Magnetically Active and Coated Gadolinium-Filled Carbon Nanotubes

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• 作者：Elok Fidiani ; Pedro M. F. J. Costa ; Anja U. B. Wolter ; Diana Maier ; Bernd Buechner ; Silke Hampel
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：August 15, 2013
• 年：2013
• 卷：117
• 期：32
• 页码：16725-16733
• 全文大小：662K
• 年卷期：v.117,no.32(August 15, 2013)
• ISSN：1932-7455

文摘

Gd-filled carbon nanotubes (which include the so-called gadonanotubes1) have been attracting much interest due to their potential use in medical diagnostic applications. In the present work, a vacuum filling method was performed to confine gadolinium(III) iodide in carbon nanotubes (CNTs). Filling yields in excess of 50% were obtained. Cleaning and closing of the external walls was undertaken, as well as the study of the filled CNT magnetic properties. Overall, we found that the encapsulating procedure can lead to reduction of the lanthanide metal and induce disorder in the initial GdI₃-type structure. Notwithstanding, the magnetic response of the material is not compromised, retaining a strong paramagnetic response and an effective magnetic moment of 6 渭B. Our results may entice further investigation into whether an analogous Gd³⁺ to Gd²⁺ reduction takes place in other Gd-filled CNT systems.