Formation of Singly Bonded Fullerene Dimers in Electrospray Mass Spectrometry
2014). Formation of Singly Bonded Fullerene Dimers in Electrospray Mass Spectrometry. The Journal of Physical Chemistry C 2014, 118 (51), 30253–30259. Peer reviewed.; ; ; ; (
The K+ adducts of the crown ether–fullerene conjugate of the form (12cr4 – H)–C60–H are investigated by electrospray mass spectrometry (ESI-MS), focusing on the dimeric species produced from two different solvent mixtures. A singly bonded fullerene dimer of the type (12cr4 – H)–C60–C60–(12cr4 – H)K+ is generated in aprotic solvents, while in protic solvents, a metal-bridged, noncovalently bound dimer predominates. The dimerization reaction is proposed to occur during the ESI process via the radical intermediate (12cr4 – H)–C60•. The fragmentation behavior of the different dimers is studied by collision-induced dissociation (CID), showing characteristic product ions for each species.