Conjugated thiol linker for enhanced electrical conduction of gold-molecule contacts.
Single-molecule electrical conduction studies are used to evaluate how the molecular linking unit influences the tunneling efficiency in metal-molecule-metal (m-M-m) junctions. This work uses conducting-probe atomic force microscopy (CP-AFM) to compare the molecular conduction of two pi-bonded molecules: one with a single thiol linker, and another with a conjugated double thiol linker at both ends of the molecules. The results demonstrate that the molecule with conjugated double thiol linkers displays higher conduction in gold-molecule-gold junctions than nonconjugated single thiol-gold contacts.
Tivanski
Alexei V
AV
Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA.
He
Yufan
Y
Borguet
Eric
E
Liu
Haiying
H
Walker
Gilbert C
GC
Waldeck
David H
DH