Title: Spatially heterogeneous dynamics in polymer glasses at room temperature probed by single molecule lifetime fluctuations
Authors: Vallee, RAL ×
Cotlet, Mircea
Hofkens, Johan
De Schryver, Frans #
Issue Date: Oct-2003
Publisher: American Chemical Society
Series Title: Macromolecules vol:36 issue:20 pages:7752-7758
Abstract: Fluorescence lifetime measurements have been performed on single tetraphenoxy-perylenetetracarboxy diimide molecules embedded in two different polymer matrices. Single molecule decay times are found to fluctuate in time as a result of the dye molecule-polymer chains interaction, causing conformational rearrangements of the dye molecule. The rearrangements are shown to take place on a 2 ms time scale at some locations of the dye molecule within the polymer matrix. This behavior illustrates the spatially heterogeneous dynamics present in polymers at room temperature and provides a quantified estimation of the time scales involved in the process.
ISSN: 0024-9297
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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