High surface coverage of a self-assembled monolayer by: In situ synthesis of palladium nanodeposits

Lucía Herrer, Victor Sebastian, Santiago Martín, Alejandro González-Orive, Francesc Pérez-Murano, Paul J. Low, José Luis Serrano, Jesús Santamaría, Pilar Cea

    Research output: Contribution to journalArticleResearchpeer-review

    10 Citations (Scopus)

    Abstract

    © 2017 The Royal Society of Chemistry. Nascent metal monolayer metal devices have been fabricated by depositing palladium, produced through a CO-confined growth method, onto a self-assembled monolayer of an amine-terminated oligo(phenylene ethynylene) derivative on a gold bottom electrode. The high surface area coverage (85%) of the organic monolayer by densely packed palladium particles was confirmed by X-ray photoemission spectroscopy (XPS) and atomic force microscopy (AFM). The electrical properties of these nascent Au monolayer Pd assemblies were determined from the I-V curves recorded with a conductive-AFM using the Peak Force Tunneling AFM (PF-TUNA™) mode. The I-V curves together with the electrochemical experiments performed rule out the formation of short-circuits due to palladium penetration through the monolayer, suggesting that the palladium deposition strategy is an effective method for the fabrication of molecular junctions without damaging the organic layer.
    Original languageEnglish
    Pages (from-to)13281-13290
    JournalNanoscale
    Volume9
    Issue number35
    DOIs
    Publication statusPublished - 21 Sep 2017

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