes even at low temperature. (c) 2005 Elsevier B.V. All rights reserved.}},
  author       = {{Mirzov, Oleg and Pullerits, Tönu and Cichos, F and von Borczyskowski, C and Scheblykin, Ivan}},
  issn         = {{0009-2614}},
  language     = {{eng}},
  number       = {{4-6}},
  pages        = {{317--321}},
  publisher    = {{Elsevier}},
  series       = {{Chemical Physics Letters}},
  title        = {{Large spectral diffusion of conjugated polymer single molecule fluorescence at low temperature}},
  url          = {{http://dx.doi.org/10.1016/j.cplett.2005.04.044}},
  doi          = {{10.1016/j.cplett.2005.04.044}},
  volume       = {{408}},
  year         = {{2005}},
}