Collision cross sections of large positive fullerene molecular ions and their use as ion mobility calibrants in trapped ion mobility mass spectrometry.

ABSTRACT: Positive-ion laser desorption/ionization (LDI) of fullerenes contained in soot as produced by the Krätschmer-Huffman process delivers a wide range of fullerene molecular ions from C₅₆^+• to above C₃₀₀^+•. Here, the collision cross section (CCS) values of those fullerene molecular ions are determined using a trapped ion mobility-quadrupole-time-of-flight (TIMS-Q-TOF) instrument. While CCS values in the range from C₆₀^+• to C₉₆^+• are already known with high accuracy, those of ions from C₉₈^+• onward had yet to be determined. The fullerene molecular ions covered in this work have CCS values from about 200 to 440 Å². The fullerene molecular ion series is evenly spaced at C₂

SUBMITTER: Oppenlander T 

PROVIDER: S-EPMC11541393 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature