Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India.
Langmuir. 2013 Feb 19;29(7):2159-65. doi: 10.1021/la3036506. Epub 2013 Feb 4.
We formed magnetic moment assisted layer-by-layer (LbL) films of a Prussian Blue analogue (PB). We applied an external magnetic field to each monolayer of PB to orient the magnetic moment of the compound perpendicular to the substrate. Aligned moments or orientation of the magnetic compounds themselves were immobilized in each monolayer, so that the moments could augment formation of the subsequent monolayers of LbL adsorption process. We hence could form multilayered LbL films of PB molecules with their magnetic moments oriented perpendicular to the substrate. We also formed LbL films of the compound with their moments oriented parallel to the substrate and facing one particular direction. We have measured conductivity and dielectric constant of the two types of films and compared the parameters with that of conventional LbL films deposited without orienting magnetic moments of the molecules.
我们制备了具有磁矩辅助的普鲁士蓝类似物（PB）逐层（LbL）薄膜。我们对 PB 的每一层施加外部磁场，以使化合物的磁矩垂直于基底取向。各层中被固定的磁矩或磁化合物本身的取向，使得这些磁矩能够增强随后 LbL 吸附过程中各层的形成。因此，我们可以用垂直于基底取向的磁矩形成 PB 分子的多层 LbL 薄膜。我们还形成了具有平行于基底取向且面向特定方向的磁矩的 LbL 薄膜。我们已经测量了这两种类型的薄膜的电导率和介电常数，并将这些参数与没有定向分子磁矩的常规 LbL 薄膜的参数进行了比较。
