Details

Autor(en) / Beteiligte

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

Titel

New routes to organometallic molecular junctions via a simple thermal processing protocol

Ist Teil von

• Journal of materials chemistry. C, Materials for optical and electronic devices, 2019, Vol.7 (22), p.6630-6640

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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(CC-3-C 4 H 3 S)(CC-1,4-C 6 H 4 CCAuPPh 3 )(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 PPh 3 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 .