Fullerene effects on the adsorption properties of silica gel with respect to low-density lipoproteides

The adsorption properties of silica gel with respect to lipoproteides and c hanges in these properties caused by silica gel interaction with fullerene C-60 were studied. (The content of fullerene in silica gel was varied in th e range 0.003-3 wt % by using C-60 + o-dichlorobenzene impregnating solutio ns of various concentrations, washing C-60 off by toluene, and high-tempera ture vacuum sublimation Of C-60.) Silica gel had a high adsorption capacity and selectivity with respect to low-density lipoproteides, which were virt ually independent of the concentration of C-60. The optical absorption spec tra of silica gel samples containing various amounts Of C-60 were measured in the visible region. The results were interpreted using the theory of spe cific adsorption "imprints.".