TY  - JOUR
AU  - Rohlf, Sebastian
AU  - Grunwald, Jan
AU  - Jasper-Toennies, Torben
AU  - Johannsen, Sven
AU  - Diekmann, Florian
AU  - Studniarek, Michał
AU  - Berndt, Richard
AU  - Tuczek, Felix
AU  - Rossnagel, Kai
AU  - Gruber, Manuel
TI  - Influence of Substrate Electronic Properties on the Integrity and Functionality of an Adsorbed Fe(II) Spin-Crossover Compound
JO  - The journal of physical chemistry  / C
VL  - 123
IS  - 29
SN  - 1932-7447
CY  - Washington, DC
PB  - ACS
M1  - PUBDB-2019-02991
SP  - 17774 - 17780
PY  - 2019
N1  - © American Chemical Society
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000477785000016
DO  - DOI:10.1021/acs.jpcc.9b02845
UR  - https://bib-pubdb1.desy.de/record/424560
ER  -