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Probing Photophysical Processes in Individual Multichromophoric Dendrimers by Single-Molecule Spectroscopy
Open accessAbstract
Individual multichromophoric dendrimer molecules, bearing eight perylenecarboximide chromophores at the rim, immobilized in a thin polyvinylbutyral (PVB) film were studied by far-field fluorescence microscopy. Fluorescence intensity trajectories as a function of time (transients), spectra, and decay traces were recorded separately or simultaneously. For comparison, similar measurements have been performed on a model compound containing one perylenecarboximide chromophore. Collective on/off jumps of the fluorescence intensity were observed for single dendrimer molecules, resembling previously reported collective jumps for the emission of single light-harvesting antenna systems. Spectra and decays of both non-interacting and dimer-like interacting chromophoric sites could be distinguished within an individual dendrimer. Transitions between the different spectral forms and decay times, observed for a single molecule, underline the dynamic character of the interactions among the chromophores. Evidence for a stepwise bleaching process of the multichromophoric system was found. Furthermore, the single-molecule data incontestably prove the assumptions stated in the ensemble model.
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Cited by
Ahrens, M. J., Sinks, L. E., Rybtchinski, B., Liu, W., Jones, B. A., Giaimo, J. M., Gusev, A. V., Goshe, A. J., Tiede, D. M., & Wasielewski, M. R. (2004) · Journal of the American Chemical Society · doi:10.1021/ja039820c · Cited by 295
Photoblinking of Rhodamine 6G in Poly(vinyl alcohol): Radical Dark State Formed through the Triplet
Zondervan, R., Kulzer, F., Orlinskii, S. B., & Orrit, M. (2003) · The Journal of Physical Chemistry A · doi:10.1021/jp034723r · Cited by 278
Collective fluorescence switching of counterion-assembled dyes in polymer nanoparticles
Reisch, A., Didier, P., Richert, L., Oncul, S., Arntz, Y., Mély, Y., & Klymchenko, A. S. (2014) · Nature Communications · doi:10.1038/ncomms5089 · Cited by 226
Metadata
- Authors
- Hofkens, J., Maus, M., Gensch, T., Vosch, T., Cotlet, M., Köhn, F., Herrmann, A., Müllen, K., & De Schryver, F.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2000-09-01
- Volume
- 122
- Issue
- 38
- Pages
- 9278-9288
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2082009100
- Cited by
- 241
- References
- 0
- FWCI
- 14.01
- Type
- journal article
- Language
- en
- Open access
- green
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- Hofkens, J., Maus, M., Gensch, T., Vosch, T., Cotlet, M., Köhn, F., Herrmann, A., Müllen, K., & De Schryver, F. (2000). Probing Photophysical Processes in Individual Multichromophoric Dendrimers by Single-Molecule Spectroscopy. Journal of the American Chemical Society. https://doi.org/10.1021/ja0012570
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