Hydrogenation of C-60 in Peapods: Physical Chemistry in Nano Vessels Auteur(s): Abou-Hamad Edy, Kim Younghyun, Talyzin Alexandr V., Goze-Bac C., Luzzi David E., Rubio Angel, Wagberg Thomas (Article) Publié: The Journal Of Physical Chemistry C, vol. 113 p.8583-8587 (2009) Ref HAL: hal-00503218_v1 DOI: 10.1021/jp8095743 WoS: 000266093800009 Exporter : BibTex | endNote 26 Citations Résumé: 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. |