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Orlov, S. V. ; Naumov, Andrei V. ; Vainer, Yuri G. ; Kador, Lothar:
Spectrally Resolved Analysis of Fluorescence Blinking of Single Dye Molecules in Polymers at Low Temperatures.
In: The Journal of Chemical Physics.
Bd. 137
(2012)
Heft 19
.
- 194903.
ISSN 0021-9606
DOI: https://doi.org/10.1063/1.4766321
Abstract
We present a method for the spectrally resolved analysis of fluorescence blinking of single quantum emitters. It is based on the well-known technique of repeated recording of single-molecule (SM) fluorescence excitation spectra. The potential of our approach is presented for the example of single tetra-tert-butylterrylene molecules in an amorphous polymer matrix (polyisobutylene), which exhibit fluorescence blinking at cryogenic temperatures. Measuring the spectral dependence of the blinking statistics improves the possibility to clarify the microscopic nature of the dark state(s) of the emitters. We demonstrate how the blinking statistics can be definitely attributed to conformational changes in the local environment of a SM and how the parameters of the corresponding elementary excitations can be measured. The analysis of the blinking statistics as a function of the optical excitation frequency allows us to discriminate between photo-induced and spontaneous transitions into a dark state.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut Forschungseinrichtungen > Forschungszentren > Bayreuther Institut für Makromolekülforschung - BIMF Forschungseinrichtungen Forschungseinrichtungen > Forschungszentren |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften 500 Naturwissenschaften und Mathematik > 530 Physik |
| Eingestellt am: | 26 Mär 2015 16:15 |
| Letzte Änderung: | 27 Jan 2022 12:17 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/8639 |