Designed magnetic multilayer thin films fabricated via the layer‐by‐layer assembly of polycyanofullerenes
Designed magnetic multilayer thin films fabricated via the layer‐by‐layer assembly of polycyanofullerenes
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DOI：
10.1002/app.40681
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发表时间：
2014-09
影响因子：
3
通讯作者：
Jingyang Luo;Yanhua Wang;R. Ren;Weilin Sun;Zhi-quan Shen
中科院分区：
文献类型：
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作者：
Jingyang Luo;Yanhua Wang;R. Ren;Weilin Sun;Zhi-quan Shen
采用逐层自组装技术制备了poly[4′-(4-methacryloyphenyl)-2，2′：6′，2″-terpyridine](PmPhtpy)、聚氰基富勒烯和过渡金属(Ni2+、Co2+)多层膜。采用自由基聚合法合成了PmPhtpy聚合物，并用傅立叶变换红外光谱(FTIR)和核磁共振氢谱对其进行了表征。以富勒烯为原料，用亲核试剂[氰化钾(KCN)]取代合成了聚氰基富勒烯，并用红外光谱、紫外-可见光谱和13C-核磁共振光谱对其进行了表征。用衰减全反射红外光谱和紫外-可见光谱对薄膜的光学性质进行了测试，结果表明，多层膜制备的驱动力是配位相互作用。研究了在5K下的磁场强度和温度(5-300K)对磁性行为的影响。在5K时，薄膜的磁滞回线呈现典型的S形状，这表明薄膜具有软铁磁性。©2014威利期刊股份有限公司J.应用。波兰姆。SCI。2014年，131,40681。
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 (Ni2+ and Co2+). 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 13C-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. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40681.