Abstract
Spin‐crossover (SCO) active transition metal complexes are an important class of switchable molecular materials due to their bistable spin‐state switching characteristics at or around room temperature. Vacuum‐sublimable SCO complexes are a subclass of SCO complexes suitable for fabricating ultraclean spin‐switchable films desirable for applications, especially in molecular electronics/spintronics. Consequently, on‐surface SCO of thin‐films of sublimable SCO complexes have been studied employing spectroscopy and microscopy techniques, and results of fundamental and technological importance have been obtained. This Review provides complete coverage of advances made in the field of vacuum‐sublimable SCO complexes: progress made in the design and synthesis of sublimable functional SCO complexes, on‐surface SCO of molecular and multilayer thick films, and various molecular and thin‐film device architectures based on the sublimable SCO complexes.
Highlights
Vacuum-sublimable SCO complexes are a subclass of SCO complexes 2
Summary and Outlook in the field of vacuum-sublimable SCO complexes: progress made in the design and synthesis of sublimable functional SCO complexes, onsurface SCO of molecular and multilayer thick films, and various molecular and thin-film device architectures based on the sublimable SCO complexes
Quantitative estimation of the cooperativity was achieved by fitting the HS fraction versus T curves shown in Figure 8 a by the Slichter and Drickamer (S-D) model [Eq (1)]
Summary
Vacuum-sublimable SCO complexes are a subclass of SCO complexes 2. (phen)2(NCS)2] is reported elsewhere.[87,88] The complex is SOXIESST active upon soft X-ray irradiation at the iron
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