RT Journal Article
T1 Molecular resolution friction microscopy of Cuphthalocyanine thin films on dolomite (104) inwater
A1 Nita, Pawel
A1 Pimentel, Carlos
A1 Luo, Feng
A1 Milián-Medina, Begoña
A1 Gierschner, Johannes
A1 Pina Martínez, Carlos Manuel
A1 Gnecco, Enrico
AB The reliability of ultrathin organic layers as active components for molecular electronic devices depends ultimately on an accurate characterization of the layer morphology and ability to withstand mechanical stresses on the nanoscale. To this end, since the molecular layers need to be electrically decoupled using thick insulating substrates, the use of AFM becomes mandatory. Here, we show how friction force microscopy (FFM) in water allows us to identify the orientation of copper(II)phthalocyanine (CuPc) molecules previously self-assembled on a dolomite (104) mineral surface in ultra-high vacuum. The molecular features observed in the friction images show that the CuPc molecules are stacked in parallel rows with no preferential orientation with respect to the dolomite lattice, while the stacking features resemble well the single CuPc crystal structure. This proves that the substrate induction is low and makes friction force microscopy in water a suitable alternative to more demanding dynamic AFM techniques in ultra-high vacuum.
PB Royal Society of Chemistry
SN ISSN: 2040-3364, ESSN: 2040-3372
YR 2014
FD 2014
LK https://hdl.handle.net/20.500.14352/34082
UL https://hdl.handle.net/20.500.14352/34082
LA eng
NO Ministerio de Economía y Competitividad (MINECO)
DS Docta Complutense
RD 9 abr 2025