• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >A SIM-MOF: Three-Dimensional Organisation of Single-Ion Magnets with Anion-Exchange Capabilities
【24h】

A SIM-MOF: Three-Dimensional Organisation of Single-Ion Magnets with Anion-Exchange Capabilities

机译：SIM-MOF：具有阴离子交换功能的单离子磁体的三维组织

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The formation of a metal-organic framework (MOF) with nodes that have single-molecule magnet (SMM) behaviour has been achieved by using mononuclear lanthanoid analogues, also known as single-ion magnets (SIMs), which enormously simplifies the challenging issue of making SMM-MOFs. Here we present a rational design of a family of MOFs, [Ln(bipyNO)_4](TfO)_3·x solvent (Ln=Tb (1); Dy (2); Ho (3); Er (4); TfO=triflate), in which the lanthanoid centres have an square-antiprismatic coordination environment suitable for SIM behaviour. Magnetic measurements confirm the existence of slow magnetic relaxation typical of SMMs, which has been rationalised by means of a radial effective charge model. In addition, we have explored the incorporation of bulky polyoxometalates (POMs) into the cavities of the SIM-MOF by anion exchange, finding that they do not interfere with the slow magnetic relaxation. This demonstrates the robustness of the frameworks and opens the possibility of incorporating non-innocent anions.
机译：通过使用单核镧系元素类似物（也称为单离子磁体（SIM）），已经实现了具有有机分子骨架（MOF）的节点具有单分子磁体（SMM）行为的形成，这极大地简化了具有挑战性的问题制作SMM-MOF。在这里，我们提出MOF族的合理设计，[Ln（bipyNO）_4]（TfO）_3·x溶剂（Ln = Tb（1）; Dy（2）; Ho（3）; Er（4）; TfO = triflate），其中镧系中心具有适合SIM行为的方形反棱角协调环境。磁测量结果证实了SMM典型的慢磁弛豫的存在，已通过径向有效电荷模型对其进行了合理化。此外，我们还探讨了通过阴离子交换将大体积的多金属氧酸盐（POM）掺入SIM-MOF的腔体中的情况，发现它们不会干扰慢速磁弛豫。这证明了框架的鲁棒性，并为掺入非纯阴离子提供了可能性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号