A surface-enhanced Raman scattering study of CTAB adsorption on copper

Porous Substrates for Label-Free Molecular Level Detection of Nonresonant Organic Molecules

“…Three of them at 1355, 1367, and 1382 cm Ϫ1 with virtually unchanged positions can be assigned to CH 2 wagging vibrations of PEI matrix and CTAB molecules (Figures 6 and 7). 34,35 The last peak which corresponds to a characteristic NO 2 stretching band, showed at unchanged position, 1342 Ϯ 2 cm Ϫ1 at all concentrations ( Figure 7).…”

Analysis of Phospholipid Bilayers on Gold Nanorods by Plasmon Resonance Sensing and Surface-Enhanced Raman Scattering

“…24,29,30,31,32 The CTA + ions are associated with the nanorods through electrostatic attraction to bromide ions that strongly bind the gold surface. 33,34 The bromide ions are also detected by SERS via their vibration at 176 cm -1 , which is significantly enhanced due to the close proximity to the gold surface.…”

Cooperative surface‐enhanced Raman spectroscopy enhancement in Au nanorod/SiO2 nanoparticle solutions

“…The four peaks shown in Figure 1d (1,130, 1,235, 1,400, and 1,450 cm −1 ) correspond to those of AuNRs, and they are originated from CTAB molecules that were used as surfactants for the synthesis of AuNRs. [57] In contrast, the Raman peaks of R6G were strongly enhanced when SiO 2 NPs were added to the aqueous mixture of R6G (10 −8 M) and AuNRs (10 −10 M) ( Figure 1e). As shown in Figure 1e, all peaks of R6G were clearly observable.…”

“…At such low concentration (10 −8 M), R6G peaks were not observed even after addition of AuNRs (10 −10 M) for SERS enhancement (Figure d). The four peaks shown in Figure d (1,130, 1,235, 1,400, and 1,450 cm −1 ) correspond to those of AuNRs, and they are originated from CTAB molecules that were used as surfactants for the synthesis of AuNRs . In contrast, the Raman peaks of R6G were strongly enhanced when SiO 2 NPs were added to the aqueous mixture of R6G (10 −8 M) and AuNRs (10 −10 M) (Figure e).…”