Studies on extracting solutions of endohedral rare-earth metallofullerenes by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

• Published in: Science China. Chemistry Vol. 40; no. 6; pp. 590 - 599
• Main Author: 孙大勇 刘志强 刘子阳 郭兴华 徐文国 刘淑莹
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer Nature B.V 01.12.1997
• Subjects: Desorption; desorption/ionization; Dysprosium; Erbium; fullerenes; Gadolinium; Ionization; laser; Lasers; mass; Mass spectrometry; Metallofullerenes; Neodymium; Rare earth elements; spectrometry; time-of-flight; Ytterbium
• ISSN: 1674-7291; 1006-9291; 1869-1870; 1862-2771
• DOI: 10.1007/BF02875477

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.