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Correlation Analysis of Fluorescence Intensity and Fluorescence Anisotropy Fluctuations in Single-Molecule Spectroscopy of Conjugated Polymers.

Thomsson, Daniel LU ; Lin, Hongzhen LU and Scheblykin, Ivan LU (2010) In ChemPhysChem 11. p.897-904
Abstract
Single-molecule spectroscopy techniques are used to investigate time fluctuations of the fluorescence properties of two different types of conjugated polymer, a polythiophene derivative (PDOPT) and a phenylene vinylene derivative (MEH-PPV), at 100 and 293 K. Linear correlation coefficients between fluorescence intensity and polarization are used to characterize fluctuations. We are able to distinguish between different blinking and bleaching effects on the polarization. Furthermore, the polarization data reveal clear differences in the topology of these two polymers, which is related to the ordered conformation of the MEH-PPV. Plots of correlation coefficients appear to be very different for the two polymers and are also very sensitive to... (More)
Single-molecule spectroscopy techniques are used to investigate time fluctuations of the fluorescence properties of two different types of conjugated polymer, a polythiophene derivative (PDOPT) and a phenylene vinylene derivative (MEH-PPV), at 100 and 293 K. Linear correlation coefficients between fluorescence intensity and polarization are used to characterize fluctuations. We are able to distinguish between different blinking and bleaching effects on the polarization. Furthermore, the polarization data reveal clear differences in the topology of these two polymers, which is related to the ordered conformation of the MEH-PPV. Plots of correlation coefficients appear to be very different for the two polymers and are also very sensitive to temperature. These observations prove that correlation analysis is a useful tool to understand fluorescence fluctuations in multi-chromophoric systems. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ChemPhysChem
volume
11
pages
897 - 904
publisher
John Wiley & Sons
external identifiers
  • wos:000276062600023
  • pmid:20087921
  • scopus:77949318711
ISSN
1439-7641
DOI
10.1002/cphc.200900724
language
English
LU publication?
yes
id
39949893-4084-49ff-8d04-1c8e651ad886 (old id 1540782)
date added to LUP
2010-02-03 13:50:04
date last changed
2018-05-29 10:43:35
@article{39949893-4084-49ff-8d04-1c8e651ad886,
  abstract     = {Single-molecule spectroscopy techniques are used to investigate time fluctuations of the fluorescence properties of two different types of conjugated polymer, a polythiophene derivative (PDOPT) and a phenylene vinylene derivative (MEH-PPV), at 100 and 293 K. Linear correlation coefficients between fluorescence intensity and polarization are used to characterize fluctuations. We are able to distinguish between different blinking and bleaching effects on the polarization. Furthermore, the polarization data reveal clear differences in the topology of these two polymers, which is related to the ordered conformation of the MEH-PPV. Plots of correlation coefficients appear to be very different for the two polymers and are also very sensitive to temperature. These observations prove that correlation analysis is a useful tool to understand fluorescence fluctuations in multi-chromophoric systems.},
  author       = {Thomsson, Daniel and Lin, Hongzhen and Scheblykin, Ivan},
  issn         = {1439-7641},
  language     = {eng},
  pages        = {897--904},
  publisher    = {John Wiley & Sons},
  series       = {ChemPhysChem},
  title        = {Correlation Analysis of Fluorescence Intensity and Fluorescence Anisotropy Fluctuations in Single-Molecule Spectroscopy of Conjugated Polymers.},
  url          = {http://dx.doi.org/10.1002/cphc.200900724},
  volume       = {11},
  year         = {2010},
}