Cyclic conductance switching in networks of redox-active molecular junctions.
Redox-active dithiolated tetrathiafulvalene derivatives (TTFdT) were inserted in two-dimensional nanoparticle arrays to build interlinked networks of molecular junctions. Upon oxidation of the TTFdT to the dication state, we observed a conductance increase of the networks by up to 1 order of magnitude. Successive oxidation and reduction cycles demonstrated a clear switching behavior of the molecular junction conductance. These results show the potential of interlinked nanoparticle arrays as chemical sensors.
Liao
Jianhui
J
Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056, Basel, Switzerland.
Agustsson
Jon S
JS
Wu
Songmei
S
Schönenberger
Christian
C
Calame
Michel
M
Leroux
Yann
Y
Mayor
Marcel
M
Jeannin
Olivier
O
Ran
Ying-Fen
YF
Liu
Shi-Xia
SX
Decurtins
Silvio
S
D003460:Crystallization / Q000379:methods*; D004553:Electric Conductivity; D006571:Heterocyclic Compounds / Q000737:chemistry*; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010084:Oxidation-Reduction; D010316:Particle Size; D012815:Signal Processing, Computer-Assisted
D006571:Heterocyclic Compounds; C063887:tetrathiafulvalene