Title

One - And Two-Photon Stimulated Emission Depletion Of A Sulfonyl-Containing Fluorene Derivative

Abstract

One- and two-photon stimulated emission transitions were investigated by the fluorescence quenching of a sulfonyl-containing fluorene compound, 2,7-bis(4-(phenylsulfonyl)styryl)-9,9-didecyl-9H-fluorene (1), in solution at room temperature using a picosecond pump-probe technique. The nature of stimulated transitions under various fluorescence excitation and quenching conditions was analyzed theoretically, and good agreement with experimental data was demonstrated. Two-photon stimulated transitions S1 → S 0 were shown for 1 at λq ) 1064 nm, representing the first report of two-photon stimulated emission depletion (STED) in a molecular system. The two-photon stimulated emission cross section, δ2PE(λq), of fluorene 1 was estimated to be ∼240-280 GM, suggesting that this compound may be a good candidate for use in two-photon STED microscopy. © 2009 American Chemical Society.

Publication Date

5-21-2009

Publication Title

Journal of Physical Chemistry B

Volume

113

Issue

20

Number of Pages

7101-7106

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/jp902060m

Socpus ID

67650082847 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/67650082847

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