Title

Three-photon absorption of a new series of halogenated fluorene derivatives

Authors

Authors

I. Cohanoschi; M. Garcia; C. Toro; K. D. Belfield;F. E. Hernandez

Comments

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Abbreviated Journal Title

Chem. Phys. Lett.

Keywords

EXCITATION; FLUORESCENCE; ENHANCEMENT; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

Abstract

In this Letter, we report the characterization of the pure three-photon absorption and the measurement of the three-photon absorption cross-section (sigma(3)') of a new series of halogenated fluorene derivatives. The three-photon absorption of these compounds corresponds to the S-0 -> S-1 electronic transition. All four compounds presented here have potential application as photosensitizers in deep photodynamic therapy induced via high order nonlinear absorption. The measurements were done using a tunable OPG pumped by a 25 ps Nd-YAG laser, and performing transmittance vs. input intensity as well as open aperture Z-scan at different wavelengths to determine the highest value of sigma(3)'. (c) 2006 Elsevier B.V. All rights reserved.

Journal Title

Chemical Physics Letters

Volume

430

Issue/Number

1-3

Publication Date

1-1-2006

Document Type

Article

Language

English

First Page

133

Last Page

138

WOS Identifier

WOS:000241446900027

ISSN

0009-2614

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