基于Fe (II) -Hg (II) 旋转交叉网络的近红外光诱导的旋转状态切换
Guanping Li1,2, Olaf Stefanczyk1, Kunal Kumar1
1Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
Angewandte Chemie (International ed. in English)
|December 11, 2024
概括
一种新的铁(II) 旋转交叉 (SCO) 材料表现出独特的近红外响应光诱导切换. 这一发现为可调节的分子开关和先进材料中的协同效应提供了洞察力.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 固态物理 固态物理
背景情况:
- 具有可调节性质的分子开关对于先进的应用至关重要.
- 旋转交叉 (SCO) 材料提供对磁性和光学状态的动态控制.
- 开发具有独特切换行为的新型SCO材料是一个活跃的研究领域.
研究的目的:
- 为了合成和表征一种新的基于铁的旋转交叉材料.
- 为了研究旋转交叉特性和光引起的现象.
- 探索结构性,磁性和光谱性质中的协同效应.
主要方法:
- 合成和单晶X射线衍射[Fe(4-acpy) 2][Hg(μ-SCN) 4复合体.
- 磁性,Mössbauer,和光磁性测量. 磁性,Mössbauer,和光磁性测量. 磁性,Mössbauer,和光磁性测量. 磁性,Mössbauer,和光磁性测量. 磁性,Mössbauer,和光磁性测量. 磁性,Mössbauer,和光磁性测量. 磁性,Mössbauer,和光磁性测量. 磁性,Mössbauer,和光磁性测量.
- 光晶体学,光学光谱学,太赫兹 (THz) 吸收和初始计算.
主要成果:
- 一个新的3D协调网络[Fe(4-acpy) [2][Hg(μ-SCN) ]被合成,在Pna21空间组中结晶.
- 在Fe2中心观察到一个不完整的旋转交叉过渡,T1/2为~102 K.
- 展示了光诱发激发自旋状态捕获 (LIESST) 和反向LIESST效应,包括独特的近红外响应.
- 温度和光线依赖的THz吸收与SCO行为和声振动相关.
结论:
- 合成的Fe (II) -Hg (II) 系统表现出明显的SCO行为和近红外光可切换性质.
- 光晶体学证实了与LIESST效应相关的转移稳定状态.
- 该材料是探索多功能材料中的协同交换效应的有希望的基准.
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