Fig. 6: IM–MS studies on gas-phase polymers and isomers of clusters.

a Schematic of a high-resolution mass spectrometer showing the formation of dimers and trimers of clusters in the trap and their subsequent separation in the IM chamber. Isotope patterns of the monomer, dimer, and trimer of Au₂₅(PET)₁₈ cluster are also shown⁷⁸. (Copyright^© 2016 The Royal Society of Chemistry) b (i) IM–MS on Ag₄₄(FTP)₃₀⁴⁻ showing the separation of four isomers in the gas phase, (ii) corresponding drift time vs m/z plot showing four spots for the four isomers, and (iii) ESI MS extracted from the four peaks in the mobilograms. The peaks show similar isotopic distribution, confirming the isomeric nature⁸¹. (Copyright^© 2017 American Chemical Society)