%0 Journal Article
%A Rohlf, Sebastian
%A Grunwald, Jan
%A Jasper-Toennies, Torben
%A Johannsen, Sven
%A Diekmann, Florian
%A Studniarek, Michał
%A Berndt, Richard
%A Tuczek, Felix
%A Rossnagel, Kai
%A Gruber, Manuel
%T Influence of Substrate Electronic Properties on the Integrity and Functionality of an Adsorbed Fe(II) Spin-Crossover Compound
%J The journal of physical chemistry  / C
%V 123
%N 29
%@ 1932-7447
%C Washington, DC
%I ACS
%M PUBDB-2019-02991
%P 17774 - 17780
%D 2019
%Z © American Chemical Society
%X The bistability of spin-crossover complexes on surfaces is of great interest for potential applications. Using X-ray absorption spectroscopy, we investigated the properties of [Fe(pypyr(CF<sub>3</sub>)<sub>2</sub>)<sub>2</sub>(phen)] (pypyr = 2-(2′-pyridyl)pyrrolide, phen = 1,10-phenanthroline), a vacuum-evaporable Fe(II) complex, in direct contact to a set of substrates. The electronic properties of these substrates range from metallic to semiconducting. While dissociation is observed on metal surfaces, efficient light-induced switching is realized on semimetallic and semiconducting surfaces. This indicates that the density of states of the substrate at the Fermi level plays a role for the integrity and functionality of the adsorbed compound. In an intermediate case, namely, [Fe(pypyr(CF<sub>3</sub>)<sub>2</sub>)<sub>2</sub>(phen)] on graphene/Ni(111), functional and dissociated species are found to coexist. This result indicates that some previous studies may deserve to be reconsidered because the possibility of coexisting intact and fragmented spin-crossover complexes was neglected.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000477785000016
%R 10.1021/acs.jpcc.9b02845
%U https://bib-pubdb1.desy.de/record/424560