Matrix-free synthesis of spin crossover micro-rods showing a large hysteresis loop centered at room temperature

Haonan Peng (1) , Gábor Molnár (1) , L. Salmon (1) , Azzedine Bousseksou (1)

1 LCC - Laboratoire de chimie de coordination

An original simple homogeneous acid medium was used to synthesize polymer/surfactant-free acicular micro-rod particles (10-40 μm long by 0.1-0.3 μm diam.) of the novel [Fe(Htrz)3](CF3SO3)2 complex (Htrz = 1,2,4-triazole). The study of the spin crossover properties reveals a rare 50 K hysteretic behavior perfectly centered at room temp. accompanied by a pronounced thermochromism effect, purple in the low spin state and white in the high spin state.

Domaines: Chimie de coordination

Haonan Peng, Gábor Molnár, L. Salmon, Azzedine Bousseksou. Matrix-free synthesis of spin crossover micro-rods showing a large hysteresis loop centered at room temperature. Chemical Communications, 2015, 51 (45), pp.9346-9349. ⟨10.1039/C5CC02949J⟩. ⟨hal-01923698⟩