NMR study of solid C60(γ-cyclodextrin)2

✍ Scribed by Wen-Yi Tseng; Yu-Huei Chen; Ilias I. Khairullin; Soofin Cheng; Lian-Pin Hwang

• Book ID: 104357855
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 1018 KB
• Volume: 8
• Category: Article
• ISSN: 0926-2040
• DOI: 10.1016/s0926-2040(97)00013-1

✦ Synopsis

A solid complex of C, with y-cyclodextrin (y-CyD) was examined with NMR spectroscopic methods in order to understand the dynamics of C,, and the interaction between C, and 'y_CyD. A 13C solid-state cross-polarization magic angle spinning (CP/MAS) NMR spectra shows C, resonance at 142.6 ppm. This provides the evidence of interaction between 13C spins in C,, and 'H spins in the 'y-CyD host. Ambient temperature experiments on the 13C CP/MAS NMR, with varying contact time, shows that the water associated with y_CyDs plays an important role in the nuclear relaxation processes. The dynamics of C, in +ZyD was investigated using temperature and field-dependent 13C spin-lattice relaxation time measurements. The influence of water on the dynamics of C, was less significant below 250 K. 0 1997 Elsevier Science B.V.