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Effect of Ligand Methylation on the Spin-switching Properties of Surface-supported Spin-crossover Molecules by Sascha Ossinger; Lalminthang Kipgen; Holger Naggert; Matthias Bernien; Andrew J Britton; Fabian Nickel; Lucas M Arruda; Ivar Kumberg; Tobias A Engesser; Evangelos Golias; Christian Näther; Felix Tuczek; Wolfgang Kuch is a Physics and Astronomy article available to read on EtoBox.

What is Effect of Ligand Methylation on the Spin-switching Properties of Surface-supported Spin-crossover Molecules about?

X-ray absorption spectroscopy investigations of the spin-state switching of spin-crossover (SCO) complexes adsorbed on a highly-oriented pyrolytic graphite (HOPG) surface have shown so far that HOPG is a promising candidate to realize applications such as spintronic devices because of the stability of SCO complexes on HOPG and the possibility of highly efficient thermal and light-induced spin-state switching. Herein, we present the spin switching of several Fe(II) SCO complexes adsorbed on an HOPG surface with particular emphasis on the thermally induced spin transition behaviour with respect to different structural modifications. The complexes of the type [Fe(bpz)(L)] (bpz = dihydrobis(pyrazolyl)borate, L = 1,10-phenanthroline, 2,2'-bipyridine) and their methylated derivatives exhibit SCO in the solid state with some differences regarding cooperative effects. However, in the vacuum-deposited thick films on quartz, complete and more gradual spin transition behavior is observable via UV/vis spectroscopy. In contrast to that, all complexes show large differences upon direct contact with HOPG. Whereas the unmodified complexes show thermal and light-induced SCO, the addition of e.g

Who reads Effect of Ligand Methylation on the Spin-switching Properties of Surface-supported Spin-crossover Molecules?

Author

Sascha Ossinger; Lalminthang Kipgen; Holger Naggert; Matthias Bernien; Andrew J Britton; Fabian Nickel; Lucas M Arruda; Ivar Kumberg; Tobias A Engesser; Evangelos Golias; Christian Näther; Felix Tuczek; Wolfgang Kuch

Publisher

Institute of Physics; IOP Publishing; Institute of Physics Publishing (ISSN 0953-8984)

Published

2019

Language

EN

Field

Physics and Astronomy (Physical Sciences)