Supramolecular Chromatographic Separation of C60 and C70 Fullerenes: Flash Column Chromatography vs. High Pressure Liquid Chromatography |
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| Authors: | Subbareddy Mekapothula A D Dinga Wonanke Matthew A Addicoat David J Boocock John D Wallis Gareth W V Cave |
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| Affiliation: | 1.School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (S.M.); (A.D.D.W.); (M.A.A.); (J.D.W.);2.The John van Geest Cancer Research Centre, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; |
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| Abstract: | A silica-bound C-butylpyrogallol4]arene chromatographic stationary phase was prepared and characterised by thermogravimetric analysis, scanning electron microscopy, NMR and mass spectrometry. The chromatographic performance was investigated by using C60 and C70 fullerenes in reverse phase mode via flash column and high-pressure liquid chromatography (HPLC). The resulting new stationary phase was observed to demonstrate size-selective molecular recognition as postulated from our in-silico studies. The silica-bound C-butylpyrogallol4]arene flash and HPLC stationary phases were able to separate a C60- and C70-fullerene mixture more effectively than an RP-C18 stationary phase. The presence of toluene in the mobile phase plays a significant role in achieving symmetrical peaks in flash column chromatography. |
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| Keywords: | pyrogallol[4]arene flash column chromatography HPLC stationary phase fullerenes size-selective molecular recognition |
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