Carbocyanine dyes as efficient reversible single-molecule optical switch

Heilemann M, Margeat E, Kasper R, Sauer M, Tinnefeld P (2005)
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 127(11): 3801-3806.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
We demonstrate that commercially available unmodified carbocyanine dyes such as Cy5 (usually excited at 633 nm) can be used as efficient reversible single-molecule optical switch, whose fluorescent state after apparent photobleaching can be restored at room temperature upon irradiation at shorter wavelengths. Ensemble photobleaching and recovery experiments of Cy5 in aqueous solution irradiating first at 633 nm, then at 337, 488, or 532 nm, demonstrate that restoration of absorption and fluorescence strongly depends on efficient oxygen removal and the addition of the triplet quencher β-mercaptoethylamine. Single-molecule fluorescence experiments show that individual immobilized Cy5 molecules can be switched optically in milliseconds by applying alternating excitation at 633 and 488 nm between a fluorescent and nonfluorescent state up to 100 times with a reliability of > 90% at room temperature. Because of their intriguing performance, carbocyanine dyes volunteer as a simple alternative for ultrahigh-density optical data storage. Measurements on single donor/acceptor (tetramethylrhodamine/Cy5) labeled oligonucleotides point out that the described light-driven switching behavior imposes fundamental limitations on the use of carbocyanine dyes as energy transfer acceptors for the study of biological processes.
Erscheinungsjahr
2005
Zeitschriftentitel
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Band
127
Ausgabe
11
Seite(n)
3801-3806
ISSN
0002-7863
eISSN
1520-5126
Page URI
https://pub.uni-bielefeld.de/record/1604577

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Heilemann M, Margeat E, Kasper R, Sauer M, Tinnefeld P. Carbocyanine dyes as efficient reversible single-molecule optical switch. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. 2005;127(11):3801-3806.
Heilemann, M., Margeat, E., Kasper, R., Sauer, M., & Tinnefeld, P. (2005). Carbocyanine dyes as efficient reversible single-molecule optical switch. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 127(11), 3801-3806. doi:10.1021/ja044686x
Heilemann, M., Margeat, E., Kasper, R., Sauer, M., and Tinnefeld, P. (2005). Carbocyanine dyes as efficient reversible single-molecule optical switch. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 127, 3801-3806.
Heilemann, M., et al., 2005. Carbocyanine dyes as efficient reversible single-molecule optical switch. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 127(11), p 3801-3806.
M. Heilemann, et al., “Carbocyanine dyes as efficient reversible single-molecule optical switch”, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 127, 2005, pp. 3801-3806.
Heilemann, M., Margeat, E., Kasper, R., Sauer, M., Tinnefeld, P.: Carbocyanine dyes as efficient reversible single-molecule optical switch. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. 127, 3801-3806 (2005).
Heilemann, Mike, Margeat, E, Kasper, R, Sauer, Markus, and Tinnefeld, P. “Carbocyanine dyes as efficient reversible single-molecule optical switch”. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 127.11 (2005): 3801-3806.

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