New routes to organometallic molecular junctions: Via a simple thermal processing protocol

Ruben Ezquerra, Samantha G. Eaves, Sören Bock, Brian W. Skelton, Francesc Pérez-Murano, Pilar Cea, Santiago Martín, Paul J. Low

    Research output: Contribution to journalArticleResearch

    7 Citations (Scopus)

    Abstract

    © 2019 The Royal Society of Chemistry. Methods for forming single- and multiple-molecule junctions are key to the development of molecular electronics and the further study of allied electronic and electrical properties of molecules arising from through-molecule charge transport. The organometallic complex trans-Ru(CC-3-C4H3S)(CC-1,4-C6H4CCAuPPh3)(dppe)2 forms well-ordered, densely packed self-assembled monolayers on gold and silver substrates, contacted through the sulfur atoms of the thiophenyl groups. Upon mild thermal treatment (150-200 °C, two hours) the gold moiety decomposes to liberate PPh3 and form quite uniform, disc-shaped gold nanoparticles on top of the organometallic monolayer. The resulting molecular junctions give rise to sigmoidal shaped I-V curves characteristic of through-molecule conductance, rather than linear, ohmic traces associated with metallic contacts (i.e. short circuits). This work therefore demonstrates the feasibility of thermal processing routes to form good quality molecular junctions from organometallic complexes of relatively complex molecular structure capped with uniformly-shaped nanoparticles formed in situ.
    Original languageEnglish
    Pages (from-to)6630-6640
    JournalJournal of Materials Chemistry C
    Volume7
    DOIs
    Publication statusPublished - 1 Jan 2019

    Fingerprint Dive into the research topics of 'New routes to organometallic molecular junctions: Via a simple thermal processing protocol'. Together they form a unique fingerprint.

    Cite this