TY  - JOUR
AU  - Moors, Marco
AU  - An, Yun
AU  - Kuc, Agnieszka
AU  - Monakhov, Kirill Yu
TI  - TiO x /Pt 3 Ti(111) surface-directed formation of electronically responsive supramolecular assemblies of tungsten oxide clusters
JO  - Beilstein journal of nanotechnology
VL  - 12
SN  - 2190-4286
CY  - Frankfurt, M.
PB  - Beilstein-Institut zur Förderung der Chemischen Wissenschaften
M1  - FZJ-2021-06159
SP  - 203 - 212
PY  - 2021
AB  - Highly ordered titanium oxide films grown on a Pt3Ti(111) alloy surface were utilized for the controlled immobilization and tip-induced electric field-triggered electronic manipulation of nanoscopic W3O9 clusters. Depending on the operating conditions, two different stable oxide phases, z’-TiOx and w’-TiOx, were produced. These phases show a strong effect on the adsorption characteristics and reactivity of W3O9 clusters, which are formed as a result of thermal evaporation of WO3 powder on the complex TiOx/Pt3Ti(111) surfaces under ultra-high vacuum conditions. The physisorbed tritungsten nano-oxides were found as isolated single units located on the metallic attraction points or as supramolecular self-assemblies with a W3O9-capped hexagonal scaffold of W3O9 units. By applying scanning tunneling microscopy to the W3O9–(W3O9)6 structures, individual units underwent a tip-induced reduction to W3O8. At elevated temperatures, agglomeration and growth of large WO3 islands, which thickness is strongly limited to a maximum of two unit cells, were observed. The findings boost progress toward template-directed nucleation, growth, networking, and charge state manipulation of functional molecular nanostructures on surfaces using operando techniques.
LB  - PUB:(DE-HGF)16
C6  - 33728238
UR  - <Go to ISI:>//WOS:000618878500001
DO  - DOI:10.3762/bjnano.12.16
UR  - https://juser.fz-juelich.de/record/904589
ER  -