The outside knows the difference inside: trapping helium by immediate reduction of the orifice size of an open-cage fullerene and the effect of encapsulated helium and hydrogen upon the NMR of a proton directly attached to the outside.
A methodology to entrap He inside an open-cage fullerene by immediate reduction of the size of an orifice was developed, and the effects of encapsulated He and H(2) on the chemical shift of a proton directly attached to the outer fullerene sphere were revealed.
Chuang
Shih-Ching
SC
Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan.
Murata
Yasujiro
Y
Murata
Michihisa
M
Komatsu
Koichi
K