Fulleren protonated, preparation

The first chemical transformations carried out with Cjq were reductions. After the pronounced electrophilicity of the fullerenes was recognized, electron transfer reactions with electropositive metals, organometallic compounds, strong organic donor molecules as well as electrochemical and photochemical reductions have been used to prepare fulleride salts respectively fulleride anions. Functionalized fulleride anions and salts have been mostly prepared by reactions with carbanions or by removing the proton from hydrofullerenes. Some of these systems, either functionalized or derived from pristine Cjq, exhibit extraordinary solid-state properties such as superconductivity and molecular ferromagnetism. Fullerides are promising candidates for nonlinear optical materials and may be used for enhanced photoluminescence material. 

A fullerene network of proton conductive materials, (II), was prepared by Nuber et al. (3) and used in fuel cell applications as illustrated in Eq. (1). 

Except for the fullerenes (see later), carbon atoms seldom coordinate a metal atom a well-characterized example of a naked carbon atom is a molybdenum carbide prepared, in a multistep procedure, by removing a terminal proton from a corresponding methylidyne species ... 

Photoinduced electron transfer-proton transfer reactions between the fullerene cage and polymeric secondary amine units serve as an efficient and selective buckyball fishing method for the preparation of pendant fullerene aminopolymers. As a novel approach to carry highly hydrophobic fullerene molecules into aqueous solution, pendant C6o-poly(propionylethyleneimine-co-ethyleneimine) polymer (17) has been prepared by the photochemical method [113,114]. The pendant polymer is highly water-soluble, with the equivalent aqueous solubility of the polymer-bound Cgo tmits (10-12 mg/mL) much higher... 

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