Surface-enhanced Raman scattering and adsorption studies of morphine on silver island film

Peng Wei Li, Jing Zhang, Ling Zhang, Yu Jun Mo

    Research output: Contribution to journalArticle

    21 Citations (Scopus)

    Abstract

    In this work, surface-enhanced Raman spectroscopy (SERS), infrared adsorption (IR), normal Raman (NR) scattering as well as density functional theory (DFT) computational methods have been employed to investigate the adsorption and orientation of morphine on silver surface. The structure of morphine and its vibrational spectra were determined at B3LYP/6-31G(d) level, and the results were used in the assignment of the vibrational spectra. The calculated data showed fairly good agreement with both corresponding experimentally observed spectra. These results, along with the application of surface selection rules of SERS, suggest that the molecules had a charge transfer adsorption on Ag island film and both planes of its 'T' type structure had a rather perpendicular orientation to the substrate mainly via the lone-pair electrons of the oxygens.

    Original languageEnglish
    Pages (from-to)2-6
    Number of pages5
    JournalVibrational Spectroscopy
    Volume49
    Issue number1
    DOIs
    Publication statusPublished - 2009 Jan 22

    Keywords

    • Adsorption orientation
    • Charge transfer
    • DFT
    • Morphine
    • SERS

    ASJC Scopus subject areas

    • Spectroscopy

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