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Fate of Excitations in Conjugated Polymers: Single-Molecule Spectroscopy Reveals Nonemissive "Dark" Regions in MEH-PPV Individual Chains.

Lin, Hongzhen LU ; Tian, Yuxi LU ; Zapadka, Karolina ; Persson, Gustav ; Thomsson, Daniel LU ; Mirzov, Oleg LU orcid ; Larsson, Per-Olof LU ; Widengren, Jerker and Scheblykin, Ivan LU orcid (2009) In Nano Letters 9. p.4456-4461
Abstract
Single chains of the conjugated polymer MEH-PPV (poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene)) were studied with wide-field fluorescence microscopy (dispersion in inert polymer matrices) and with fluorescence correlation spectroscopy (chloroform solution). The fluorescence yield of individual molecules in matrices was found to be 1-2 orders of magnitude lower than that in solution and it decreased substantially with increasing chain length. It suggests that isolation of MEH-PPV molecules in polymer matrices creates favorable conditions for photogeneration of nonemissive primary excited states.
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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nano Letters
volume
9
pages
4456 - 4461
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000272395400086
  • pmid:19860455
  • scopus:71949085507
  • pmid:19860455
ISSN
1530-6992
DOI
10.1021/nl9027473
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: Pure and Applied Biochemistry (LTH) (011001005), Chemical Physics (S) (011001060)
id
28964b91-fde5-4752-8086-7a8bea7f512d (old id 1499916)
date added to LUP
2016-04-01 14:13:35
date last changed
2025-04-04 14:36:26
@article{28964b91-fde5-4752-8086-7a8bea7f512d,
  abstract     = {{Single chains of the conjugated polymer MEH-PPV (poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene)) were studied with wide-field fluorescence microscopy (dispersion in inert polymer matrices) and with fluorescence correlation spectroscopy (chloroform solution). The fluorescence yield of individual molecules in matrices was found to be 1-2 orders of magnitude lower than that in solution and it decreased substantially with increasing chain length. It suggests that isolation of MEH-PPV molecules in polymer matrices creates favorable conditions for photogeneration of nonemissive primary excited states.}},
  author       = {{Lin, Hongzhen and Tian, Yuxi and Zapadka, Karolina and Persson, Gustav and Thomsson, Daniel and Mirzov, Oleg and Larsson, Per-Olof and Widengren, Jerker and Scheblykin, Ivan}},
  issn         = {{1530-6992}},
  language     = {{eng}},
  pages        = {{4456--4461}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Nano Letters}},
  title        = {{Fate of Excitations in Conjugated Polymers: Single-Molecule Spectroscopy Reveals Nonemissive "Dark" Regions in MEH-PPV Individual Chains.}},
  url          = {{http://dx.doi.org/10.1021/nl9027473}},
  doi          = {{10.1021/nl9027473}},
  volume       = {{9}},
  year         = {{2009}},
}