Surface-Enhanced Raman Spectroscopy of Dye and Thiol Molecules Adsorbed on Triangular Silver Nanostructures: A Study of Near-Field Enhancement, Localization of Hot-Spots, and Passivation of Adsorbed Carbonaceous Species

Table 1

Some of the most strong Raman modes and corresponding wavenumbers. *Data taken from Bryant and Pemberton [46]. **From Vosgröne and Meixner [20]. ^†From Hildebrandt and Stockburger [47]. ^‡From Nuntawong et al. [48].

Molecule	Raman mode assignment	rel. wavenumber/(cm^−1)
1-Dodecanethiol*	ν(C–S)G	636
	ν(C–S)T	707
	ν(C–C)T	1064–1189
	𝜈(CH2)	2852, 2861
	𝜈(CH3)	2876–2964
Rhodamine 6G**	aromatic modes	614, 1363, 1512, 1575, 1651
	bend. modes	774, 1124
Fluorescein^†	aromatic modes	1176, 1324, 1398, 1548, 1629
Methylene blue^‡	inc. aromatic modes	445, 772, 1155, 1392, 1626