Raman spectroscopy probing of self-assembled monolayers inside the pores of gold nanotube membranes

Leonora Velleman, J.L. Bruneel, F Guillaume, Dusan Losic, Joseph Shapter

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)

    Abstract

    Electroless deposition was used to coat porous alumina membranes with gold. This process reduced the pore diameters and provided a platform suitable for surface modifications with self assembled monolayers (SAMs). The surface enhanced Raman scattering (SERS) effect was employed in order to confirm and characterise the formation of SAMs of 3-mercaptobenzoic acid (mMBA) inside the pores of gold nanotube membranes prepared using porous alumina (PA) templates. The investigation of the coverage and reproducibility of SAMs within porous matrices is of utmost importance in the design of filtration membranes and sensing platforms. Raman spectroscopy is capable of spatially resolved techniques such as mapping which was used to characterise the distribution of mMBA assembly within the pores. Due to the highly ordered structure of porous alumina and well controlled electroless gold deposition, these gold coated membranes have the potential to develop into SERS active substrates for ultrasensitive sensing technologies.

    Original languageEnglish
    Pages (from-to)19587-19593
    Number of pages7
    JournalPhysical Chemistry Chemical Physics
    Volume13
    Issue number43
    DOIs
    Publication statusPublished - 21 Nov 2011

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