基于和欧基酸盐的二维协调聚合物
Mariangela Oggianu1,2, Alexandre Abhervé3, Daniela Marongiu4
1Department of Chemical and Geological Sciences, University of Cagliari, Highway 554, Crossroads for Sestu, I-09042 Monserrato, Italy.
Molecules (Basel, Switzerland)
|September 28, 2023
概括
新的二维分层协调聚合物使用兰坦化离子 (Tb和Eu) 和一种新的诺基联体被合成. 这些材料具有独特的结构性质,并有可能被剥落成超薄的纳米薄膜.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 双维 (2D) 协调聚合物由于其多层结构而具有独特的特性.
- 兰化物离子 (LnIII) 对于开发具有特定磁性和光学性质的功能材料至关重要.
- 诺基衍生物作为协调化学中的多功能连接体.
研究的目的:
- 合成和表征新型的2D分层协调聚合物,其中包括兰坦化离子 (和欧) 和异位替代的3--6--2,5-二基子联体 (ClCNAn2-).
- 研究合成的 (Tb) 和欧 (Eu) 化合物及其中间体之间的结构差异.
- 探索由此产生的二维材料的脱皮潜力及其磁性.
主要方法:
- 传统的单合成聚化中间体和从DMSO重新结晶的最终化合物.
- 用X射线粉碎衍射 (XRPD) 进行相位识别和结构分析.
- 液体辅助超声波用于2D纳米薄膜的脱皮和原子力显微镜 (AFM) 用于表征.
主要成果:
- 两个系列的LnIII协调聚合物,Ln2(ClCNAn)3(DMSO)6 (1和2) 和Ln2(ClCNAn)3(H2O)x·yH2O (1'和2'),已经成功合成.
- 化合物1 (Tb) 和2 (Eu) 不是同结构的,化合物1具有由3.6拓组成的2D协调框架,形成扭曲的六边形,而化合物2呈现平面,非波纹的2D板.
- 通过脱皮获得化合物1的超薄纳米片,证实了其二维性质. 对化合物1的磁性研究表明,结晶场水平的消散.
结论:
- 该研究报告了新型TbIII和EuIII协调聚合物的成功合成与独特的诺基联体,产生独特的二维分层结构.
- 能够将这些材料剥离成超薄的纳米薄膜的能力为它们在先进的材料科学中的应用开辟了道路.
- Tb和Eu类型之间的结构差异突显了兰坦化离子对框架组装和性能的微妙影响.
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