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Issue 35, 2017
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High surface coverage of a self-assembled monolayer by in situ synthesis of palladium nanodeposits

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Abstract

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 IV curves recorded with a conductive-AFM using the Peak Force Tunneling AFM (PF-TUNA™) mode. The IV 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.

Graphical abstract: High surface coverage of a self-assembled monolayer by in situ synthesis of palladium nanodeposits

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Publication details

The article was received on 11 May 2017, accepted on 09 Aug 2017 and first published on 10 Aug 2017


Article type: Paper
DOI: 10.1039/C7NR03365F
Citation: Nanoscale, 2017,9, 13281-13290
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    High surface coverage of a self-assembled monolayer by in situ synthesis of palladium nanodeposits

    L. Herrer, V. Sebastian, S. Martín, A. González-Orive, F. Pérez-Murano, P. J. Low, J. L. Serrano, J. Santamaría and P. Cea, Nanoscale, 2017, 9, 13281
    DOI: 10.1039/C7NR03365F

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