Surface plasmon enhancement of two- and three-photon absorption of Hoechst 33 258 dye in activated gold colloid solution
Abbreviated Journal Title
J. Phys. Chem. B
PHOTODYNAMIC THERAPY AGENTS; RAMAN-SCATTERING; SINGLET OXYGEN; 2ND-HARMONIC GENERATION; FLUORESCENCE MICROSCOPY; OPTICAL-CONSTANTS; PARTICLE-SIZE; NEAR-IR; EXCITATION; NANOPARTICLES; Chemistry, Physical
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 of Physical Chemistry B
"Surface plasmon enhancement of two- and three-photon absorption of Hoechst 33 258 dye in activated gold colloid solution" (2005). Faculty Bibliography 2000s. 5077.