54 K旋转过渡温度变化在一个 Fe6L4八面体中,由最佳的多个客体诱导
Fan Yin1, Jian Yang1, Li-Peng Zhou1
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China.
Journal of the American Chemical Society
|March 7, 2024
概括
研究人员开发了新的旋转交叉 (SCO) 协调,能够封装多个客人. 封装客人显著改变了SCO旋转过渡温度,证明了分子装置应用的潜力.
科学领域:
- 超分子化学
- 材料科学
- 协调化学
背景情况:
- 旋转交叉 (SCO) 协调对于分子设备来说是有前途的.
- 有限的SCO主机可用性和腔体大小阻碍了主机与客人的互动.
- 多个客户封装对SCO物业的影响在很大程度上尚未被探索.
研究的目的:
- 合成和描述一个新的伪八面体协调 (M6L4).
- 研究这些子的宿主-客体特性,特别是Fe6L4SCO子.
- 探索多个客体封装对SCO转变温度 (T1/2) 的影响.
主要方法:
- 使用三三联体 (L) 和各种金属离子 (ZnII,CoII,FeII,NiII) 组装M6L4协调.
- 在M6L4中封装阿达曼基客体的宿主-客体研究.
- 热力学分析以分离高旋转 (HS) 和低旋转 (LS) 状态的结合亲和力.
主要成果:
- 一个M6L4协调家族的成功合成,包括Fe6L4SCO.
- 这些子已经证明能够封装四个亚当丁基客人.
- 在阿达曼丁封装时观察到Fe6L4的T1/2的创纪录的54K转移,这归因于协同的多客体效应.
- 确定LS状态对客人具有比HS状态更强的结合亲和力.
结论:
- 通过封装多个客户,可以有效调节SCO的旋转过渡温度.
- 铁6L4显示出显著的客媒SCO调制,突出显示了其对分子装置的潜力.
- 这项工作为优化客户在SCO中的控制旋转转变提供了洞察力.
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