Surface selection rules for surface-enhanced Raman spectroscopy: calculations and application to the surface-enhanced Raman spectrum of phthalazine on silver

Moskovits, Martin; Suh, Jin Soo

doi:10.1021/j150667a013

Cited by 666 publications

(476 citation statements)

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“…Au NPs with sizes comparable to those of Ag NPs were prepared by aqueous reduction of HAuCl 4 with trisodium citrate according to Frens's method. 41 That 50 mL of 0.01% HAuCl 4 solution was heated to boiling point, and 0.3 mL of 1% trisodium citrate was added. The solution was kept boiling for 5 min.…”

Section: Preparation Of Colloidal Ag Nps and Au Npsmentioning

confidence: 99%

Surface enhanced Raman scattering of p-aminothiophenol self-assembled monolayers in sandwich structure fabricated on glass

Wang

Chen

Dong

et al. 2006

The Journal of Chemical Physics

108

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A sandwich structure consisting of Ag nanoparticles (NPs), p-aminothiophenol (p-ATP) self-assembled monolayers (SAMs), and Ag NPs was fabricated on glass and characterized by surface enhanced Raman scattering (SERS). The SERS spectrum of a p-ATP SAM in such sandwich structure shows that the electromagnetic enhancement is greater than that on Ag NPs assembled on glass. The obtained enhancement factors (EF) on solely one sandwich structure were as large as 6.0±0.62×104 and 1.2±0.62×107 for the 7a and 3b(b2) vibration modes, respectively. The large enhancement effect of p-ATP SAMs is likely a result of plasmon coupling between the two layers of Ag NP (localized surface plasmon) resonance, creating a large localized electromagnetic field at their interface, where p-ATP resides. Moreover, the fact that large EF values (∼1.9±0.7×104 and 9.4±0.7×106 for the 7a- and b2-type vibration modes, respectively) were also obtained on a single sandwich structure of Au NPs∕p-ATPSAMs∕Ag NPs in the visible demonstrates that the electromagnetic coupling does not exist only between Ag NPs but also between Au and Ag NPs. The lower EF values on Au-to-Ag NPs compared to those on Ag-to-Ag NPs demonstrate that the Au-to-Ag coupling must be less effective than the Ag-to-Ag coupling for the induction of SERS in the visible.

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Section: Preparation Of Colloidal Ag Nps and Au Npsmentioning

confidence: 99%

Surface enhanced Raman scattering of p-aminothiophenol self-assembled monolayers in sandwich structure fabricated on glass

Wang

Chen

Dong

et al. 2006

The Journal of Chemical Physics

108

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“…Nonetheless, it has become one of the most powerful spectroscopic techniques for investigating the orientation and the adsorption behavior of molecules on the metal surfaces, because only the adsorbates show their significant Raman scattering enhancement. 6 In addition, the relative enhancement of certain Raman bands in the SERS spectra could be interpreted in relation to the orientation of the polyatomic molecules such as biphenyl derivatives on the surfaces by invoking the surface selection rules, 7,8 even still contradictable.…”

Section: Introductionmentioning

confidence: 99%

Surface-Enhanced Raman Scattering and DFT Study of 4,4'-Biphenyldithiol on Silver Surface

Lee¹,

Kim²,

Kwon

2013

Bulletin of the Korean Chemical Society

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Surfaced-enhanced Raman scattering (SERS) of 4,4'-biphenyldithiol (BPDT) has been investigated at a silver island film. Ordinary Raman (OR) spectra of neat sample in solid state and in basic solution have also been taken for comparison. The spectral feature in the SERS spectrum was similar to that for the OR spectrum in basic solution, except for the broadening of ring stretching bands indicative of the presence of surface-phenyl ring π interaction. In contrast, only absence of the C-H stretching band with very small Raman scattering crosssection seemed not pertinent in judging the definitive orientation of molecule. The observed vibrational bands in the SERS spectrum have been assigned by referring to the normal modes and wavenumbers from density functional theory (DFT) calculations of the simple model as 4,4'-biphenyldithiolates bound to two Ag atoms at the both ends. Excellent agreement between the experimental and the calculated results was achieved, which is remarkable considering the level of theory applied.

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“…The observed difference between RRS and SERRS spectra of Hb is not surprising, and attributed the plasmon enhancement, in SERRS, of vibrational transitions that are weak or even unpronounced in the RRS. 39,40 The SERRS spectrum, discussed above will be in the following compared with the SERROA spectrum of the Hb, and both spectra can be seen in Figure 2a and 21 . Most of these peaks appear in SERROA at the same wavenumber as the corresponding SERRS peaks and, therefore, it is natural to conclude that the SERROA peaks are originated from the heme bonds.…”

Section: Resultsmentioning

confidence: 99%

Novel chiroptical analysis of hemoglobin by surface enhanced resonance Raman optical activity spectroscopy

Brazhe

Sosnovtseva

et al. 2009

Chirality

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The metalloprotein hemoglobin (Hb) was studied using surface enhanced resonance Raman spectroscopy (SERRS) and surface enhanced resonance Raman optical activity (SERROA). The SERROA results are analyzed and compared with the SERRS, and the later to the resonance Raman (RRS) performed on Hb. The SERRS measurements careful optimization, with respect to the concentration and volume ratio of the analyte to colloids, enables for the first time SERROA of this molecule. We observed that the most intense SERROA signals were attributed the m 4 , m 20 , and m 21 vibrations, which are sensitive to the redox state of the heme's iron ion, and to the presence of its sixth site, bound to exogenous ligand; O 2 , NO or CO. However, in this study, the SERROA signals corresponding to these vibrations appear more sensitive to the Hb oxygen-binding properties than they appear in the SERRS or RRS. Moreover, the SER-ROA signal of Hb has successfully been monitored as a function of time, and was observed to be stable for 4-5 min. To our knowledge, the SERROA results of Hb, and its comparison to SERRS and RRS, are here reported for the first time.

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Surface selection rules for surface-enhanced Raman spectroscopy: calculations and application to the surface-enhanced Raman spectrum of phthalazine on silver

Cited by 666 publications

References 0 publications

Surface enhanced Raman scattering of p-aminothiophenol self-assembled monolayers in sandwich structure fabricated on glass

Surface enhanced Raman scattering of p-aminothiophenol self-assembled monolayers in sandwich structure fabricated on glass

Surface-Enhanced Raman Scattering and DFT Study of 4,4'-Biphenyldithiol on Silver Surface

Novel chiroptical analysis of hemoglobin by surface enhanced resonance Raman optical activity spectroscopy

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