Lipid-packaged linear iron(II) triazole complexes in solution: controlled spin conversion via solvophobic self-assembly.
Lipid-packaged linear iron(II) triazole complexes in solution: controlled spin conversion via solvophobic self-assembly.
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DOI：
10.1021/ja711355j
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发表时间：
2008-04
影响因子：
15
通讯作者：
Hiroyuki Matsukizono;K. Kuroiwa;N. Kimizuka
中科院分区：
文献类型：
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作者：
Hiroyuki Matsukizono;K. Kuroiwa;N. Kimizuka
本文报道了一种新型的线性Fe（II）1，2，4-三唑配合物。这些配合物在甲苯中表现出尖锐和可逆的自旋转换，温度显著高于（20-100 K）在结晶状态下观察到的自旋交叉温度。这是占在有机介质中，这是由带电的配位链的疏溶剂压实所造成的金属-配体相互作用的增加。在原子力显微镜，发达的纳米线观察到低自旋（LS）的配合物。另一方面，碎片化的纳米结构被视为高自旋（HS）复合物，表明在溶液中的自旋转换是由自组装过程。因此，带电荷的配位链的脂质包装提供了强有力的手段，通过疏溶剂自组装来改善和调节它们的功能。
Linear Fe(II) 1,2,4-triazole complexes with lipid counteranions are newly developed. These complexes show sharp and reversible spin conversion in toluene, with temperatures significantly higher (by 20-100 K) than the spin crossover temperatures observed in the crystalline states. This is accounted for in terms of increased metal-ligand interactions in organic media, which is caused by solvophobic compaction of charged coordination chains. In atomic force microscopy, developed nanowires are observed for low spin (LS) complexes. On the other hand, fragmented nanostructures are seen for high spin (HS) complexes, indicating that the spin conversion in solution is governed by a self-assembly process. The lipid packaging of charged coordination chains thus provides powerful means to improve and regulate their functions via solvophobic self-assembly.