The structures of protonated and alkali metal cationized nucleobase self-assemblies and base pairs by infrared multiphoton dissociation spectroscopy and computational methods

Nucleobases are the bricks of nucleic acids such as deoxyribonucleic acid (DNA)/ribonucleic acid (RNA) molecules. In the current research, ionic nucleobase self-assemblies and base pairs were studied using gas-phase ion techniques in either a Fourier transform ion cyclotron resonance (FTICR) or ‘paul-type’ quadrupole ion-trap (QIT) mass spectrometers. Sustained off-resonance irradiation collision-induced dissociation (SORI-CID) and infrared multiphoton dissociation (IRMPD) were used to fragment the target ions. IRMPD spectroscopy was employed to collect spectra by using tunable...
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