New article published in Langmuir !

In this article the structural and magnetic properties of Cu-complex films are investigated using scanning tunneling microscopy and synchrotron spectroscopies.

Article

“Structural and Magnetic Properties of a Drop-Cast C₅₄H₃₄Br₄CuO₄ β‑Diketonato Complex Film on a Graphite Surface.”

E. Velez-Fort, P. Ohresser, M.G. Silly, J. Bonvoisin, F. Silly

Langmuir 39, 14000-14005 (2023).

DOI: https://doi.org/10.1021/acs.langmuir.3c01684

Abstract

The structural and magnetic properties of a drop-cast film of flat C₅₄H₃₄Br₄CuO₄, a β-diketonato complex functionalized with bromine atoms, on a graphite surface are investigated using scanning tunneling microscopy, synchrotron X-ray absorption spectroscopy, and X-ray magnetic circular dichroism. Experimental measurements reveal that the Cu-complexes preferentially lay flat on the graphite surface. The magnetic hysteresis loops show that the organic thin film remains paramagnetic at 2 K with an easy axis of magnetization perpendicular to the graphite surface and is therefore perpendicular to the plane of the Cu-complex skeleton.