Vibrational dephasing and the Raman non-coincidence effect of CHBr3 in isotopic dilution

Deckert, Volker; Asthana, B. P.; Kiefer, W.; Purucker, H.-G.; Laubereau, A.

doi:10.1002/1097-4555(200008/09)31:8/9<805::aid-jrs575>3.0.co;2-x

Cited by 21 publications

(14 citation statements)

References 32 publications

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“…However, the RNCE has been observed for C-H stretches as well, such as in bromoform (where the magnitude of M ð1Þ IR À M ð1Þ aniso is about 1 cm À1 ) [108]. Interfaces can provide a strong structuring force for molecules without requiring there to be polar or hydrogen-bonding interactions near the oscillators of interest.…”

Section: Interpretation Of Vsfg Spectra In Terms Of the Properties Ofmentioning

confidence: 99%

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Reexamining the interpretation of vibrational sum-frequency generation spectra

Rivera

Fourkas

2011

International Reviews in Physical Chemistry

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Vibrational sum-frequency generation (VSFG) has become a widely used technique for studying molecular orientation and intermolecular structure at interfaces. Due to the interfacial and vibrational selectivity of this technique, it can be used to probe molecular monolayers that are buried within bulk materials. Here, we present a critical review and examination of the assumptions that are generally used in the interpretation of VSFG spectra. This review focuses on three different aspects of VSFG spectroscopy. First, we examine the effect of dynamics (both reorientation and energy transfer) on the interpretation of VSFG spectra. Second, we consider whether (and under what circumstances) VSFG spectra cannot be interpreted solely in terms of the spectral properties of individual molecules. Third, we consider whether VSFG spectra obtained in different modes (frequency-domain, time-domain and broadband) should provide identical information. We conclude with a discussion of the challenges and opportunities provided by the revised viewpoint of VSFG that we present.

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Section: Interpretation Of Vsfg Spectra In Terms Of the Properties Ofmentioning

confidence: 99%

“…In bulk liquids, isotopic dilution studies have been a common method of studying the RNCE [108][109][110]. In a typical liquid, the magnitude of the RNCE scales linearly with concentration, since the effect is dependent on the number of nearest neighbours.…”

Section: Interpretation Of Vsfg Spectra In Terms Of the Properties Ofmentioning

confidence: 99%

Reexamining the interpretation of vibrational sum-frequency generation spectra

Rivera

Fourkas

2011

International Reviews in Physical Chemistry

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show abstract

“…The I iso (x) is the isotropic contribution, which can directly give an idea of the vibrational dephasing time and I aniso (x) is the anisotropic contribution to the Raman line profile due to reorientational motion. This technique has widely been applied to study vibrational dephasing in a large number of associated/non-associated systems and this aspect of Raman spectroscopic technique has frequently been employed, particularly to study the self-associated and hydrogen bonded systems [5,[7][8][9]21,[36][37][38][39][40].…”

Section: Methodsmentioning

confidence: 99%

Clusters of acrylonitrile in methanol/ethanol: A structure–spectra correlation by quantum chemical and polarized Raman study

2011

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“…The I iso (ω) is the isotropic contribution, which is directly related to the vibrational dephasing and I anis (ω) is the anisotropic contribution to the Raman line profile due to reorientational motion. This idea has extensively been applied to study vibrational dephasing in many associated/non-associated systems [28][29][30][31]9]. In recent years, this aspect of Raman spectroscopic technique has frequently been exploited, particularly to study the self-association in hydrogen bonded systems [30,31].…”

Section: Methodsmentioning

confidence: 99%