Synthesis of [Fe(hptrz)3](OTs)2 spin crossover nanoparticles in microemulsion

Il’ya A Gural'Skiy (1, 2) , Gábor Molnár (1) , Igor Fritsky (2) , Lionel Salmon (1) , Azzedine Bousseksou (1)

1 LCC - Laboratoire de chimie de coordination
2 Taras Shevchenko National University of Kyiv

Synthesis of the [Fe(hptrz)3](OTs)2 spin crossover nanoparticle samples was performed. Transmission electronic microscopy was used to determine the size and size distribution of the nanoparticle samples for which a size range of 35–70 nm was found – depending on the composition and the stoichiometry of the reverse micelle hexane-tergitol-water system. The factors susceptible to influence the aggregation degree of the nanoparticles, i.e., the starting experimental conditions, the experiment time and the effect of sonication were also studied. In comparison with the bulk powder sample, these nano-materials still exhibit spin crossover near room temperature with a hysteresis loop. The size-properties relationship concerning the present compound and analogue complexes within this family is also discussed.

Mots clés: Spin crossover; Reverse micelles; Nanoparticles; Iron; Triazole

Domaines: Chimie de coordination

Il’ya A Gural'Skiy, Gábor Molnár, Igor Fritsky, Lionel Salmon, Azzedine Bousseksou. Synthesis of [Fe(hptrz)3](OTs)2 spin crossover nanoparticles in microemulsion. Polyhedron, 2012, 38 (1), pp.245-250. ⟨10.1016/j.poly.2012.03.012⟩. ⟨hal-02909912⟩