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Application of electrospray ionization to the observation of higher fullerene anions
Author(s) -
Fujimaki Susumu,
Kudaka Ichiro,
Sato Tetsuya,
Hiraoka Kenzo,
Shinohara Hisanori,
Saito Yahachi,
Nojima Kazutetsu
Publication year - 1993
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290071204
Subject(s) - chemistry , fullerene , electrospray ionization , electrospray , mass spectrometry , ion , fullerene chemistry , ionization , analytical chemistry (journal) , extractive electrospray ionization , dimethoxyethane , chromatography , organic chemistry , sample preparation in mass spectrometry , electrode , electrolyte
Negative‐ion electrospray mass spectrcmetry for the detection of higher fullerene anions is discussed. The fullerenes were reduced in dimethoxyethane/aromatic solvent using NaK amalgam and analyzed by electrospray ionization mass spectrometry using a double‐focusing mass spectrometer. All the C n −ions ( n = 2 k , and k is an integer) could be detected up to n = 102 except for 60 < n < 70 and n = 72. The detection efficiency of C 76 is found to be considerably lower than that for C 78 , probably because the C 76 −ion reacts further in solution and is converted to undetectable reaction products. In addition to the fullerene anions, large peaks due to methoxy‐substituted fullerene anions, C n (OCH 3 ) m − , are observed. The intensities of these ions grow with time.