Title
Polarization dependent two-photon absorption spectroscopy on a naturally occurring biomarker (curcumin) in solution: A theoretical-experimental study
Date Issued
01 January 2013
Access level
metadata only access
Resource Type
journal article
Author(s)
University of Central Florida
Publisher(s)
Elsevier B.V.
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-heptadi-ene-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. © 2013 Elsevier B.V. All rights reserved.
Start page
160
End page
164
Volume
583
Language
English
OCDE Knowledge area
Óptica
Scopus EID
2-s2.0-84885578210
Source
Chemical Physics Letters
ISSN of the container
00092614
Sponsor(s)
This work was partially supported by the National Science Foundation through Grants Number CHE-0832622 and CHE-0840431 . Tiburcio-Moreno would like to thanks CONACYT Mexico for their financial support through the Ph.D. scholarship program. F.E. Hernandez would like to thank Dr. Sergio Tafur (STOKES ARCC) and Dr. Haining Wang (Chemistry Department), for their assistance in implementing of Dalton 2011 at UCF.
Sources of information:
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