title: Ordered heteromolecular overlayers formed by metal phthalocyanines and porphyrins on rutile titanium dioxide surface studied at room temperature.
abstract: Molecular heterostructures are formed from meso-tetraphenyl porphyrins-Zn(II) (ZnTPP) and Cu(II)-phthalocyanines (CuPc) on the rutile TiO2(011) surface. We demonstrate that ZnTPP molecules form a quasi-ordered wetting layer with flat-lying molecules, which provides the support for growth of islands comprised of upright CuPc molecules. The incorporation of the ZnTPP layer and the growth of heterostructures increase the stability of the system and allow for room temperature scanning tunneling microscopy (STM) measurements, which is contrasted with unstable STM probing of only CuPc species on TiO2. We demonstrate that within the CuPc layer the molecules arrange in two phases and we identify molecular dimers as basic building blocks of the dominant structural phase.
authors.affiliation: Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, ul. S. Łojasiewicza 11, 30-348 Krakow, Poland.
authors.forename: Łukasz
authors.initials: Ł
authors.lastname: Zając
authors.affiliation: Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, ul. S. Łojasiewicza 11, 30-348 Krakow, Poland.
authors.forename: Piotr
authors.initials: P
authors.lastname: Olszowski
authors.affiliation: Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, ul. S. Łojasiewicza 11, 30-348 Krakow, Poland.
authors.forename: Szymon
authors.initials: S
authors.lastname: Godlewski
authors.affiliation: Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, ul. S. Łojasiewicza 11, 30-348 Krakow, Poland.
authors.forename: Bartosz
authors.initials: B
authors.lastname: Such
authors.affiliation: Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.
authors.forename: Res
authors.initials: R
authors.lastname: Jöhr
authors.affiliation: Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.
authors.forename: Rémy
authors.initials: R
authors.lastname: Pawlak
authors.affiliation: Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.
authors.forename: Antoine
authors.initials: A
authors.lastname: Hinaut
authors.affiliation: Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.
authors.forename: Thilo
authors.initials: T
authors.lastname: Glatzel
authors.affiliation: Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland.
authors.forename: Ernst
authors.initials: E
authors.lastname: Meyer
authors.affiliation: Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, ul. S. Łojasiewicza 11, 30-348 Krakow, Poland.
authors.forename: Marek
authors.initials: M
authors.lastname: Szymonski