Water-Soluble Carbon 60

Water-soluble Carbon 60 refers to modified or aggregated forms of buckminsterfullerene that bypass its natural liposolubility, enabling use in aqueous environments. Common forms include fullerenols (polyhydroxylated) and PEGylated , which act as potent antioxidants with potential applications in drug delivery, nerve regeneration, and anti-cancer therapy. 

Key Aspects of Water-Soluble 

• Modification Types: Because pristine is insoluble in water, it is made water-soluble via surface modification, such as adding hydroxyl groups (Fullerenol), carboxylation, or creating inclusion complexes with cyclodextrins.
• Nanocrystal Formation:  can form stable water-based dispersions (nanocrystals) when processed using toluene and ultrasonication, or by using surfactants.
• Applications and Potential Benefits:

• Antioxidant Power: Known to be potent scavengers of free radicals, often touted as being significantly more effective than Vitamin C.

• Biomedical/Anti-cancer: Research indicates potential in inhibiting tumor growth, inducing apoptosis in cancer cells, and protecting healthy tissues (e.g., articular cartilage) from degradation.

• Neuroprotection: Water-soluble derivatives have been shown to promote neural stem cell proliferation and protect against oxidative damage.
• Anti-inflammatory: Studies indicate a reduction in cartilage degeneration in osteoarthritis and protection in inflammatory pain.
• Fullerenol/Polyhydroxylated C60:  with added hydroxyl groups.
• Functionalized C60: Pyrrolidine-modified, carboxylic acid-modified (e.g.,  malonic acid).
• Nano-C60: Stable clusters formed through solvent exchange. 

Disclaimer: While research suggests potential, many of these findings are based on animal or in vitro studies, and specialized forms of are primarily used in research contexts.