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Metastable Processes Investigated on an Orthogonal-Axis Time-of-Flight Instrument: Mass-Scale Calibration and Application

In this letter, the authors would like to present a rapid method for mass-scale calibration of metastable dissociation in an orthogonal-axis time-of-flight instrument. The calibrating ion is a protonated polyhedral oligomeric silsesquioxane (POSS) generated in electrospray ionization. In addition, dissociation mechanisms for protonated POSS are proposed. Finally, the interest of the method is illustrated in the context of a collision-induced dissociation investigation of a sodium-cationized polylactide.