Title

Surface Plasmon Enhancement Of Two- And Three-Photon Absorption Of Hoechst 33 258 Dye In Activated Gold Colloid Solution

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 electric-field 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. © 2005 American Chemical Society.

Publication Date

8-4-2005

Publication Title

Journal of Physical Chemistry B

Volume

109

Issue

30

Number of Pages

14506-14512

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/jp0508958

Socpus ID

23844514799 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/23844514799

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