【摘 要】
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We report the mass spectrometric investigation on fullerene derivatives C60CH2, C60RH, C60R2(R= C6H5 CO-)and C60On under the 308nm laser ablation. In the negati
【机 构】
：
State Key Joint Laboratory for Materials Modification by Laser, Ion and Electron Beams, Department o
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We report the mass spectrometric investigation on fullerene derivatives C60CH2, C60RH, C60R2(R= C6H5 CO-)and C60On under the 308nm laser ablation. In the negative ion mass spectra of C60CH2 C60R2, and C60On,odd-numbered clusters C57-,C55-, C53-, C51- are observed clearly in addition to the even-numbered fullerene fragment ions, while for the monoadduct C60RH, odd-numbered species can not be detected. In the positive ion channel, the fragmentation pattes of the three derivatives are similar. A mechanism related to the structural characteristics of the derivatives is supposed for the odd-numbered duster formation. The 3-membered ring formed on the C60 cage is thought of to play a vital role for the formation of odd-numbered carbon clusters.
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