Title

Surface plasmon enhancement of two- and three-photon absorption of Hoechst 33 258 dye in activated gold colloid solution

Authors

Authors

I. Cohanoschi;F. E. Hernandez

Comments

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Abbreviated Journal Title

J. Phys. Chem. B

Keywords

PHOTODYNAMIC THERAPY AGENTS; RAMAN-SCATTERING; SINGLET OXYGEN; 2ND-HARMONIC GENERATION; FLUORESCENCE MICROSCOPY; OPTICAL-CONSTANTS; PARTICLE-SIZE; NEAR-IR; EXCITATION; NANOPARTICLES; Chemistry, Physical

Abstract

Herein we present experimental evidence of the strong surface plasmon enhancement of two-and three-photon absorption of Hoechst 33 258 (2'-(4-hydrophenyl)-5-(4-methyl-1-piperazinyl)-2,5'-bis(1H-benzimidazole)) pentahydrate in an aqueous solution containing activated gold colloid. The 480-fold enhancement in two-photon absorption and 30-fold in three-photon absorption are predominantly attributed to the electricfield enhancement via surface plasmon resonance. The greater enhancement observed in two-photon absorption is due to the characteristic two- and three-photon absorption cross-sections of the dye.

Journal Title

Journal of Physical Chemistry B

Volume

109

Issue/Number

30

Publication Date

1-1-2005

Document Type

Article

DOI Link

http://dx.doi.org/10.1021/jp0508958

Language

English

First Page

14506

Last Page

14512

WOS Identifier

WOS:000230896500040

ISSN

1520-6106

Recommended Citation

"Surface plasmon enhancement of two- and three-photon absorption of Hoechst 33 258 dye in activated gold colloid solution" (2005). Faculty Bibliography 2000s. 5077.
https://stars.library.ucf.edu/facultybib2000/5077