Abstract

European Journal of Mass Spectrometry
Volume 6 Issue 1, Pages 49–52 (2000)
doi: 10.1255/ejms.329

Letter: The use of 2-[(2E)-3-(4-tert-butylphenyl)-2- methylprop-2-enylidene]malononitrile as a matrix for matrix-assisted laser desorption/ionization mass spectrometry

Lars Ulmer and Jochen Mattay
Organische Chemie I, Fakultät für Chemie der Universität Bielefeld, Germany
H. Gregorio Torres- Garcia
University of Malaga, Spain (permanent address)
Heinrich Luftmann^*
Organisch-Chemisches Institut der Westfälischen Wilhelms-Universität Münster, Germany

2-[(2E)-3-(4-tert-butylphenyl)-2-methylprop-2-enylidene]malononitrile (DCTB, dicyano..tert-butyl ...) has proven to be an excellent nonprotic matrix for very labile compounds, especially for substituted fullerenes. This is mainly due to its extremely low onset of ion production. This matrix works mainly as an electron transfer agent, i.e. the ions produced are radical anions or cations, respectively. It works equally well to transfer evaporation energy to charged oligomers and with proton labile compounds (not shown here).

Keywords: MALDI, mass spectrometry, matrix; fullerenes, electron transfer, laser desorption

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