PEGged as soluble: Potassium graphite (C8K) is functionalized to yield derivatives that are soluble in either water or organic solvents. For example, treatment of C8K with 5-bromovaleric acid followed by amine-terminated poly(ethylene glycol) leads to water-soluble nanoplatelets (see AFM image).
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Chakraborty et al. (2007) studied this question.
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