| Autor: |
Andreas Grohmann, Dennis Wiedemann, C. F. Hermanns, Wolfgang Kroener, Wolfgang Kuch, Daniela Rolf, Alex Krüger, Paul Müller, Matthias Bernien |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
The journal of physical chemistry letters. 3(23) |
| ISSN: |
1948-7185 |
| Popis: |
Spin-state switching of transition-metal complexes (spin crossover) is sensitive to a variety of tiny perturbations. It is often found to be suppressed for molecules directly adsorbed on solid surfaces. We present X-ray absorption spectroscopy measurements of a submonolayer of [Fe(II)(NCS)2L] (L: 1-{6-[1,1-di(pyridin-2-yl)ethyl]-pyridin-2-yl}-N,N-dimethylmethanamine) deposited on a highly oriented pyrolytic graphite substrate in ultrahigh vacuum. These molecules undergo a thermally induced, fully reversible, gradual spin crossover with a transition temperature of T1/2 = 235(6) K and a transition width of ΔT80 = 115(8) K. Our results show that by using a carbon-based substrate the spin-crossover behavior can be preserved even for molecules that are in direct contact with a solid surface. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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