Abstract The work introduces facile synthetic route of conversion of Gd(III) complexes with hexanuclear cluster anions [{Re 6 Q 8 }(CN) 6 ] 4− (Q = S 2− , Se 2− or Te 2− ) into colloidal core-shell nanoparticles, where hard cores are the water insoluble Gd x [{Re 6 Q 8 }(CN) 6 ] y complexes, hydrophilic shells are built from (PEO) 100 -(PPO) 65 -(PEO) 100 (F-127). The comparative analysis of TEM and PXRD data for the dried colloids in correlation with the colloidal, luminescence and magnetic relaxation properties of the aqueous colloids indicates that the nature of the cluster anions [{Re 6 Q 8 }(CN) 6 ] 4− greatly affects the size and crystallinity of the hard cores, which in turn influences both magnetic relaxivity and luminescence of the corresponding aqueous colloids. The analysis of the results revealed hydrophilic colloids based on Gd x [{Re 6 S 8 }(CN) 6 ] y as the best ones from the viewpoint of the functional properties, which along with the low cytotoxicity makes them very promising basis for further application as contrast agents in both MRI and luminescent imaging.

中文翻译：

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基于异金属Gd-Re配合物的亲水性纳米材料发光和顺磁性能增强的结构优化

摘要 该工作介绍了将 Gd(III) 配合物与六核簇阴离子 [{Re 6 Q 8 }(CN) 6 ] 4− (Q = S 2− , Se 2− 或 Te 2− ) 转化为胶体的简便合成路线。核壳纳米粒子，其中硬核是不溶于水的 Gd x [{Re 6 Q 8 }(CN) 6 ] y 复合物，亲水壳由 (PEO) 100 -(PPO) 65 -(PEO) 100 (F -127）。干燥胶体的 TEM 和 PXRD 数据与水性胶体的胶体、发光和磁弛豫特性的对比分析表明簇阴离子 [{Re 6 Q 8 }(CN) 6 ] 4− 的性质大大影响硬核的尺寸和结晶度，进而影响相应水性胶体的磁弛豫和发光。