%0 Journal Article
%A Moors, Marco
%A An, Yun
%A Kuc, Agnieszka
%A Monakhov, Kirill Yu
%T TiO x /Pt 3 Ti(111) surface-directed formation of electronically responsive supramolecular assemblies of tungsten oxide clusters
%J Beilstein journal of nanotechnology
%V 12
%@ 2190-4286
%C Frankfurt, M.
%I Beilstein-Institut zur Förderung der Chemischen Wissenschaften
%M FZJ-2021-06159
%P 203 - 212
%D 2021
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 33728238
%U <Go to ISI:>//WOS:000618878500001
%R 10.3762/bjnano.12.16
%U https://juser.fz-juelich.de/record/904589