Hydrogenation of C-60 in Peapods: Physical Chemistry in Nano Vessels

作者：Abou Hamad Edy; Kim Younghyun; Talyzin Alexandr V; Goze Bac Christophe^*; Luzzi David E; Rubio Angel; Wagberg Thomas

来源：Journal of Physical Chemistry C, 2009, 113(20): 8583-8587.

DOI：10.1021/jp8095743

Hydrogenation of C-60 molecules inside SWNT was achieved by direct reaction with hydrogen gas at elevated pressure and temperature. Evidence for the C-60 hydrogenation in peapods is provided by isotopic engineering with specific enrichment of encapsulated species and high resolution C-13 and H-1 NMR spectroscopy with the observation of characteristic diamagnetic and paramagnetic shifts of the NMR lines and the appearance of sp(3) carbon resonances. We estimate that approximately 78% of the C-60 molecules inside SWNTs are hydrogenated to an average degree of 14 hydrogen atoms per C-60 molecule. As a consequence, the rotational dynamics of the encapsulated C60Hx molecules is clearly hindered. Our successful hydrogenation experiments open completely new roads to understand and control confined chemical reactions at the nano scale.

• 出版日期2009-5-21