Title

Polarization dependent two-photon absorption spectroscopy on a naturally occurring biomarker (curcumin) in solution: A theoretical-experimental study

Authors

Authors

J. A. Tiburcio-Moreno; J. J. Alvarado-Gil; C. Diaz; L. Echevarria;F. E. Hernandez

Comments

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Abbreviated Journal Title

Chem. Phys. Lett.

Keywords

CIRCULAR-LINEAR DICHROISM; IN-VIVO; MOUSE MODEL; DENSITY; CHROMOPHORES; MOLECULES; EXCHANGE; PLAQUES; STORAGE; CELLS; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

Abstract

We report on the theoretical-experimental analysis of the two-photon absorption (TPA) and two-photon circular-linear dichroism (TPCLD) spectra of (1E,6E)-1,7-bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione (curcumin) in Tetrahydrofuran (THF) solution. The measurement of the full TPA spectrum of this molecule reveals a maximum TPA cross-section at 740 nm, i.e. more than 10 times larger than the maximum reported in the literature at 800 nm for the application of curcumin in bioimaging. The TPCLD spectrum exposes the symmetry of the main excited-states involved in the two-photon excitation process. TD-DFT calculations support the experimental results. These outcomes are expected to expand the application of natural-occurring dyes in bioimaging. (C) 2013 Elsevier B.V. All rights reserved.

Journal Title

Chemical Physics Letters

Volume

583

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

160

Last Page

164

WOS Identifier

WOS:000324304600031

ISSN

0009-2614

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