Abstract
The first derivatives of diterbium fullerenes were successfully synthesized through the photochemical reaction of a large carbon cage-based diterbium fullerene Tb2C90 with 2-admantane-2,3-[3H]-diazirine. A monoadduct isomer, Tb2C90Ad (Ad = admantylidene), was isolated by multi-stage high-performance liquid chromatography with toluene as eluent. The formation of a series of derivatives of diterbium fullerenes as well as the success in the isolation of Tb2C90Ad was confirmed by high-performance liquid chromatography and matrix-assisted laser adsorption/ionization time-of-flight mass analyses. Vis-NIR absorption showed that the electronic property of Tb2C90 was largely pertained in the derivative, although a slight red-shift was observed for Tb2C90Ad. Cyclic voltammetric determination indicated that the redox potential of Tb2C90Ad was shifted cathodically in comparison with pristine Tb2C90 owing to the electron transfer from Ad to carbon cage.
Funding
This work is supported by the National Natural Science Foundation of China (Nos. 51072047 and 21271067).