Spectrochimica Acta Part A: Molecular Spectroscopy
Application of near-IR Fourier transform resonance Raman spectroscopy to the study of photosynthetic proteins
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Vibrational spectroscopy for structural characterization of bioactive compounds
2014, Comprehensive Analytical ChemistryCitation Excerpt :With this technique, the energy of the excited photon matched approximately with the energy required for electronic transition [11]. This technique provided analysis of biological samples without degradation [12], which is usually encountered when lasers near the visible range are used for excitation. Raman spectroscopy has several advantages; for example, the technique is excellently suitable for analysis of alcoholic or aqueous solutions in biological systems and in situ characterization of samples that are not desirable for moisture-sensitive IR spectroscopy.
Raman spectroscopy: Recent advancements, techniques and applications
2011, Vibrational SpectroscopyCitation Excerpt :Resonance Raman scattering has been extensively exploited in the analysis of various chromophoric biological samples like enzymes, various parts of biomolecules and protective pigments of photosynthetic organisms. Similarly, it can also be used for obtaining high quality pre-resonance Raman spectra of bacteriochlorophyll chromophores in photosynthetic proteins from purple bacteria without sample degradation [64]. Discussion and comparison of RRS and normal Raman spectroscopy has been reviewed well.
The calculated in vitro and in vivo chlorophyll a absorption bandshape
2002, Biophysical JournalCitation Excerpt :This mutational-deletion approach opens up the possibility of understanding just how the protein environment modifies the vibronic interactions that determine the absorption bandshape at RT, thus permitting the use of a correct 0–0 and vibrational transitions bandshape in spectral decomposition. Information on the vibrational modes of the electronic ground state of chl molecules, both in solution and in a host matrix, has conventionally been obtained by resonance Raman spectroscopy (Lutz and Breton, 1973; Lutz, 1974, 1977; Fujiwara and Tasumi, 1986a,b; Krawczyk, 1989; Mattioli et al., 1993; Sato et al., 1995). This technique, however, is incapable of reliably detecting the presence of very low-frequency modes (e.g., Cupane et al., 1998) and the intensity of the vibronic contributions are not simply related to the coupling strengths with the electronic transition (Franck–Condon coupling factors).
Fourier transform Raman investigation of the electronic structure and charge localization in a bacteriochlorophyll-bacteriopheophytin dimer of reaction centers from Rhodobacter sphaeroides
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