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Title: Direct measurement of the end-to-end distance of individual polyfluorene polymer chains
Authors: Muls, B ×
Uji-I, Hiroshi
Melnikov, Sergey
Moussa, A
Verheijen, W
Soumillion, JP
Josemon, J
Mullen, K
Hofkens, Johan #
Issue Date: Nov-2005
Publisher: Wiley-v c h verlag gmbh
Series Title: Chemphyschem vol:6 issue:11 pages:2286-2294
Abstract: Wide-field imaging of individual multichromophoric molecules and successive photobleaching were used to determine, accurately, the relative position of the chromophores in such systems. First, a polyphenylene dendrimer with well-defined geometry was used to establish the accuracy in localization that can be obtained by this methodology. For a signal-to-noise ratio of 20, interchromophoric distances could be measured with 4 nm accuracy. Next, the method was used to determine the end-to-end distribution of an end-capped polyfluorene polymer. From comparison between the experimental and simulated distributions, information on the conformation of the polymer could be deduced. It was found that the polymer has a nonlinear conformation. A conjugation length of six monomer units gave the best fit of the experimental data to the proposed model.
URI: 
ISSN: 1439-4235
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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