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Effect of temperature on the mechanism of retention of fullerenes in liquid chromatography using various alkyl bonded stationary phases |
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| Authors: | H. Ohta K. Jinno Y. Saito J. C. Fetzer W. R. Biggs J. J. Pesek M. T. Matyska Y. -L. Chen |
| Affiliation: | (1) School of Materials Science, Toyohashi University of Technology, 441 Toyohasi, Japan;(2) Cheyron Research & Technology Company, 94802 Richmond, CA, USA;(3) Department of Chemistry, San Jose State University, 95192 San Jose, CA, USA;(4) J&W Scientific, 95630-4714 Folsom, CA, USA |
| Abstract: | Summary The temperature-dependency of the separation of fullerenes in liquid chromatography (LC) has been examined using various alkyl bonded stationary phases. It has been found that a maximum retention temperature exists with long alkyl bonded stationary phases, whereas there is no similar effect with the newly synthesized alkyl bonded phases which have two phenyl groups at the base of the bonded phase. The interpretation of the retention behavior of fullerenes in the low temperature region on alkyl bonded stationary phases is discussed using information obtained by CP-MAS solid-state NMR spectroscopy and LC. |
| Keywords: | Column liquid chromatography Fullerences Alkyl bonded silica phases Retention vs. column temperature CP-MAS NMR |
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