| Abstract
| - The first successful production and chromatographic isolation of erbium endohedralmetallofullerenes are reported. A series of 21 different erbium endohedral metallofullerenes,having one, two, and three erbium metal atoms encapsulated in a range of higher fullerenecages, has been separated and isolated. All these newly synthesized metallofullerenes arecharacterized by LD-TOF mass spectrometry and UV−vis−NIR absorption spectroscopy.Their possible molecular symmetry, HOMO−LUMO band gap, and electronic structure arediscussed in terms of their absorption spectra and high-performance liquid chromatography(HPLC) elution time. Their separation and isolation procedure by multistage HPLC is alsodiscussed in detail.
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