非对称的Eu (III) 协调聚合物,具有共存的Δ/Λ性和不同的协调几何形状
Mengfei Wang1,2, Yuki Yamazaki3, Sunao Shoji4
1Faculty of Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
Inorganic chemistry
|March 6, 2026
概括
使用芳香配体合成了状欧 ((III) 协调聚合物. 这些聚合物表现出独特的链条排列和双形配置,为循环极化发光应用提供了新的可能性.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 基质材料 基质材料 基质材料
背景情况:
- 嵌合式协调聚合物因其独特的光学特性而引起人们的兴趣.
- 欧洲 (III) 复合物以其发光特性而闻名.
研究的目的:
- 为了合成具有不同芳香桥接联体的新型性Eu(III) 协调聚合物.
- 研究这些材料的结构多样性和循环极化发光 (CPL) 特性.
主要方法:
- 合成了三种奇拉性Eu(III) 协调聚合物:[Eu(+tfc) 3(dpb) ]n,[Eu(+tfc) 3(dpf) ]n,和[Eu(+tfc) 3(dpt) ]n.
- 使用X射线衍射进行结构性表征,以确定链条的排列和配置 (Λ和Δ).
- 对光物理性质和CPL光谱的研究.
主要成果:
- 合成的聚合物表现出不同的结构类型 (A型和B型) 基于桥接联体.
- 类型A结构 ([Eu(+tfc) 3(dpb) ]n和[Eu(+tfc) 3(dpf) ]n) 具有同质链的螺旋排列.
- B型结构 ([Eu(+tfc) 3(dpt) ]n) 显示了异体链的齐克扎克模式.
- 这些聚合物是第一个将双形配置 (Δ 和 Λ) 与不同的协调几何形状 (8-SAP 或 8-TDH) 结合在一起的聚合物.
结论:
- 桥接连体在确定Eu (III) 协调聚合物的高分子结构和奇拉布局方面发挥着至关重要的作用.
- 具有双重配置和几何形状的新型性Eu(III) 协调聚合物显示了先进光学应用的潜力,特别是在循环极化发光中.
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