Sers excitation profile investigation of a cyanine dye adsorbed on silver colloidal particles
โ Scribed by K. Kneipp; D. Fassler
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 344 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
An excitation profiie investigation of 3,3'diethyl-2.2'-benzthiatrimethinecyanine adsorbed on silver sol shows, for the pure surface enhancement, a relative minimum near thedye absorption (about 550 nm) and a strong increase for yellowred wavelengths, which is esphined qualitatively in terms of an "electromagnetic" model.
๐ SIMILAR VOLUMES
This paper emphasizes the observation of SERS spectra of aniline violet, aniline red, eriochrome black T and phenolphthalein on silver sol and a qualitative explanation of the relationship between SERS spectra and molecular vibrational modes.
The surface of colloidal silver particles sedimented on a cover-glass was used to observe SERS spectra of phthalazine. Two methods were introduced to prepare the surface. Phthalazine was found to be converted photochemically into an adsorbed species resembling an ortho-substituted benzene after clea
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