Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , China.
State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China.
ACS Appl Mater Interfaces. 2018 May 23;10(20):16947-16951. doi: 10.1021/acsami.8b05816. Epub 2018 May 10.
Although many high-nuclearity lanthanide-containing clusters with aesthetical topological nanoarchitectures and unique magnetic properties have been synthesized, there was a big time lag to develop functional soft materials and devices on the basis of these clusters, because of their stability and processability. Herein, we report a universal strategy to fabricate lanthanide cluster based magnetic soft materials under ambient conditions. The prototypical cluster [GdNi(IDA)(OH)(HO)] was encapsulated as an inorganic core by polymeric shells of sulfonate end functionalized poly(ethylene glycol) monoalkyl ethers through electrostatic interaction. The thickness of the shell was readily controlled by precisely tuning length of the polymer chain, leading to controllably reduced antiferromagnetic interactions between the clusters. The encapsulated hybrids can self-assemble to form vesicles in solution and can be used as an excellent agent for in vivo magnetic resonance imaging.
虽然已经合成了许多具有美学拓扑纳米结构和独特磁性的高核稀土金属簇合物，但由于其稳定性和可加工性，基于这些簇合物开发功能软材料和器件仍存在很大的时间滞后。在此，我们报告了一种在环境条件下制备基于镧系元素簇合物的磁性软材料的通用策略。通过静电相互作用，将原型簇合物[GdNi(IDA)(OH)(HO)]封装为磺酸盐端功能化聚(乙二醇)单烷基醚聚合物壳的无机核。通过精确调节聚合物链的长度，可以很容易地控制壳的厚度，从而控制簇之间的反铁磁相互作用。封装的混合物可以自组装在溶液中形成囊泡，并且可以用作体内磁共振成像的优异试剂。
