Vibrational spectra of nucleosides studied using terahertz time-domain spectroscopy

We demonstrate that terahertz (THz) time-domain spectroscopy is a powerful technique for measuring temperature-dependent and spatially-resolved vibrational spectra in the frequency range 0.2–3.0 THz. A number of well resolved absorption peaks are observed for poly-crystalline nucleosides, and we hav...

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Bibliographic Details
Published inVibrational spectroscopy Vol. 35; no. 1; pp. 111 - 114
Main Authors Shen, Y.C, Upadhya, P.C, Linfield, E.H, Davies, A.G
Format Journal Article
LanguageEnglish
Published Elsevier B.V 17.06.2004
Subjects
Adenosine
Infrared
Terahertz (THz)
Time-domain
Vibrational spectrum
Adenosine
Infrared
Vibrational spectrum
Time-domain
Terahertz (THz)
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Summary:We demonstrate that terahertz (THz) time-domain spectroscopy is a powerful technique for measuring temperature-dependent and spatially-resolved vibrational spectra in the frequency range 0.2–3.0 THz. A number of well resolved absorption peaks are observed for poly-crystalline nucleosides, and we have mapped the evolution of these absorption features continuously between 4 and 295 K. The resonance frequency is found to shift with temperature and an empirical expression describing this frequency shift is given. In addition, we present spectrally-resolved THz images based on these vibrational modes, accessing both spatial and compositional information of subsurface biochemical materials.
ISSN:0924-2031
1873-3697
DOI:10.1016/j.vibspec.2003.12.004