Just out of curiosity I added some C60 to
MCT Oil. Thanks for the idea Hebbeh.
Within an hour it was noticeably purple. I still don't quite understand how Moussa got olive oil to be purple unless the centrifuge process precipitates the particulates that make olive oil green/yellow.
The prolongation of the lifespan of rats by repeated oral administration of [60] fullerene
Tarek Baati a, b, Fanchon Bourasset c, Najla Gharbi d, Leila Njim b, Manef Abderrabba e, Abdelhamid Kerkeni b, Henri Szwarc d, Fathi Moussa d, *
The resulting C60-olive oil solution is purple and contains 0.80 +/- 0.02 mg/ml (n 6) as determined by HPLC [30] after appropriate dilution in the mobile phase. The chromatographic profile and the extracted spectra of these solutions are similar to those obtained with a control C60-toluene equimolar solution.
It is well known that C60 and derivatives are prone to aggregate even in their best solvents [37]. The C60-olive oil solution used in this study can be considered as free of C60 aggregates because: 1- its colour is purple that is characteristic of C60 solutions while the colour of C60 aggregate-containing solutions are rather brown, which is true even for water-soluble derivatives [3]; 2 - it is freely and instantaneously soluble in toluene in contrast to C60 aggregate- containing solutions, which slowly dissolve even in the best solvents of C60. Besides, the concentrations of C60 in olive oil as determined by HPLC agree with those previously published by other authors [22].
The second paragraph is what started to get me a little worried. I am pretty sure the reason my olive oil is brown is because of its original green color. If you mix purple and green you will get brown. My 1000g centrifuge does not change the color of the solution.
Edited by HappyPhysicist, 14 May 2012 - 07:39 PM.