๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Surface-enhanced hyper-Raman scattering (SEHRS) and surface-enhanced Raman scattering (SERS) by means of mode-locked Ti:sapphire laser excitation

โœ Scribed by H. Kneipp; K. Kneipp; F. Seifert

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
424 KB
Volume
212
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

โœฆ Synopsis

Surface-enhanced hyper-Raman scattering (SEHRS) and surface-enhanced Raman scattering (SERS) using mode-locked Ti: sapphire laser excitation is reported. SEHRS and SERS from crystal violet molecules on colloidal silver were measured using 1 ps laser pulses (82 MHz repetition rate, I .2 W average power) at 800 nm wavelength excitation. This 800 nm excitation allowed simultaneous observation of SEHRS and SERS and a direct comparison of surface-enhancement factors for Raman scattering and hyper-Raman scattering. The ratio between the surface-enhancement factors of SERS and SEHRS for crystal violet on colloidal silver could be explained by different electromagnetic-enhancement conditions for both effects. No evidence exists of different chemical contributions to SERS and SEHRS for this molecule.

๐Ÿ“œ SIMILAR VOLUMES

Near-infrared excitation profile study o
Near-infrared excitation profile study of surface-enhanced hyper-Raman scattering and surface-enhanced Raman scattering by means of tunable mode-locked Ti: sapphire laser excitation
โœ Katrin Kneipp; Harald Kneipp; Frank Seifert ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 430 KB

Excitation profiles of surface-enhanced hyper-Raman scattering (SEHRS) and surface-enhanced Raman scattering (SERS) of crystal violet on colloidal silver were measured using 1 ps Ti:sapphire laser pulses at wavelengths between 750 and 830 nm. Our measurements allowed the direct determination of the

Surface-enhanced Raman scattering (sers)
Surface-enhanced Raman scattering (sers) and surface-enhanced excited-state Raman scattering (seers) of a tris(2,2'-bipyridine)Cr complex adsorbed on colloidal silver
โœ K. Kneipp; H. Kneipp; E. Dinjus ๐Ÿ“‚ Article ๐Ÿ“… 1986 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 434 KB

SJZRS on silver sol has been demonstrated to be an attractive and simple spectroscopic tool for transition-metal complexes. The SERS spectra of [Cr(bpy),)3+ on Ag sol are more similar to the solution Raman spectra of [Fe(bpy)3]2' or [Ru(bpy)3]2' than to that of [Cr(bpy)~])+, which gives a strong hin