The THz spectra of /spl alpha/,/spl alpha/-trehalose (/spl alpha/-D-glucopyranosyl /spl alpha/-D-glucopyranoside) and /spl alpha/-D-glucose at high resolution were measured. The low-frequency vibrational absorption bands of those compounds in THz region were assigned by density functional calculations with reliable accuracy. The peaks at 60-80 cm/sup -1/ were assigned to torsion modes of hydroxymethyl groups in the extremely complicated THz spectrum of /spl alpha/,/spl alpha/-trehalose. In addition, several polarization-dependent signals from the motion of water molecules in crystal were found.


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    Title :

    The vibrational spectra of trehalose and glucose: terahertz spectroscopy and density functional theory calculations


    Contributors:
    Takahashi, M. (author) / Kawazoe, Y. (author) / Ishikawa, Y. (author) / Ito, H. (author)


    Publication date :

    2005-01-01


    Size :

    1163063 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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