Matrix-assisted laser desorption FTMS of fullerene derivatives

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:61928

Yao, Jie; Castoro, J A; Wilkins, C L ^[1]; An, Yi-Zhoung; Rubin, Y ^[2]

---

1. Univ. of California, Riverside, CA (United States)
2. Univ. of California, Los Angeles, CA (United States)

Characterization of fullerene derivatives by mass spectroscopy methods can be frustrating because, very often, common methods such as fast atom bombardment (FAB) or direct infrared or ultraviolet laser desorption result in spectra dominated by a single peak with m/z 720, corresponding to C{sub 60} produced during the desorption/ionization process. Fortunately, it is possible to take advantage of the soft ionization characteristics of matrix-assisted laser desorption/ionization (MALDI) to circumvent this difficulty and obtain high quality spectra of intact fullerene derivatives. This paper will present the results of recent mass spectrometric studies of a series of fullerene derivatives by MALDI-Fourier transform mass spectrometry. Both positive and negative ion spectra with resolving power in excess of 10,000 are obtained with mass measurement accuracy in the low ppm range, sufficient to provide additional confirmation that the mass spectra of these derivatives are consistent with the expected empirical formulas.

• OSTI ID: 61928
• Report Number(s): CONF-9405234--
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
DESORPTION
DYNAMIC MASS SPECTROMETERS
FOURIER TRANSFORM SPECTROMETERS
FULLERENES
LASER RADIATION
MASS SPECTROSCOPY