| Studies on extracting solutions of endohedral rare-earth metallofullerenes by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry |
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| 作者姓名： | 孙大勇 刘志强 刘子阳 郭兴华 徐文国 刘淑莹 |
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| 作者单位： | The Key Laboratory of Applied Spectroscopy，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China，The Key Laboratory of Applied Spectroscopy，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China，The Key Laboratory of Applied Spectroscopy，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China，The Key Laboratory of Applied Spectroscopy，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China，The Key Laboratory of Applied Spectroscopy，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China，The Key Laboratory of Applied Spectroscopy，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China |
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| 摘 要： | Thirteen extracting solutions of rare-earth metallofullerenes containing La,Ce,Pr,Nd Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm and Yb respectively have been investigated by means of matrix-assisted laser desorpuon/ ionization time-of-flight mass spectrometry.The influences of the positive-ion/negative-ion mode,laser intensity,ma trix and mass discrimination to the analytical results are studied,based on which the optimal analytical conditions have been determined.The results show that the extracting solutions contain large quantities of rare-earth metallofullerenes besides empty fullerenes.On the basis of comparing their relative intensities,the different structure stabilities and solubilities of metallofullerenes with different rare-earth metals encapsulated into the fullerene cages,as well as some possible reasons to those differences,are discussed.
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| 收稿时间： | 20 March 1997 |
Studies on extracting solutions of endohedral rare-earth metallofullerenes by matrix-assisted laser desorption/ ionization time-of-flight mass spectrometry |
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| Dayong Sun,Zhiqiang Liu,Ziyang Liu,Xinghua Guo,Wenguo Xu,Shuying Liu.Studies on extracting solutions of endohedral rare-earth metallofullerenes by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry[J].Science in China(Chemistry),1997,40(6):590-599. |
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| Authors: | Dayong Sun Zhiqiang Liu Ziyang Liu Xinghua Guo Wenguo Xu Shuying Liu |
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| Institution: | (1) The Key Laboratory of Applied Spectroscopy, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China |
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| Abstract: | Thirteen extracting solutions of rare-earth metallofullerenes containing La,Ce,Pr,Nd Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm and Yb respectively have been investigated by means of matrix-assisted laser desorpuon/ ionization time-of-flight mass spectrometry.The influences of the positive-ion/negative-ion mode,laser intensity,ma trix and mass discrimination to the analytical results are studied,based on which the optimal analytical conditions have been determined.The results show that the extracting solutions contain large quantities of rare-earth metallofullerenes besides empty fullerenes.On the basis of comparing their relative intensities,the different structure stabilities and solubilities of metallofullerenes with different rare-earth metals encapsulated into the fullerene cages,as well as some possible reasons to those differences,are discussed. |
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| Keywords: | metallofullerenes fullerenes laser desorption/ionization time-of-flight mass spectrometry |
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