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首页> 外文期刊>Journal of Applied Polymer Science >Designed Magnetic Multilayer Thin Films Fabricated via the Layer-by-Layer Assembly of Polycyanofullerenes
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Designed Magnetic Multilayer Thin Films Fabricated via the Layer-by-Layer Assembly of Polycyanofullerenes

机译：通过多层氰基富勒烯层组装制备的设计磁性多层薄膜

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摘要

The layer-by-layer self-assembly technique was used to fabricate a series of multilayer thin films with poly[4'-(4-methacryloyphenyl)-2,2':6',2''-terpyridine] (PmPhtpy), polycyanofullerenes, and transition metals (Ni~(2+) and Co~(2+)). The polymer PmPhtpy was prepared by free-radical polymerization, and this was confirmed by Fourier transform infrared (FTIR) and ~1H-NMR spectroscopy. The polycyanofullerenes, which were characterized by FTIR, ultraviolet–visible (UV–vis), and ~(13)C-NMR spectroscopy, was synthesized via the bromination of fullerene and then substitution with a nucleophilic reagent [potassium cyanide (KCN)]. The optical properties of the films were measured by attenuated total reflection infrared and UV–vis spectroscopy, and the results indicate that the driving force of the fabrication of the multilayer film was the coordination interaction. The magnetic behavior was examined as a function of the magnetic field strength at 5 K and the temperature (5–300 K). The magnetic hysteresis loops of the films showed a typical S shape at 5 K; this suggested soft ferromagnetic properties.
机译：层层自组装技术用于制造一系列具有聚[4'-（4-甲基丙烯酰基苯基）-2,2'：6'，2''-吡啶基]（PmPhtpy）的多层薄膜，聚氰基富勒烯和过渡金属（Ni〜（2+）和Co〜（2+））。通过自由基聚合制备聚合物PmPhtpy，并通过傅立叶变换红外（FTIR）和〜1H-NMR光谱证实了这一点。聚氰基富勒烯的特征是FTIR，紫外可见（UV-vis）和〜（13）C-NMR光谱，是通过富勒烯的溴化反应，然后用亲核试剂[氰化钾（KCN）]取代而合成的。通过衰减全反射红外和紫外可见光谱法测量了薄膜的光学性能，结果表明，多层薄膜的制造驱动力是配位相互作用。根据5 K和温度（5–300 K）下的磁场强度，检查了磁性行为。薄膜的磁滞回线在5 K时显示出典型的S形。这表明软铁磁特性。

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