Modulation of Spin-Crossover in Metal¿Organic Frameworks by magnetic and non-magnetic ionic-liquid guests
The study focuses on the modulation of the spin-crossover (SCO) behaviour of [Fe(pz)Ni(CN)4] metal-organic framework. This SCO of [Fe(pz)Ni(CN)4] can be influenced by the inclusion of solvents in its pores, but this strategy often compromises the chemical stability of the system due to solvent volatility. To advance this research, the impact of hosting non-volatile ionic liquids (ILs), which can contain diamagnetic/paramagnetic components within the MOF's pores is explored. ILs can modify the SCO behaviour shifting or expanding the temperature range where it occurs, or even partially or fully blocking it. However, determining the precise location of ILs in the MOF's crystal structure is challenging due to it disorderly distribution and the similarity between the X-ray scattering factors of the IL and the host-framework. The objective pursued by this experiment is to uncover the crystal and magnetic structural changes induced by ILs when integrated into MOF, especially above and below the temperatures of the SCO transition. Additionally, the study seeks to identify the ILs' location within the MOF's pores and investigate any magnetic ordering generated at low temperatures.
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Bruna F. Gonçalves; Roberto Fernández de Luis; PORRO AZPIAZU Jose Maria; RIO LOPEZ Natalia Ahiova; RODRIGUEZ VELAMAZAN Jose Alberto and VIDAL MARTIN Elvira. (2024). Modulation of Spin-Crossover in Metal¿Organic Frameworks by magnetic and non-magnetic ionic-liquid guests. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-3011
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