Abstract
Methanol (CH3OH) and formaldehyde (H2CO) molecules were inserted into an open-cage C60 derivative with a large opening, under high-pressure and high-temperature conditions in solution.
Isolation of their molecular complexes in pure form was achieved by the use of recycling HPLC with Buckyprep columns.
1H NMR spectroscopy, single-crystal X-ray diffraction studies, and DFT calculations revealed the orientation of the encapsulated CH3OH and H2CO, both in solution and in the solid state, and the results show that the CH3 group of the CH3OH and the carbonyl group of the H2CO point to the bottom of the cages.
Furthermore, the dynamic behavior of the CH3OH and H2CO were studied at the molecular level.
COSMOSIL Buckyprep is a pyrenylpropyl group bonded silica based column specifically designed for fullerene separation. The unparalleled separation capabilities have enabled COSMOSIL Buckyprep to become the world benchmark of HPLC column for fullerene separation.
COSMOSIL Buckyprep retains fullerenes very strongly with a mobile phase of 100% toluene and exceeds the injection volume of a standard C18 column by a factor of 35.
Therefore, preparative-scale separation can be obtained with a 250 mm x 4.6 mm I.D. analytical column.