Thin films of Prussian blue: sequential assembly, patterning and electron transport properties at the nanometric scale.
We present a new approach for patterning thin films of Prussian blue at the micro- and nano-metric scales. In a first step, a resist was deposited on a gold surface and patterns were generated by photolithography or electron beam lithography. The Prussian blue with idealized formula of KFe(III)[Fe(II)(CN)6] was deposited through the sequential exposure of the patterned surface to a series of solutions containing alternately absorbable Fe3+ cations and [Fe(CN)6]4- anions. These building blocks are gradually associated into dense and continuous films and patterned structures of Prussian blue can be obtained finally by lift-off. This approach was also used to deposit Prussian blue thin films on interdigitated nanoelectrodes and the current-voltage characteristics of this device were investigated.
Laboratoire de Chimie de Coordination, CNRS UPR-8241, 205 Route de Narbonne, 31077 Toulouse, France.
Saioa
S
Cobo
Gábor
G
Molnár
Franck
F
Carcenac
Petra A
PA
Szilágyi
Lionel
L
Salmon
Christophe
C
Vieu
Azzedine
A
Bousseksou
D004553:Electric Conductivity; D004563:Electrochemistry; D005295:Ferrocyanides / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D013499:Surface Properties
D005295:Ferrocyanides; C000170:ferric ferrocyanide