Single chain spectroscopy of conformational dependence of conjugated polymer photophysics

Huser T, Yan M, Rothberg LJ (2000)
Proceedings of the National Academy of Sciences 97(21): 11187-11191.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Huser, ThomasUniBi ; Yan, M; Rothberg, LJ
Abstract / Bemerkung
Single molecule confocal fluorescence microscopy was used to perform photoluminescence spectroscopy on single, isolated molecules of the conjugated polymer poly[2-methoxy,5-(2'-ethylhexyloxy)-p-phenylene-vinylene] (MEH-PPV). We show that the fluorescence from single chains of this electroluminescent polymer depends strongly on chain conformation. The time evolution of the spectra, emission intensity, and polarization all provide direct evidence that memory of the chain conformation in solution is retained after solvent evaporation. Chains cast from toluene solution are highly folded and show memory of the excitation polarization. Exciton funneling to highly aggregated low energy regions causes the chain to mimic the photophysical behavior of a single chromophore. Chains cast from chloroform, however, behave as multichromophore systems, and no sudden discrete spectral or intensity jumps are observed. These also exhibit different spectroscopy from the folded chromophores.
Erscheinungsjahr
2000
Zeitschriftentitel
Proceedings of the National Academy of Sciences
Band
97
Ausgabe
21
Seite(n)
11187-11191
ISSN
0027-8424
eISSN
1091-6490
Page URI
https://pub.uni-bielefeld.de/record/2330816

Zitieren

Huser T, Yan M, Rothberg LJ. Single chain spectroscopy of conformational dependence of conjugated polymer photophysics. Proceedings of the National Academy of Sciences. 2000;97(21):11187-11191.
Huser, T., Yan, M., & Rothberg, L. J. (2000). Single chain spectroscopy of conformational dependence of conjugated polymer photophysics. Proceedings of the National Academy of Sciences, 97(21), 11187-11191. doi:10.1073/pnas.97.21.11187
Huser, T., Yan, M., and Rothberg, L. J. (2000). Single chain spectroscopy of conformational dependence of conjugated polymer photophysics. Proceedings of the National Academy of Sciences 97, 11187-11191.
Huser, T., Yan, M., & Rothberg, L.J., 2000. Single chain spectroscopy of conformational dependence of conjugated polymer photophysics. Proceedings of the National Academy of Sciences, 97(21), p 11187-11191.
T. Huser, M. Yan, and L.J. Rothberg, “Single chain spectroscopy of conformational dependence of conjugated polymer photophysics”, Proceedings of the National Academy of Sciences, vol. 97, 2000, pp. 11187-11191.
Huser, T., Yan, M., Rothberg, L.J.: Single chain spectroscopy of conformational dependence of conjugated polymer photophysics. Proceedings of the National Academy of Sciences. 97, 11187-11191 (2000).
Huser, Thomas, Yan, M, and Rothberg, LJ. “Single chain spectroscopy of conformational dependence of conjugated polymer photophysics”. Proceedings of the National Academy of Sciences 97.21 (2000): 11187-11191.

59 Zitationen in Europe PMC

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