Yang Xinyu, Bielas Rafal, Collière Vincent, Salmon Lionel, Bousseksou Azzedine
Laboratoire de Chimie de Coordination, CNRS & Université de Toulouse (UPS, INP), 31077 Toulouse, France.
Nanomaterials (Basel). 2025 Jan 9;15(2):90. doi: 10.3390/nano15020090.
Spin crossover (SCO) iron (II) coordination compounds in the form of nanohybrid SCO@SiO particles were prepared using a reverse micelles technique based on the TritonX-100/cyclohexane/water ternary system. Tetraethyl orthosilicate (TEOS) acts as precursor of both the SiF counter-anion and SiO to obtain Fe(NHtrz)(BF)(SiF)@SiO nanoparticles with different sizes and morphologies while modifying the TEOS concentration and reaction time. The adjustable mixed-anion strategy leads to a range of quite scarce abrupt spin crossover behaviors with hysteresis just above room temperature (ca. 293 K), which is very promising for the integration of these materials into functional devices.
采用基于TritonX - 100/环己烷/水三元体系的反胶束技术制备了纳米杂化SCO@SiO颗粒形式的自旋交叉（SCO）铁（II）配位化合物。原硅酸四乙酯（TEOS）作为SiF抗衡阴离子和SiO的前驱体，通过改变TEOS浓度和反应时间来获得具有不同尺寸和形态的Fe(NHtrz)(BF)(SiF)@SiO纳米颗粒。这种可调节的混合阴离子策略导致了一系列非常罕见的在略高于室温（约293K）时具有滞后现象的 abrupt 自旋交叉行为，这对于将这些材料集成到功能器件中非常有前景。
