Terahertz time-domain and Raman spectroscopy of the sulfur-containing peptide dimers: Low-frequency markers of disulfide bridges

Брандт, Н.Н.; Chikishev, A. Yu.; Kargovsky, A. V.; Назаров, М. М.; Parashchuk, Olga D.; Sapozhnikov, Dmitry; Смирнова, И. Н.; Shkurinov, A. P.; Sumbatyan, N. V.

doi:10.1016/j.vibspec.2008.01.014

Cited by 56 publications

(23 citation statements)

References 30 publications

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“…The tablets of The scheme of the terahertz pulsed spectrometer used in this work is shown in Fig. 1 and is described in detail in [5][6][7]. We used the radiation of a titanium-sapphire laser with a wavelength of 790 nm and a pulse duration of 90 fs.…”

Section: Methodsmentioning

confidence: 99%

Terahertz spectroscopy of biological molecules

Черкасова

Nazarov

Shkurinov

et al. 2009

Radiophys Quantum El

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We study experimentally the absorption and refraction spectra for a number of amino acids, proteins and nucleic acids in the frequency range 0.1-3.5 THz. The characteristic absorption lines are revealed. The spectroscopy of water solutions of proteins and nucleic acids is carried out under conditions of total internal refraction. This method can be used for studies of the functional properties of biomolecules and the dynamics of their interaction.

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Section: Methodsmentioning

confidence: 99%

Terahertz spectroscopy of biological molecules

Черкасова

Nazarov

Shkurinov

et al. 2009

Radiophys Quantum El

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“…9 Note, that a range from 10 to 100 cm −1 corresponds to frequencies of 0.3-3 THz, a region of practical importance for terahertz absorption spectroscopy. For some applications, lowwavenumber Raman measurements may be complimentary 10 or even superior (e.g., in terms of a spatial resolution) to THz-absorption techniques. However, due to various technical limitations, there have so far only been comparatively few Raman studies in the low-wavenumber region and, consequently, the potential of the method remains yet to be fully explored.…”

Section: Introductionmentioning

confidence: 99%

A low-wavenumber-extended confocal Raman microscope with very high laser excitation line discrimination

Lebedkin

Blum

Stürzl

et al. 2011

Review of Scientific Instruments

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We describe the simple modification of a confocal Raman imaging microscope to incorporate two ultra-narrow holographic notch filters. The modified microscope rejects the laser excitation line (Rayleigh peak) by a discrimination factor of ∼10(11) and allows simultaneous measurements of Stokes/anti-Stokes Raman shifts as close as ∼10/20 cm(-1) to the Rayleigh line. The extremely high rejection ratio of the Rayleigh peak results in its intensity becoming comparable to typical Raman scattering signals. This is essential for micro-Raman spectroscopy and imaging in the low-wavenumber region. We illustrate the resulting performance with measurements on silicon/silica, sapphire, sulfur, L-cystine, as well as on single-walled carbon nanotubes (SWNTs). We find that both aggregated (bulk) and individual (deposited on substrate) SWNTs demonstrate strong and broad characteristic Raman features below ∼100 cm(-1)-in a region which has remained essentially unexplored in measurements of bulk SWNT samples and which has so far been inaccessible for Raman spectroscopy of individual SWNTs.

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“…The description of the THz-TDS apparatus is given in [1]. The Raman spectra were recorded in back-scattering geometry with the 514.5 nm Ar + laser excitation with the use of Triple spectrometer Horiba Jobin Yvon T64000 in the micro-Raman geometry.…”

Section: Resultsmentioning

confidence: 99%