Abstract: Laser desorption/ionization time of flight mass spectrometry was used to characterize three fullerene derivatives, i.e., 1, 2-dimethylbenzene C₆₀, 1,4-Dibenzyl-2,3-Benzamidine C₆₀ and 2,3-Benzamidine C₆₀. The structure of 1, 2-adducts and two novel products with addition at [5, 6] sites of C60 prepared from electrocatalytic reduction reactions was confirmed. Results of nuclear magnetic resonance further affirmed the structure of derivatives. The additive peaks of fullerene and their derivatives with oxygen were found. Laser desorption-ionization time of flight mass spectrometry provides a powerful technique for the characterization of new structural fullerene derivatives.

Key words: fullerene derivatives; laser desorption-ionization time of flight mass spectrometry (LDI-TOF-MS); structural characterization

Author: JI Yiping, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

E-mail: jiping@ciac.jl.cn

Analysis and Testing Technology and Instruments, Vol. 16, No. 1, 2010, 36-41.