Formation of polynuclear copper complexes of guanine-based nucleobases in the gas phase studied by ESI-MS

- We demonstrate production of polynuclear copper complexes in ESI sprayed solutions.
- Complexes are observed in ESI of H2O/CH3OH solutions of deoxyguanosine and CuSO4.
- High resolution MS, MS2, ion mobility experiments yield chemical and structural information.
- Complexes contain up to 4 Cu(II) ions and up to 3 sulphate anion acting as bridging agents.