Hydrogenation of C60 in Peapods: Physical Chemistry in Nano Vessels

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• 作者：Edy Abou-Hamad ; Younghyun Kim ; Alexandr V. Talyzin ; Christophe Goze-Bac ; David E. Luzzi ; Angel Rubio ; Thomas Wgberg
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：May 21, 2009
• 年：2009
• 卷：113
• 期：20
• 页码：8583-8587
• 全文大小：181K
• 年卷期：v.113,no.20(May 21, 2009)
• ISSN：1932-7455

文摘

Hydrogenation of C₆₀ molecules inside SWNT was achieved by direct reaction with hydrogen gas at elevated pressure and temperature. Evidence for the C₆₀ hydrogenation in peapods is provided by isotopic engineering with specific enrichment of encapsulated species and high resolution ¹³C and ¹H NMR spectroscopy with the observation of characteristic diamagnetic and paramagnetic shifts of the NMR lines and the appearance of sp³ carbon resonances. We estimate that approximately 78% of the C₆₀ molecules inside SWNTs are hydrogenated to an average degree of 14 hydrogen atoms per C₆₀ molecule. As a consequence, the rotational dynamics of the encapsulated C₆₀H_x molecules is clearly hindered. Our successful hydrogenation experiments open completely new roads to understand and control confined chemical reactions at the nano scale.